diff --git a/dist/otpauth.esm.js b/dist/otpauth.esm.js
index 436d20e..5afc512 100644
--- a/dist/otpauth.esm.js
+++ b/dist/otpauth.esm.js
@@ -756,6 +756,7 @@ const globalScope = (() => {
     });
     try {
       // @ts-ignore
+      // eslint-disable-next-line no-undef
       if (typeof __GLOBALTHIS__ !== "undefined") return __GLOBALTHIS__;
     } finally {
       // @ts-ignore
@@ -1253,7 +1254,7 @@ class HOTP {
     // Return early if the token length does not match the digit number.
     if (token.length !== digits) return null;
     let delta = null;
-    for (let i = counter - window; i <= counter + window; ++i) {
+    const check = ( /** @type {number} */i) => {
       const generatedToken = HOTP.generate({
         secret,
         algorithm,
@@ -1263,6 +1264,13 @@ class HOTP {
       if (timingSafeEqual(token, generatedToken)) {
         delta = i - counter;
       }
+    };
+    check(counter);
+    for (let i = 1; i <= window && delta === null; ++i) {
+      check(counter - i);
+      if (delta !== null) break;
+      check(counter + i);
+      if (delta !== null) break;
     }
     return delta;
   }
@@ -1538,7 +1546,8 @@ class URI {
     let uriGroups;
     try {
       uriGroups = uri.match(OTPURI_REGEX);
-    } catch (error) {
+      // eslint-disable-next-line no-unused-vars
+    } catch (_) {
       /* Handled below */
     }
     if (!Array.isArray(uriGroups)) {
@@ -1649,6 +1658,6 @@ class URI {
  * Library version.
  * @type {string}
  */
-const version = "9.2.3";
+const version = "9.2.4";
 
 export { HOTP, Secret, TOTP, URI, version };
diff --git a/dist/otpauth.esm.min.js b/dist/otpauth.esm.min.js
index 6f98408..9831e6c 100644
--- a/dist/otpauth.esm.min.js
+++ b/dist/otpauth.esm.min.js
@@ -1,3 +1,3 @@
 /// <reference types="./otpauth.d.ts" />
-const Ie=r=>{const e=new ArrayBuffer(8),n=new Uint8Array(e);let t=r;for(let i=7;i>=0&&t!==0;i--)n[i]=t&255,t-=n[i],t/=256;return e},ht=void 0,at=void 0,ct=void 0;var q=Object.freeze({__proto__:null,createHmac:void 0,randomBytes:void 0,timingSafeEqual:void 0});const J="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",Q="ARRAYBUFFER not supported by this environment",W="UINT8ARRAY not supported by this environment";function _(r,e,n,t){let i,s,u;const c=e||[0],a=(n=n||0)>>>3,l=t===-1?3:0;for(i=0;i<r.length;i+=1)u=i+a,s=u>>>2,c.length<=s&&c.push(0),c[s]|=r[i]<<8*(l+t*(u%4));return{value:c,binLen:8*r.length+n}}function B(r,e,n){switch(e){case"UTF8":case"UTF16BE":case"UTF16LE":break;default:throw new Error("encoding must be UTF8, UTF16BE, or UTF16LE")}switch(r){case"HEX":return function(t,i,s){return function(u,c,a,l){let d,h,f,g;if(u.length%2!=0)throw new Error("String of HEX type must be in byte increments");const p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(d=0;d<u.length;d+=2){if(h=parseInt(u.substr(d,2),16),isNaN(h))throw new Error("String of HEX type contains invalid characters");for(g=(d>>>1)+m,f=g>>>2;p.length<=f;)p.push(0);p[f]|=h<<8*(A+l*(g%4))}return{value:p,binLen:4*u.length+a}}(t,i,s,n)};case"TEXT":return function(t,i,s){return function(u,c,a,l,d){let h,f,g,p,m,A,y,b,v=0;const H=a||[0],S=(l=l||0)>>>3;if(c==="UTF8")for(y=d===-1?3:0,g=0;g<u.length;g+=1)for(h=u.charCodeAt(g),f=[],128>h?f.push(h):2048>h?(f.push(192|h>>>6),f.push(128|63&h)):55296>h||57344<=h?f.push(224|h>>>12,128|h>>>6&63,128|63&h):(g+=1,h=65536+((1023&h)<<10|1023&u.charCodeAt(g)),f.push(240|h>>>18,128|h>>>12&63,128|h>>>6&63,128|63&h)),p=0;p<f.length;p+=1){for(A=v+S,m=A>>>2;H.length<=m;)H.push(0);H[m]|=f[p]<<8*(y+d*(A%4)),v+=1}else for(y=d===-1?2:0,b=c==="UTF16LE"&&d!==1||c!=="UTF16LE"&&d===1,g=0;g<u.length;g+=1){for(h=u.charCodeAt(g),b===!0&&(p=255&h,h=p<<8|h>>>8),A=v+S,m=A>>>2;H.length<=m;)H.push(0);H[m]|=h<<8*(y+d*(A%4)),v+=2}return{value:H,binLen:8*v+l}}(t,e,i,s,n)};case"B64":return function(t,i,s){return function(u,c,a,l){let d,h,f,g,p,m,A,y=0;const b=c||[0],v=(a=a||0)>>>3,H=l===-1?3:0,S=u.indexOf("=");if(u.search(/^[a-zA-Z0-9=+/]+$/)===-1)throw new Error("Invalid character in base-64 string");if(u=u.replace(/=/g,""),S!==-1&&S<u.length)throw new Error("Invalid '=' found in base-64 string");for(h=0;h<u.length;h+=4){for(p=u.substr(h,4),g=0,f=0;f<p.length;f+=1)d=J.indexOf(p.charAt(f)),g|=d<<18-6*f;for(f=0;f<p.length-1;f+=1){for(A=y+v,m=A>>>2;b.length<=m;)b.push(0);b[m]|=(g>>>16-8*f&255)<<8*(H+l*(A%4)),y+=1}}return{value:b,binLen:8*y+a}}(t,i,s,n)};case"BYTES":return function(t,i,s){return function(u,c,a,l){let d,h,f,g;const p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(h=0;h<u.length;h+=1)d=u.charCodeAt(h),g=h+m,f=g>>>2,p.length<=f&&p.push(0),p[f]|=d<<8*(A+l*(g%4));return{value:p,binLen:8*u.length+a}}(t,i,s,n)};case"ARRAYBUFFER":try{new ArrayBuffer(0)}catch(t){throw new Error(Q)}return function(t,i,s){return function(u,c,a,l){return _(new Uint8Array(u),c,a,l)}(t,i,s,n)};case"UINT8ARRAY":try{new Uint8Array(0)}catch(t){throw new Error(W)}return function(t,i,s){return _(t,i,s,n)};default:throw new Error("format must be HEX, TEXT, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY")}}function ee(r,e,n,t){switch(r){case"HEX":return function(i){return function(s,u,c,a){const l="0123456789abcdef";let d,h,f="";const g=u/8,p=c===-1?3:0;for(d=0;d<g;d+=1)h=s[d>>>2]>>>8*(p+c*(d%4)),f+=l.charAt(h>>>4&15)+l.charAt(15&h);return a.outputUpper?f.toUpperCase():f}(i,e,n,t)};case"B64":return function(i){return function(s,u,c,a){let l,d,h,f,g,p="";const m=u/8,A=c===-1?3:0;for(l=0;l<m;l+=3)for(f=l+1<m?s[l+1>>>2]:0,g=l+2<m?s[l+2>>>2]:0,h=(s[l>>>2]>>>8*(A+c*(l%4))&255)<<16|(f>>>8*(A+c*((l+1)%4))&255)<<8|g>>>8*(A+c*((l+2)%4))&255,d=0;d<4;d+=1)p+=8*l+6*d<=u?J.charAt(h>>>6*(3-d)&63):a.b64Pad;return p}(i,e,n,t)};case"BYTES":return function(i){return function(s,u,c){let a,l,d="";const h=u/8,f=c===-1?3:0;for(a=0;a<h;a+=1)l=s[a>>>2]>>>8*(f+c*(a%4))&255,d+=String.fromCharCode(l);return d}(i,e,n)};case"ARRAYBUFFER":try{new ArrayBuffer(0)}catch(i){throw new Error(Q)}return function(i){return function(s,u,c){let a;const l=u/8,d=new ArrayBuffer(l),h=new Uint8Array(d),f=c===-1?3:0;for(a=0;a<l;a+=1)h[a]=s[a>>>2]>>>8*(f+c*(a%4))&255;return d}(i,e,n)};case"UINT8ARRAY":try{new Uint8Array(0)}catch(i){throw new Error(W)}return function(i){return function(s,u,c){let a;const l=u/8,d=c===-1?3:0,h=new Uint8Array(l);for(a=0;a<l;a+=1)h[a]=s[a>>>2]>>>8*(d+c*(a%4))&255;return h}(i,e,n)};default:throw new Error("format must be HEX, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY")}}const k=4294967296,w=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298],C=[3238371032,914150663,812702999,4144912697,4290775857,1750603025,1694076839,3204075428],$=[1779033703,3144134277,1013904242,2773480762,1359893119,2600822924,528734635,1541459225],P="Chosen SHA variant is not supported",te="Cannot set numRounds with MAC";function z(r,e){let n,t;const i=r.binLen>>>3,s=e.binLen>>>3,u=i<<3,c=4-i<<3;if(i%4!=0){for(n=0;n<s;n+=4)t=i+n>>>2,r.value[t]|=e.value[n>>>2]<<u,r.value.push(0),r.value[t+1]|=e.value[n>>>2]>>>c;return(r.value.length<<2)-4>=s+i&&r.value.pop(),{value:r.value,binLen:r.binLen+e.binLen}}return{value:r.value.concat(e.value),binLen:r.binLen+e.binLen}}function ne(r){const e={outputUpper:!1,b64Pad:"=",outputLen:-1},n=r||{},t="Output length must be a multiple of 8";if(e.outputUpper=n.outputUpper||!1,n.b64Pad&&(e.b64Pad=n.b64Pad),n.outputLen){if(n.outputLen%8!=0)throw new Error(t);e.outputLen=n.outputLen}else if(n.shakeLen){if(n.shakeLen%8!=0)throw new Error(t);e.outputLen=n.shakeLen}if(typeof e.outputUpper!="boolean")throw new Error("Invalid outputUpper formatting option");if(typeof e.b64Pad!="string")throw new Error("Invalid b64Pad formatting option");return e}function K(r,e,n,t){const i=r+" must include a value and format";if(!e){if(!t)throw new Error(i);return t}if(e.value===void 0||!e.format)throw new 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c(this.g(u));for(i=this.F(this.h.slice(),this.u,this.A,this.L(this.U),s),t=1;t<this.numRounds;t+=1)this.K&&s%32!=0&&(i[i.length-1]&=16777215>>>24-s%32),i=this.F(i,s,0,this.B(this.o),s);return c(i)}setHMACKey(e,n,t){if(!this.M)throw new Error("Variant does not support HMAC");if(this.l)throw new Error("Cannot set MAC key after calling update");const i=B(n,(t||{}).encoding||"UTF8",this.T);this.k(i(e))}k(e){const n=this.m>>>3,t=n/4-1;let i;if(this.numRounds!==1)throw new Error(te);if(this.H)throw new Error("MAC key already set");for(n<e.binLen/8&&(e.value=this.F(e.value,e.binLen,0,this.B(this.o),this.R));e.value.length<=t;)e.value.push(0);for(i=0;i<=t;i+=1)this.S[i]=909522486^e.value[i],this.p[i]=1549556828^e.value[i];this.U=this.v(this.S,this.U),this.A=this.m,this.H=!0}getHMAC(e,n){const t=ne(n);return ee(e,this.R,this.T,t)(this.Y())}Y(){let e;if(!this.H)throw new Error("Cannot call getHMAC without first setting MAC key");const n=this.F(this.h.slice(),this.u,this.A,this.L(this.U),this.R);return e=this.v(this.p,this.B(this.o)),e=this.F(n,this.R,this.m,e,this.R),e}}function F(r,e){return r<<e|r>>>32-e}function L(r,e){return r>>>e|r<<32-e}function re(r,e){return r>>>e}function ie(r,e,n){return r^e^n}function se(r,e,n){return r&e^~r&n}function oe(r,e,n){return r&e^r&n^e&n}function ye(r){return L(r,2)^L(r,13)^L(r,22)}function I(r,e){const n=(65535&r)+(65535&e);return(65535&(r>>>16)+(e>>>16)+(n>>>16))<<16|65535&n}function He(r,e,n,t){const i=(65535&r)+(65535&e)+(65535&n)+(65535&t);return(65535&(r>>>16)+(e>>>16)+(n>>>16)+(t>>>16)+(i>>>16))<<16|65535&i}function O(r,e,n,t,i){const s=(65535&r)+(65535&e)+(65535&n)+(65535&t)+(65535&i);return(65535&(r>>>16)+(e>>>16)+(n>>>16)+(t>>>16)+(i>>>16)+(s>>>16))<<16|65535&s}function Ee(r){return L(r,7)^L(r,18)^re(r,3)}function Ne(r){return L(r,6)^L(r,11)^L(r,25)}function ve(r){return[1732584193,4023233417,2562383102,271733878,3285377520]}function ue(r,e){let n,t,i,s,u,c,a;const l=[];for(n=e[0],t=e[1],i=e[2],s=e[3],u=e[4],a=0;a<80;a+=1)l[a]=a<16?r[a]:F(l[a-3]^l[a-8]^l[a-14]^l[a-16],1),c=a<20?O(F(n,5),se(t,i,s),u,1518500249,l[a]):a<40?O(F(n,5),ie(t,i,s),u,1859775393,l[a]):a<60?O(F(n,5),oe(t,i,s),u,2400959708,l[a]):O(F(n,5),ie(t,i,s),u,3395469782,l[a]),u=s,s=i,i=F(t,30),t=n,n=c;return e[0]=I(n,e[0]),e[1]=I(t,e[1]),e[2]=I(i,e[2]),e[3]=I(s,e[3]),e[4]=I(u,e[4]),e}function Se(r,e,n,t){let i;const s=15+(e+65>>>9<<4),u=e+n;for(;r.length<=s;)r.push(0);for(r[e>>>5]|=128<<24-e%32,r[s]=4294967295&u,r[s-1]=u/k|0,i=0;i<r.length;i+=16)t=ue(r.slice(i,i+16),t);return t}let Ue=class extends j{constructor(r,e,n){if(r!=="SHA-1")throw new Error(P);super(r,e,n);const t=n||{};this.M=!0,this.g=this.Y,this.T=-1,this.C=B(this.t,this.i,this.T),this.v=ue,this.L=function(i){return i.slice()},this.B=ve,this.F=Se,this.U=[1732584193,4023233417,2562383102,271733878,3285377520],this.m=512,this.R=160,this.K=!1,t.hmacKey&&this.k(K("hmacKey",t.hmacKey,this.T))}};function he(r){let e;return 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fromHex(e){return new T({buffer:Ge(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:Je(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:We(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:qe(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:Ze(this.buffer)}),this.hex}}const et=(r,e)=>{q!=null;{if(r.length!==e.length)throw new TypeError("Input strings must have the same length");let n=-1,t=0;for(;++n<r.length;)t|=r.charCodeAt(n)^e.charCodeAt(n);return t===0}};var tt=Math.pow;let x=class E{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=E.defaults.issuer,label:n=E.defaults.label,issuerInLabel:t=E.defaults.issuerInLabel,secret:i=new T,algorithm:s=E.defaults.algorithm,digits:u=E.defaults.digits,counter:c=E.defaults.counter}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.counter=c}static generate({secret:e,algorithm:n=E.defaults.algorithm,digits:t=E.defaults.digits,counter:i=E.defaults.counter}){const s=new Uint8Array(je(n,e.buffer,Ie(i))),u=s[s.byteLength-1]&15;return(((s[u]&127)<<24|(s[u+1]&255)<<16|(s[u+2]&255)<<8|s[u+3]&255)%tt(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return E.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:n,algorithm:t,digits:i,counter:s=E.defaults.counter,window:u=E.defaults.window}){if(e.length!==i)return null;let c=null;for(let a=s-u;a<=s+u;++a){const l=E.generate({secret:n,algorithm:t,digits:i,counter:a});et(e,l)&&(c=a-s)}return c}validate({token:e,counter:n=this.counter,window:t}){return E.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class N{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=N.defaults.issuer,label:n=N.defaults.label,issuerInLabel:t=N.defaults.issuerInLabel,secret:i=new T,algorithm:s=N.defaults.algorithm,digits:u=N.defaults.digits,period:c=N.defaults.period}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.period=c}static generate({secret:e,algorithm:n,digits:t,period:i=N.defaults.period,timestamp:s=Date.now()}){return x.generate({secret:e,algorithm:n,digits:t,counter:Math.floor(s/1e3/i)})}generate({timestamp:e=Date.now()}={}){return N.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:n,algorithm:t,digits:i,period:s=N.defaults.period,timestamp:u=Date.now(),window:c}){return x.validate({token:e,secret:n,algorithm:t,digits:i,counter:Math.floor(u/1e3/s),window:c})}validate({token:e,timestamp:n,window:t}){return N.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const nt=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,rt=/^[2-7A-Z]+=*$/i,it=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,st=/^[+-]?\d+$/,Ae=/^\+?[1-9]\d*$/;class ot{static parse(e){let n;try{n=e.match(nt)}catch(a){}if(!Array.isArray(n))throw new URIError("Invalid URI format");const t=n[1].toLowerCase(),i=n[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),s=n[3].split("&").reduce((a,l)=>{const d=l.split(/=(.*)/,2).map(decodeURIComponent),h=d[0].toLowerCase(),f=d[1],g=a;return g[h]=f,g},{});let u;const c={};if(t==="hotp")if(u=x,typeof s.counter!="undefined"&&st.test(s.counter))c.counter=parseInt(s.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(u=N,typeof s.period!="undefined")if(Ae.test(s.period))c.period=parseInt(s.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof s.issuer!="undefined"&&(c.issuer=s.issuer),i.length===2?(c.label=i[1],typeof c.issuer=="undefined"||c.issuer===""?c.issuer=i[0]:i[0]===""&&(c.issuerInLabel=!1)):(c.label=i[0],typeof c.issuer!="undefined"&&c.issuer!==""&&(c.issuerInLabel=!1)),typeof s.secret!="undefined"&&rt.test(s.secret))c.secret=s.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof s.algorithm!="undefined")if(it.test(s.algorithm))c.algorithm=s.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof s.digits!="undefined")if(Ae.test(s.digits))c.digits=parseInt(s.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new u(c)}static stringify(e){if(e instanceof x||e instanceof N)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const ut="9.2.3";export{x as HOTP,T as Secret,N as TOTP,ot as URI,ut as version};
+const Ie=r=>{const e=new ArrayBuffer(8),n=new Uint8Array(e);let t=r;for(let i=7;i>=0&&t!==0;i--)n[i]=t&255,t-=n[i],t/=256;return e},ht=void 0,at=void 0,ct=void 0;var q=Object.freeze({__proto__:null,createHmac:void 0,randomBytes:void 0,timingSafeEqual:void 0});const J="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",Q="ARRAYBUFFER not supported by this environment",W="UINT8ARRAY not supported by this environment";function _(r,e,n,t){let i,s,u;const c=e||[0],a=(n=n||0)>>>3,l=t===-1?3:0;for(i=0;i<r.length;i+=1)u=i+a,s=u>>>2,c.length<=s&&c.push(0),c[s]|=r[i]<<8*(l+t*(u%4));return{value:c,binLen:8*r.length+n}}function B(r,e,n){switch(e){case"UTF8":case"UTF16BE":case"UTF16LE":break;default:throw new Error("encoding must be UTF8, UTF16BE, or UTF16LE")}switch(r){case"HEX":return function(t,i,s){return function(u,c,a,l){let d,h,f,g;if(u.length%2!=0)throw new Error("String of HEX type must be in byte increments");const p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(d=0;d<u.length;d+=2){if(h=parseInt(u.substr(d,2),16),isNaN(h))throw new Error("String of HEX type contains invalid characters");for(g=(d>>>1)+m,f=g>>>2;p.length<=f;)p.push(0);p[f]|=h<<8*(A+l*(g%4))}return{value:p,binLen:4*u.length+a}}(t,i,s,n)};case"TEXT":return function(t,i,s){return function(u,c,a,l,d){let h,f,g,p,m,A,y,b,v=0;const H=a||[0],S=(l=l||0)>>>3;if(c==="UTF8")for(y=d===-1?3:0,g=0;g<u.length;g+=1)for(h=u.charCodeAt(g),f=[],128>h?f.push(h):2048>h?(f.push(192|h>>>6),f.push(128|63&h)):55296>h||57344<=h?f.push(224|h>>>12,128|h>>>6&63,128|63&h):(g+=1,h=65536+((1023&h)<<10|1023&u.charCodeAt(g)),f.push(240|h>>>18,128|h>>>12&63,128|h>>>6&63,128|63&h)),p=0;p<f.length;p+=1){for(A=v+S,m=A>>>2;H.length<=m;)H.push(0);H[m]|=f[p]<<8*(y+d*(A%4)),v+=1}else 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p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(h=0;h<u.length;h+=1)d=u.charCodeAt(h),g=h+m,f=g>>>2,p.length<=f&&p.push(0),p[f]|=d<<8*(A+l*(g%4));return{value:p,binLen:8*u.length+a}}(t,i,s,n)};case"ARRAYBUFFER":try{new ArrayBuffer(0)}catch(t){throw new Error(Q)}return function(t,i,s){return function(u,c,a,l){return _(new Uint8Array(u),c,a,l)}(t,i,s,n)};case"UINT8ARRAY":try{new Uint8Array(0)}catch(t){throw new Error(W)}return function(t,i,s){return _(t,i,s,n)};default:throw new Error("format must be HEX, TEXT, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY")}}function ee(r,e,n,t){switch(r){case"HEX":return function(i){return function(s,u,c,a){const l="0123456789abcdef";let d,h,f="";const g=u/8,p=c===-1?3:0;for(d=0;d<g;d+=1)h=s[d>>>2]>>>8*(p+c*(d%4)),f+=l.charAt(h>>>4&15)+l.charAt(15&h);return a.outputUpper?f.toUpperCase():f}(i,e,n,t)};case"B64":return function(i){return function(s,u,c,a){let l,d,h,f,g,p="";const m=u/8,A=c===-1?3:0;for(l=0;l<m;l+=3)for(f=l+1<m?s[l+1>>>2]:0,g=l+2<m?s[l+2>>>2]:0,h=(s[l>>>2]>>>8*(A+c*(l%4))&255)<<16|(f>>>8*(A+c*((l+1)%4))&255)<<8|g>>>8*(A+c*((l+2)%4))&255,d=0;d<4;d+=1)p+=8*l+6*d<=u?J.charAt(h>>>6*(3-d)&63):a.b64Pad;return p}(i,e,n,t)};case"BYTES":return function(i){return function(s,u,c){let a,l,d="";const h=u/8,f=c===-1?3:0;for(a=0;a<h;a+=1)l=s[a>>>2]>>>8*(f+c*(a%4))&255,d+=String.fromCharCode(l);return d}(i,e,n)};case"ARRAYBUFFER":try{new ArrayBuffer(0)}catch(i){throw new Error(Q)}return function(i){return function(s,u,c){let a;const l=u/8,d=new ArrayBuffer(l),h=new Uint8Array(d),f=c===-1?3:0;for(a=0;a<l;a+=1)h[a]=s[a>>>2]>>>8*(f+c*(a%4))&255;return d}(i,e,n)};case"UINT8ARRAY":try{new Uint8Array(0)}catch(i){throw new Error(W)}return function(i){return function(s,u,c){let a;const l=u/8,d=c===-1?3:0,h=new Uint8Array(l);for(a=0;a<l;a+=1)h[a]=s[a>>>2]>>>8*(d+c*(a%4))&255;return h}(i,e,n)};default:throw new Error("format must be HEX, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY")}}const k=4294967296,w=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298],C=[3238371032,914150663,812702999,4144912697,4290775857,1750603025,1694076839,3204075428],$=[1779033703,3144134277,1013904242,2773480762,1359893119,2600822924,528734635,1541459225],P="Chosen SHA variant is not supported",te="Cannot set numRounds with MAC";function z(r,e){let n,t;const i=r.binLen>>>3,s=e.binLen>>>3,u=i<<3,c=4-i<<3;if(i%4!=0){for(n=0;n<s;n+=4)t=i+n>>>2,r.value[t]|=e.value[n>>>2]<<u,r.value.push(0),r.value[t+1]|=e.value[n>>>2]>>>c;return(r.value.length<<2)-4>=s+i&&r.value.pop(),{value:r.value,binLen:r.binLen+e.binLen}}return{value:r.value.concat(e.value),binLen:r.binLen+e.binLen}}function ne(r){const e={outputUpper:!1,b64Pad:"=",outputLen:-1},n=r||{},t="Output length must be a multiple of 8";if(e.outputUpper=n.outputUpper||!1,n.b64Pad&&(e.b64Pad=n.b64Pad),n.outputLen){if(n.outputLen%8!=0)throw new Error(t);e.outputLen=n.outputLen}else if(n.shakeLen){if(n.shakeLen%8!=0)throw new Error(t);e.outputLen=n.shakeLen}if(typeof e.outputUpper!="boolean")throw new Error("Invalid outputUpper formatting option");if(typeof e.b64Pad!="string")throw new Error("Invalid b64Pad formatting option");return e}function K(r,e,n,t){const i=r+" must include a value and format";if(!e){if(!t)throw new Error(i);return t}if(e.value===void 0||!e.format)throw new 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c(this.g(u));for(i=this.F(this.h.slice(),this.u,this.A,this.L(this.U),s),t=1;t<this.numRounds;t+=1)this.K&&s%32!=0&&(i[i.length-1]&=16777215>>>24-s%32),i=this.F(i,s,0,this.B(this.o),s);return c(i)}setHMACKey(e,n,t){if(!this.M)throw new Error("Variant does not support HMAC");if(this.l)throw new Error("Cannot set MAC key after calling update");const i=B(n,(t||{}).encoding||"UTF8",this.T);this.k(i(e))}k(e){const n=this.m>>>3,t=n/4-1;let i;if(this.numRounds!==1)throw new Error(te);if(this.H)throw new Error("MAC key already set");for(n<e.binLen/8&&(e.value=this.F(e.value,e.binLen,0,this.B(this.o),this.R));e.value.length<=t;)e.value.push(0);for(i=0;i<=t;i+=1)this.S[i]=909522486^e.value[i],this.p[i]=1549556828^e.value[i];this.U=this.v(this.S,this.U),this.A=this.m,this.H=!0}getHMAC(e,n){const t=ne(n);return ee(e,this.R,this.T,t)(this.Y())}Y(){let e;if(!this.H)throw new Error("Cannot call getHMAC without first setting MAC key");const 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i=t||{};return{kmacKey:K("kmacKey",i.kmacKey,1),funcName:{value:[1128353099],binLen:32},customization:K("Customization",i.customization,1,{value:[],binLen:0})}}(r||{});this.O(r,e.funcName);const n=ge(Z(e.kmacKey),this.m>>>3);for(let t=0;t<n.length;t+=this.m>>>5)this.U=this.v(n.slice(t,t+(this.m>>>5)),this.U),this.A+=this.m;this.H=!0}_(r){const e=z({value:this.h.slice(),binLen:this.u},function(n){let t,i,s=0;const u=[0,0],c=[4294967295&n,n/k&2097151];for(t=6;t>=0;t--)i=c[t>>2]>>>8*t&255,i===0&&s===0||(u[s>>2]|=i<<8*s,s+=1);return s=s!==0?s:1,u[s>>2]|=s<<8*s,{value:s+1>4?u:[u[0]],binLen:8+8*s}}(r.outputLen));return this.F(e.value,e.binLen,this.A,this.L(this.U),r.outputLen)}};class Xe{constructor(e,n,t){if(e=="SHA-1")this.P=new Ue(e,n,t);else if(e=="SHA-224"||e=="SHA-256")this.P=new Le(e,n,t);else if(e=="SHA-384"||e=="SHA-512")this.P=new ke(e,n,t);else{if(e!="SHA3-224"&&e!="SHA3-256"&&e!="SHA3-384"&&e!="SHA3-512"&&e!="SHAKE128"&&e!="SHAKE256"&&e!="CSHAKE128"&&e!="CSHAKE256"&&e!="KMAC128"&&e!="KMAC256")throw new Error(P);this.P=new xe(e,n,t)}}update(e){return this.P.update(e),this}getHash(e,n){return this.P.getHash(e,n)}setHMACKey(e,n,t){this.P.setHMACKey(e,n,t)}getHMAC(e,n){return this.P.getHMAC(e,n)}}const M=(()=>{if(typeof globalThis=="object")return globalThis;Object.defineProperty(Object.prototype,"__GLOBALTHIS__",{get(){return this},configurable:!0});try{if(typeof __GLOBALTHIS__!="undefined")return __GLOBALTHIS__}finally{delete Object.prototype.__GLOBALTHIS__}if(typeof self!="undefined")return self;if(typeof window!="undefined")return window;if(typeof global!="undefined")return global})(),ze={SHA1:"SHA-1",SHA224:"SHA-224",SHA256:"SHA-256",SHA384:"SHA-384",SHA512:"SHA-512","SHA3-224":"SHA3-224","SHA3-256":"SHA3-256","SHA3-384":"SHA3-384","SHA3-512":"SHA3-512"},je=(r,e,n)=>{q!=null;{const t=ze[r.toUpperCase()];if(typeof t=="undefined")throw new TypeError("Unknown hash function");const i=new Xe(t,"ARRAYBUFFER");return i.setHMACKey(e,"ARRAYBUFFER"),i.update(n),i.getHMAC("ARRAYBUFFER")}},V="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",De=r=>{let e=r.length;for(;r[e-1]==="=";)--e;const n=(e<r.length?r.substring(0,e):r).toUpperCase(),t=new ArrayBuffer(n.length*5/8|0),i=new Uint8Array(t);let s=0,u=0,c=0;for(let a=0;a<n.length;a++){const l=V.indexOf(n[a]);if(l===-1)throw new TypeError(`Invalid character found: ${n[a]}`);u=u<<5|l,s+=5,s>=8&&(s-=8,i[c++]=u>>>s)}return t},qe=r=>{const e=new Uint8Array(r);let n=0,t=0,i="";for(let s=0;s<e.length;s++)for(t=t<<8|e[s],n+=8;n>=5;)i+=V[t>>>n-5&31],n-=5;return n>0&&(i+=V[t<<5-n&31]),i},Ge=r=>{const e=new ArrayBuffer(r.length/2),n=new Uint8Array(e);for(let t=0;t<r.length;t+=2)n[t/2]=parseInt(r.substring(t,t+2),16);return e},Ze=r=>{const e=new Uint8Array(r);let n="";for(let t=0;t<e.length;t++){const i=e[t].toString(16);i.length===1&&(n+="0"),n+=i}return n.toUpperCase()},Ve=r=>{const e=new ArrayBuffer(r.length),n=new Uint8Array(e);for(let t=0;t<r.length;t++)n[t]=r.charCodeAt(t)&255;return e},Je=r=>{const e=new Uint8Array(r);let n="";for(let t=0;t<e.length;t++)n+=String.fromCharCode(e[t]);return n},pe=M.TextEncoder?new M.TextEncoder("utf-8"):null,me=M.TextDecoder?new M.TextDecoder("utf-8"):null,Qe=r=>{if(!pe)throw new Error("Encoding API not available");return pe.encode(r).buffer},We=r=>{if(!me)throw new Error("Encoding API not available");return me.decode(r)},_e=r=>{var e;if(q!=null,!((e=M.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return M.crypto.getRandomValues(new Uint8Array(r)).buffer};class T{constructor({buffer:e,size:n=20}={}){this.buffer=typeof e=="undefined"?_e(n):e}static fromLatin1(e){return new T({buffer:Ve(e)})}static fromUTF8(e){return new T({buffer:Qe(e)})}static fromBase32(e){return new T({buffer:De(e)})}static fromHex(e){return new T({buffer:Ge(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:Je(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:We(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:qe(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:Ze(this.buffer)}),this.hex}}const et=(r,e)=>{q!=null;{if(r.length!==e.length)throw new TypeError("Input strings must have the same length");let n=-1,t=0;for(;++n<r.length;)t|=r.charCodeAt(n)^e.charCodeAt(n);return t===0}};var tt=Math.pow;let x=class E{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=E.defaults.issuer,label:n=E.defaults.label,issuerInLabel:t=E.defaults.issuerInLabel,secret:i=new T,algorithm:s=E.defaults.algorithm,digits:u=E.defaults.digits,counter:c=E.defaults.counter}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.counter=c}static generate({secret:e,algorithm:n=E.defaults.algorithm,digits:t=E.defaults.digits,counter:i=E.defaults.counter}){const s=new Uint8Array(je(n,e.buffer,Ie(i))),u=s[s.byteLength-1]&15;return(((s[u]&127)<<24|(s[u+1]&255)<<16|(s[u+2]&255)<<8|s[u+3]&255)%tt(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return E.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:n,algorithm:t,digits:i,counter:s=E.defaults.counter,window:u=E.defaults.window}){if(e.length!==i)return null;let c=null;const a=l=>{const d=E.generate({secret:n,algorithm:t,digits:i,counter:l});et(e,d)&&(c=l-s)};a(s);for(let l=1;l<=u&&c===null&&(a(s-l),!(c!==null||(a(s+l),c!==null)));++l);return c}validate({token:e,counter:n=this.counter,window:t}){return E.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class N{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=N.defaults.issuer,label:n=N.defaults.label,issuerInLabel:t=N.defaults.issuerInLabel,secret:i=new T,algorithm:s=N.defaults.algorithm,digits:u=N.defaults.digits,period:c=N.defaults.period}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.period=c}static generate({secret:e,algorithm:n,digits:t,period:i=N.defaults.period,timestamp:s=Date.now()}){return x.generate({secret:e,algorithm:n,digits:t,counter:Math.floor(s/1e3/i)})}generate({timestamp:e=Date.now()}={}){return N.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:n,algorithm:t,digits:i,period:s=N.defaults.period,timestamp:u=Date.now(),window:c}){return x.validate({token:e,secret:n,algorithm:t,digits:i,counter:Math.floor(u/1e3/s),window:c})}validate({token:e,timestamp:n,window:t}){return N.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const nt=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,rt=/^[2-7A-Z]+=*$/i,it=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,st=/^[+-]?\d+$/,Ae=/^\+?[1-9]\d*$/;class ot{static parse(e){let n;try{n=e.match(nt)}catch(a){}if(!Array.isArray(n))throw new URIError("Invalid URI format");const t=n[1].toLowerCase(),i=n[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),s=n[3].split("&").reduce((a,l)=>{const d=l.split(/=(.*)/,2).map(decodeURIComponent),h=d[0].toLowerCase(),f=d[1],g=a;return g[h]=f,g},{});let u;const c={};if(t==="hotp")if(u=x,typeof s.counter!="undefined"&&st.test(s.counter))c.counter=parseInt(s.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(u=N,typeof s.period!="undefined")if(Ae.test(s.period))c.period=parseInt(s.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof s.issuer!="undefined"&&(c.issuer=s.issuer),i.length===2?(c.label=i[1],typeof c.issuer=="undefined"||c.issuer===""?c.issuer=i[0]:i[0]===""&&(c.issuerInLabel=!1)):(c.label=i[0],typeof c.issuer!="undefined"&&c.issuer!==""&&(c.issuerInLabel=!1)),typeof s.secret!="undefined"&&rt.test(s.secret))c.secret=s.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof s.algorithm!="undefined")if(it.test(s.algorithm))c.algorithm=s.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof s.digits!="undefined")if(Ae.test(s.digits))c.digits=parseInt(s.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new u(c)}static stringify(e){if(e instanceof x||e instanceof N)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const ut="9.2.4";export{x as HOTP,T as Secret,N as TOTP,ot as URI,ut as version};
 //# sourceMappingURL=otpauth.esm.min.js.map
diff --git a/dist/otpauth.esm.min.js.map b/dist/otpauth.esm.min.js.map
index 9a5ae1d..dc4a783 100644
--- a/dist/otpauth.esm.min.js.map
+++ b/dist/otpauth.esm.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"otpauth.esm.min.js","sources":["../src/utils/encoding/uint.js","../node_modules/jssha/dist/sha.mjs","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * A JavaScript implementation of the SHA family of hashes - defined in FIPS PUB 180-4, FIPS PUB 202,\n * and SP 800-185 - as well as the corresponding HMAC implementation as defined in FIPS PUB 198-1.\n *\n * Copyright 2008-2023 Brian Turek, 1998-2009 Paul Johnston & Contributors\n * Distributed under the BSD License\n * See http://caligatio.github.com/jsSHA/ for more information\n */\nconst t=\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\",n=\"ARRAYBUFFER not supported by this environment\",e=\"UINT8ARRAY not supported by this environment\";function r(t,n,e,r){let i,s,o;const h=n||[0],u=(e=e||0)>>>3,w=-1===r?3:0;for(i=0;i<t.length;i+=1)o=i+u,s=o>>>2,h.length<=s&&h.push(0),h[s]|=t[i]<<8*(w+r*(o%4));return{value:h,binLen:8*t.length+e}}function i(i,s,o){switch(s){case\"UTF8\":case\"UTF16BE\":case\"UTF16LE\":break;default:throw new Error(\"encoding must be UTF8, UTF16BE, or UTF16LE\")}switch(i){case\"HEX\":return function(t,n,e){return function(t,n,e,r){let i,s,o,h;if(0!=t.length%2)throw new Error(\"String of HEX type must be in byte increments\");const u=n||[0],w=(e=e||0)>>>3,c=-1===r?3:0;for(i=0;i<t.length;i+=2){if(s=parseInt(t.substr(i,2),16),isNaN(s))throw new Error(\"String of HEX type contains invalid characters\");for(h=(i>>>1)+w,o=h>>>2;u.length<=o;)u.push(0);u[o]|=s<<8*(c+r*(h%4))}return{value:u,binLen:4*t.length+e}}(t,n,e,o)};case\"TEXT\":return function(t,n,e){return function(t,n,e,r,i){let s,o,h,u,w,c,f,a,l=0;const A=e||[0],E=(r=r||0)>>>3;if(\"UTF8\"===n)for(f=-1===i?3:0,h=0;h<t.length;h+=1)for(s=t.charCodeAt(h),o=[],128>s?o.push(s):2048>s?(o.push(192|s>>>6),o.push(128|63&s)):55296>s||57344<=s?o.push(224|s>>>12,128|s>>>6&63,128|63&s):(h+=1,s=65536+((1023&s)<<10|1023&t.charCodeAt(h)),o.push(240|s>>>18,128|s>>>12&63,128|s>>>6&63,128|63&s)),u=0;u<o.length;u+=1){for(c=l+E,w=c>>>2;A.length<=w;)A.push(0);A[w]|=o[u]<<8*(f+i*(c%4)),l+=1}else for(f=-1===i?2:0,a=\"UTF16LE\"===n&&1!==i||\"UTF16LE\"!==n&&1===i,h=0;h<t.length;h+=1){for(s=t.charCodeAt(h),!0===a&&(u=255&s,s=u<<8|s>>>8),c=l+E,w=c>>>2;A.length<=w;)A.push(0);A[w]|=s<<8*(f+i*(c%4)),l+=2}return{value:A,binLen:8*l+r}}(t,s,n,e,o)};case\"B64\":return function(n,e,r){return function(n,e,r,i){let s,o,h,u,w,c,f,a=0;const l=e||[0],A=(r=r||0)>>>3,E=-1===i?3:0,H=n.indexOf(\"=\");if(-1===n.search(/^[a-zA-Z0-9=+/]+$/))throw new Error(\"Invalid character in base-64 string\");if(n=n.replace(/=/g,\"\"),-1!==H&&H<n.length)throw new Error(\"Invalid '=' found in base-64 string\");for(o=0;o<n.length;o+=4){for(w=n.substr(o,4),u=0,h=0;h<w.length;h+=1)s=t.indexOf(w.charAt(h)),u|=s<<18-6*h;for(h=0;h<w.length-1;h+=1){for(f=a+A,c=f>>>2;l.length<=c;)l.push(0);l[c]|=(u>>>16-8*h&255)<<8*(E+i*(f%4)),a+=1}}return{value:l,binLen:8*a+r}}(n,e,r,o)};case\"BYTES\":return function(t,n,e){return function(t,n,e,r){let i,s,o,h;const u=n||[0],w=(e=e||0)>>>3,c=-1===r?3:0;for(s=0;s<t.length;s+=1)i=t.charCodeAt(s),h=s+w,o=h>>>2,u.length<=o&&u.push(0),u[o]|=i<<8*(c+r*(h%4));return{value:u,binLen:8*t.length+e}}(t,n,e,o)};case\"ARRAYBUFFER\":try{new ArrayBuffer(0)}catch(t){throw new Error(n)}return function(t,n,e){return function(t,n,e,i){return r(new Uint8Array(t),n,e,i)}(t,n,e,o)};case\"UINT8ARRAY\":try{new Uint8Array(0)}catch(t){throw new Error(e)}return function(t,n,e){return r(t,n,e,o)};default:throw new Error(\"format must be HEX, TEXT, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY\")}}function s(r,i,s,o){switch(r){case\"HEX\":return function(t){return function(t,n,e,r){const i=\"0123456789abcdef\";let s,o,h=\"\";const u=n/8,w=-1===e?3:0;for(s=0;s<u;s+=1)o=t[s>>>2]>>>8*(w+e*(s%4)),h+=i.charAt(o>>>4&15)+i.charAt(15&o);return r.outputUpper?h.toUpperCase():h}(t,i,s,o)};case\"B64\":return function(n){return function(n,e,r,i){let s,o,h,u,w,c=\"\";const f=e/8,a=-1===r?3:0;for(s=0;s<f;s+=3)for(u=s+1<f?n[s+1>>>2]:0,w=s+2<f?n[s+2>>>2]:0,h=(n[s>>>2]>>>8*(a+r*(s%4))&255)<<16|(u>>>8*(a+r*((s+1)%4))&255)<<8|w>>>8*(a+r*((s+2)%4))&255,o=0;o<4;o+=1)c+=8*s+6*o<=e?t.charAt(h>>>6*(3-o)&63):i.b64Pad;return c}(n,i,s,o)};case\"BYTES\":return function(t){return function(t,n,e){let r,i,s=\"\";const o=n/8,h=-1===e?3:0;for(r=0;r<o;r+=1)i=t[r>>>2]>>>8*(h+e*(r%4))&255,s+=String.fromCharCode(i);return s}(t,i,s)};case\"ARRAYBUFFER\":try{new ArrayBuffer(0)}catch(t){throw new Error(n)}return function(t){return function(t,n,e){let r;const i=n/8,s=new ArrayBuffer(i),o=new Uint8Array(s),h=-1===e?3:0;for(r=0;r<i;r+=1)o[r]=t[r>>>2]>>>8*(h+e*(r%4))&255;return s}(t,i,s)};case\"UINT8ARRAY\":try{new Uint8Array(0)}catch(t){throw new Error(e)}return function(t){return function(t,n,e){let r;const i=n/8,s=-1===e?3:0,o=new Uint8Array(i);for(r=0;r<i;r+=1)o[r]=t[r>>>2]>>>8*(s+e*(r%4))&255;return o}(t,i,s)};default:throw new Error(\"format must be HEX, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY\")}}const 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i=t.binLen>>>3,s=n.binLen>>>3,o=i<<3,h=4-i<<3;if(i%4!=0){for(e=0;e<s;e+=4)r=i+e>>>2,t.value[r]|=n.value[e>>>2]<<o,t.value.push(0),t.value[r+1]|=n.value[e>>>2]>>>h;return(t.value.length<<2)-4>=s+i&&t.value.pop(),{value:t.value,binLen:t.binLen+n.binLen}}return{value:t.value.concat(n.value),binLen:t.binLen+n.binLen}}function l(t){const n={outputUpper:!1,b64Pad:\"=\",outputLen:-1},e=t||{},r=\"Output length must be a multiple of 8\";if(n.outputUpper=e.outputUpper||!1,e.b64Pad&&(n.b64Pad=e.b64Pad),e.outputLen){if(e.outputLen%8!=0)throw new Error(r);n.outputLen=e.outputLen}else if(e.shakeLen){if(e.shakeLen%8!=0)throw new Error(r);n.outputLen=e.shakeLen}if(\"boolean\"!=typeof n.outputUpper)throw new Error(\"Invalid outputUpper formatting option\");if(\"string\"!=typeof n.b64Pad)throw new Error(\"Invalid b64Pad formatting option\");return n}function A(t,n,e,r){const s=t+\" must include a value and format\";if(!n){if(!r)throw new Error(s);return r}if(void 0===n.value||!n.format)throw new 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set numRounds for CSHAKE variants\")}switch(this.T=1,this.C=i(this.t,this.i,this.T),this.v=et,this.L=nt,this.B=tt,this.U=tt(),this.K=!1,t){case\"SHA3-224\":this.m=s=1152,this.R=224,this.M=!0,this.g=this.Y;break;case\"SHA3-256\":this.m=s=1088,this.R=256,this.M=!0,this.g=this.Y;break;case\"SHA3-384\":this.m=s=832,this.R=384,this.M=!0,this.g=this.Y;break;case\"SHA3-512\":this.m=s=576,this.R=512,this.M=!0,this.g=this.Y;break;case\"SHAKE128\":r=31,this.m=s=1344,this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"SHAKE256\":r=31,this.m=s=1088,this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"KMAC128\":r=4,this.m=s=1344,this.X(e),this.R=-1,this.K=!0,this.M=!1,this.g=this._;break;case\"KMAC256\":r=4,this.m=s=1088,this.X(e),this.R=-1,this.K=!0,this.M=!1,this.g=this._;break;case\"CSHAKE128\":this.m=s=1344,r=this.O(e),this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"CSHAKE256\":this.m=s=1088,r=this.O(e),this.R=-1,this.K=!0,this.M=!1,this.g=null;break;default:throw new Error(c)}this.F=function(t,n,e,i,o){return function(t,n,e,r,i,s,o){let h,u,w=0;const c=[],f=i>>>5,a=n>>>5;for(h=0;h<a&&n>=i;h+=f)r=et(t.slice(h,h+f),r),n-=i;for(t=t.slice(h),n%=i;t.length<f;)t.push(0);for(h=n>>>3,t[h>>2]^=s<<h%4*8,t[f-1]^=2147483648,r=et(t,r);32*c.length<o&&(u=r[w%5][w/5|0],c.push(u.I),!(32*c.length>=o));)c.push(u.N),w+=1,0==64*w%i&&(et(null,r),w=0);return c}(t,n,0,i,s,r,o)},o.hmacKey&&this.k(A(\"hmacKey\",o.hmacKey,this.T))}O(t,n){const e=function(t){const n=t||{};return{funcName:A(\"funcName\",n.funcName,1,{value:[],binLen:0}),customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});n&&(e.funcName=n);const r=a(it(e.funcName),it(e.customization));if(0!==e.customization.binLen||0!==e.funcName.binLen){const t=st(r,this.m>>>3);for(let n=0;n<t.length;n+=this.m>>>5)this.U=this.v(t.slice(n,n+(this.m>>>5)),this.U),this.A+=this.m;return 4}return 31}X(t){const n=function(t){const n=t||{};return{kmacKey:A(\"kmacKey\",n.kmacKey,1),funcName:{value:[1128353099],binLen:32},customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});this.O(t,n.funcName);const e=st(it(n.kmacKey),this.m>>>3);for(let t=0;t<e.length;t+=this.m>>>5)this.U=this.v(e.slice(t,t+(this.m>>>5)),this.U),this.A+=this.m;this.H=!0}_(t){const n=a({value:this.h.slice(),binLen:this.u},function(t){let n,e,r=0;const i=[0,0],s=[4294967295&t,t/o&2097151];for(n=6;n>=0;n--)e=s[n>>2]>>>8*n&255,0===e&&0===r||(i[r>>2]|=e<<8*r,r+=1);return r=0!==r?r:1,i[r>>2]|=r<<8*r,{value:r+1>4?i:[i[0]],binLen:8+8*r}}(t.outputLen));return this.F(n.value,n.binLen,this.A,this.L(this.U),t.outputLen)}};class ht{constructor(t,n,e){if(\"SHA-1\"==t)this.P=new L(t,n,e);else if(\"SHA-224\"==t||\"SHA-256\"==t)this.P=new k(t,n,e);else if(\"SHA-384\"==t||\"SHA-512\"==t)this.P=new Q(t,n,e);else{if(\"SHA3-224\"!=t&&\"SHA3-256\"!=t&&\"SHA3-384\"!=t&&\"SHA3-512\"!=t&&\"SHAKE128\"!=t&&\"SHAKE256\"!=t&&\"CSHAKE128\"!=t&&\"CSHAKE256\"!=t&&\"KMAC128\"!=t&&\"KMAC256\"!=t)throw new Error(c);this.P=new ot(t,n,e)}}update(t){return this.P.update(t),this}getHash(t,n){return this.P.getHash(t,n)}setHMACKey(t,n,e){this.P.setHMACKey(t,n,e)}getHMAC(t,n){return this.P.getHMAC(t,n)}}export{ht as default};\n//# sourceMappingURL=sha.mjs.map\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    for (let i = counter - window; i <= counter + window; ++i) {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n    } catch (error) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== \"undefined\") {\n      if (POSITIVE_INTEGER_REGEX.test(uriParams.digits)) {\n        config.digits = parseInt(uriParams.digits, 10);\n      } else {\n        throw new TypeError(\"Invalid 'digits' parameter\");\n      }\n    }\n\n    return new OTP(config);\n  }\n\n  /**\n   * Converts an HOTP/TOTP object to a Google Authenticator key URI.\n   * @param {HOTP|TOTP} otp HOTP/TOTP object.\n   * @returns {string} Google Authenticator Key URI.\n   */\n  static stringify(otp) {\n    if (otp instanceof HOTP || otp instanceof TOTP) {\n      return otp.toString();\n    }\n\n    throw new TypeError(\"Invalid 'HOTP/TOTP' object\");\n  }\n}\n\nexport { URI };\n","/**\n * Library version.\n * @type {string}\n */\nconst version = \"__OTPAUTH_VERSION__\";\n\nexport { version 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Error(c)}this.F=function(t,n,e,i,o){return function(t,n,e,r,i,s,o){let h,u,w=0;const c=[],f=i>>>5,a=n>>>5;for(h=0;h<a&&n>=i;h+=f)r=et(t.slice(h,h+f),r),n-=i;for(t=t.slice(h),n%=i;t.length<f;)t.push(0);for(h=n>>>3,t[h>>2]^=s<<h%4*8,t[f-1]^=2147483648,r=et(t,r);32*c.length<o&&(u=r[w%5][w/5|0],c.push(u.I),!(32*c.length>=o));)c.push(u.N),w+=1,0==64*w%i&&(et(null,r),w=0);return c}(t,n,0,i,s,r,o)},o.hmacKey&&this.k(A(\"hmacKey\",o.hmacKey,this.T))}O(t,n){const e=function(t){const n=t||{};return{funcName:A(\"funcName\",n.funcName,1,{value:[],binLen:0}),customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});n&&(e.funcName=n);const r=a(it(e.funcName),it(e.customization));if(0!==e.customization.binLen||0!==e.funcName.binLen){const t=st(r,this.m>>>3);for(let n=0;n<t.length;n+=this.m>>>5)this.U=this.v(t.slice(n,n+(this.m>>>5)),this.U),this.A+=this.m;return 4}return 31}X(t){const n=function(t){const n=t||{};return{kmacKey:A(\"kmacKey\",n.kmacKey,1),funcName:{value:[1128353099],binLen:32},customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});this.O(t,n.funcName);const e=st(it(n.kmacKey),this.m>>>3);for(let t=0;t<e.length;t+=this.m>>>5)this.U=this.v(e.slice(t,t+(this.m>>>5)),this.U),this.A+=this.m;this.H=!0}_(t){const n=a({value:this.h.slice(),binLen:this.u},function(t){let n,e,r=0;const i=[0,0],s=[4294967295&t,t/o&2097151];for(n=6;n>=0;n--)e=s[n>>2]>>>8*n&255,0===e&&0===r||(i[r>>2]|=e<<8*r,r+=1);return r=0!==r?r:1,i[r>>2]|=r<<8*r,{value:r+1>4?i:[i[0]],binLen:8+8*r}}(t.outputLen));return this.F(n.value,n.binLen,this.A,this.L(this.U),t.outputLen)}};class ht{constructor(t,n,e){if(\"SHA-1\"==t)this.P=new L(t,n,e);else if(\"SHA-224\"==t||\"SHA-256\"==t)this.P=new k(t,n,e);else if(\"SHA-384\"==t||\"SHA-512\"==t)this.P=new Q(t,n,e);else{if(\"SHA3-224\"!=t&&\"SHA3-256\"!=t&&\"SHA3-384\"!=t&&\"SHA3-512\"!=t&&\"SHAKE128\"!=t&&\"SHAKE256\"!=t&&\"CSHAKE128\"!=t&&\"CSHAKE256\"!=t&&\"KMAC128\"!=t&&\"KMAC256\"!=t)throw new Error(c);this.P=new ot(t,n,e)}}update(t){return this.P.update(t),this}getHash(t,n){return this.P.getHash(t,n)}setHMACKey(t,n,e){this.P.setHMACKey(t,n,e)}getHMAC(t,n){return this.P.getHMAC(t,n)}}export{ht as default};\n//# sourceMappingURL=sha.mjs.map\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      // eslint-disable-next-line no-undef\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    const check = (/** @type {number} */ i) => {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    };\n\n    check(counter);\n    for (let i = 1; i <= window && delta === null; ++i) {\n      check(counter - i);\n      if (delta !== null) break;\n      check(counter + i);\n      if (delta !== null) break;\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n      // eslint-disable-next-line no-unused-vars\n    } catch (_) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== \"undefined\") {\n      if (POSITIVE_INTEGER_REGEX.test(uriParams.digits)) {\n        config.digits = parseInt(uriParams.digits, 10);\n      } else {\n        throw new TypeError(\"Invalid 'digits' parameter\");\n      }\n    }\n\n    return new OTP(config);\n  }\n\n  /**\n   * Converts an HOTP/TOTP object to a Google Authenticator key URI.\n   * @param {HOTP|TOTP} otp HOTP/TOTP object.\n   * @returns {string} Google Authenticator Key URI.\n   */\n  static stringify(otp) {\n    if (otp instanceof HOTP || otp instanceof TOTP) {\n      return otp.toString();\n    }\n\n    throw new TypeError(\"Invalid 'HOTP/TOTP' object\");\n  }\n}\n\nexport { URI };\n","/**\n * Library version.\n * @type {string}\n */\nconst version = \"__OTPAUTH_VERSION__\";\n\nexport { version 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\ No newline at end of file
diff --git a/dist/otpauth.node.cjs b/dist/otpauth.node.cjs
index 956cc3b..5c59a8d 100644
--- a/dist/otpauth.node.cjs
+++ b/dist/otpauth.node.cjs
@@ -57,6 +57,7 @@ const globalScope = (() => {
     });
     try {
       // @ts-ignore
+      // eslint-disable-next-line no-undef
       if (typeof __GLOBALTHIS__ !== "undefined") return __GLOBALTHIS__;
     } finally {
       // @ts-ignore
@@ -562,7 +563,7 @@ class HOTP {
     // Return early if the token length does not match the digit number.
     if (token.length !== digits) return null;
     let delta = null;
-    for (let i = counter - window; i <= counter + window; ++i) {
+    const check = ( /** @type {number} */i) => {
       const generatedToken = HOTP.generate({
         secret,
         algorithm,
@@ -572,6 +573,13 @@ class HOTP {
       if (timingSafeEqual(token, generatedToken)) {
         delta = i - counter;
       }
+    };
+    check(counter);
+    for (let i = 1; i <= window && delta === null; ++i) {
+      check(counter - i);
+      if (delta !== null) break;
+      check(counter + i);
+      if (delta !== null) break;
     }
     return delta;
   }
@@ -847,7 +855,8 @@ class URI {
     let uriGroups;
     try {
       uriGroups = uri.match(OTPURI_REGEX);
-    } catch (error) {
+      // eslint-disable-next-line no-unused-vars
+    } catch (_) {
       /* Handled below */
     }
     if (!Array.isArray(uriGroups)) {
@@ -958,7 +967,7 @@ class URI {
  * Library version.
  * @type {string}
  */
-const version = "9.2.3";
+const version = "9.2.4";
 
 exports.HOTP = HOTP;
 exports.Secret = Secret;
diff --git a/dist/otpauth.node.min.cjs b/dist/otpauth.node.min.cjs
index 3a939f0..cc04616 100644
--- a/dist/otpauth.node.min.cjs
+++ b/dist/otpauth.node.min.cjs
@@ -1,3 +1,3 @@
 /// <reference types="./otpauth.d.ts" />
-"use strict";var H=require("node:crypto");function T(s){var e=Object.create(null);return s&&Object.keys(s).forEach(function(r){if(r!=="default"){var t=Object.getOwnPropertyDescriptor(s,r);Object.defineProperty(e,r,t.get?t:{enumerable:!0,get:function(){return s[r]}})}}),e.default=s,Object.freeze(e)}var c=T(H);const v=s=>{const e=new ArrayBuffer(8),r=new Uint8Array(e);let t=s;for(let n=7;n>=0&&t!==0;n--)r[n]=t&255,t-=r[n],t/=256;return e};var U=void 0;const d=(()=>{if(typeof globalThis=="object")return globalThis;Object.defineProperty(Object.prototype,"__GLOBALTHIS__",{get(){return this},configurable:!0});try{if(typeof __GLOBALTHIS__!="undefined")return __GLOBALTHIS__}finally{delete Object.prototype.__GLOBALTHIS__}if(typeof self!="undefined")return self;if(typeof window!="undefined")return window;if(typeof global!="undefined")return global})(),E={SHA1:"SHA-1",SHA224:"SHA-224",SHA256:"SHA-256",SHA384:"SHA-384",SHA512:"SHA-512","SHA3-224":"SHA3-224","SHA3-256":"SHA3-256","SHA3-384":"SHA3-384","SHA3-512":"SHA3-512"},O=(s,e,r)=>{if(c!=null&&c.createHmac){const t=c.createHmac(s,d.Buffer.from(e));return t.update(d.Buffer.from(r)),t.digest().buffer}else{const t=E[s.toUpperCase()];if(typeof t=="undefined")throw new TypeError("Unknown hash function");const n=new U(t,"ARRAYBUFFER");return n.setHMACKey(e,"ARRAYBUFFER"),n.update(r),n.getHMAC("ARRAYBUFFER")}},m="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",L=s=>{let e=s.length;for(;s[e-1]==="=";)--e;const r=(e<s.length?s.substring(0,e):s).toUpperCase(),t=new ArrayBuffer(r.length*5/8|0),n=new Uint8Array(t);let i=0,a=0,o=0;for(let f=0;f<r.length;f++){const g=m.indexOf(r[f]);if(g===-1)throw new TypeError(`Invalid character found: ${r[f]}`);a=a<<5|g,i+=5,i>=8&&(i-=8,n[o++]=a>>>i)}return t},B=s=>{const e=new Uint8Array(s);let r=0,t=0,n="";for(let i=0;i<e.length;i++)for(t=t<<8|e[i],r+=8;r>=5;)n+=m[t>>>r-5&31],r-=5;return r>0&&(n+=m[t<<5-r&31]),n},C=s=>{const e=new ArrayBuffer(s.length/2),r=new Uint8Array(e);for(let t=0;t<s.length;t+=2)r[t/2]=parseInt(s.substring(t,t+2),16);return e},R=s=>{const e=new Uint8Array(s);let r="";for(let t=0;t<e.length;t++){const n=e[t].toString(16);n.length===1&&(r+="0"),r+=n}return r.toUpperCase()},P=s=>{const e=new ArrayBuffer(s.length),r=new Uint8Array(e);for(let t=0;t<s.length;t++)r[t]=s.charCodeAt(t)&255;return e},j=s=>{const e=new Uint8Array(s);let r="";for(let t=0;t<e.length;t++)r+=String.fromCharCode(e[t]);return r},y=d.TextEncoder?new d.TextEncoder("utf-8"):null,A=d.TextDecoder?new d.TextDecoder("utf-8"):null,x=s=>{if(!y)throw new Error("Encoding API not available");return y.encode(s).buffer},D=s=>{if(!A)throw new Error("Encoding API not available");return A.decode(s)},F=s=>{var e;if(c!=null&&c.randomBytes)return c.randomBytes(s).buffer;if(!((e=d.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return d.crypto.getRandomValues(new Uint8Array(s)).buffer};class h{constructor({buffer:e,size:r=20}={}){this.buffer=typeof e=="undefined"?F(r):e}static fromLatin1(e){return new h({buffer:P(e)})}static fromUTF8(e){return new h({buffer:x(e)})}static fromBase32(e){return new h({buffer:L(e)})}static fromHex(e){return new h({buffer:C(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:j(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:D(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:B(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:R(this.buffer)}),this.hex}}const M=(s,e)=>{if(c!=null&&c.timingSafeEqual)return c.timingSafeEqual(d.Buffer.from(s),d.Buffer.from(e));{if(s.length!==e.length)throw new TypeError("Input strings must have the same length");let r=-1,t=0;for(;++r<s.length;)t|=s.charCodeAt(r)^e.charCodeAt(r);return t===0}};var k=Math.pow;let p=class l{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=l.defaults.issuer,label:r=l.defaults.label,issuerInLabel:t=l.defaults.issuerInLabel,secret:n=new h,algorithm:i=l.defaults.algorithm,digits:a=l.defaults.digits,counter:o=l.defaults.counter}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof n=="string"?h.fromBase32(n):n,this.algorithm=i.toUpperCase(),this.digits=a,this.counter=o}static generate({secret:e,algorithm:r=l.defaults.algorithm,digits:t=l.defaults.digits,counter:n=l.defaults.counter}){const i=new Uint8Array(O(r,e.buffer,v(n))),a=i[i.byteLength-1]&15;return(((i[a]&127)<<24|(i[a+1]&255)<<16|(i[a+2]&255)<<8|i[a+3]&255)%k(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return l.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:r,algorithm:t,digits:n,counter:i=l.defaults.counter,window:a=l.defaults.window}){if(e.length!==n)return null;let o=null;for(let f=i-a;f<=i+a;++f){const g=l.generate({secret:r,algorithm:t,digits:n,counter:f});M(e,g)&&(o=f-i)}return o}validate({token:e,counter:r=this.counter,window:t}){return l.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class u{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=u.defaults.issuer,label:r=u.defaults.label,issuerInLabel:t=u.defaults.issuerInLabel,secret:n=new h,algorithm:i=u.defaults.algorithm,digits:a=u.defaults.digits,period:o=u.defaults.period}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof n=="string"?h.fromBase32(n):n,this.algorithm=i.toUpperCase(),this.digits=a,this.period=o}static generate({secret:e,algorithm:r,digits:t,period:n=u.defaults.period,timestamp:i=Date.now()}){return p.generate({secret:e,algorithm:r,digits:t,counter:Math.floor(i/1e3/n)})}generate({timestamp:e=Date.now()}={}){return u.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:r,algorithm:t,digits:n,period:i=u.defaults.period,timestamp:a=Date.now(),window:o}){return p.validate({token:e,secret:r,algorithm:t,digits:n,counter:Math.floor(a/1e3/i),window:o})}validate({token:e,timestamp:r,window:t}){return u.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const G=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,Y=/^[2-7A-Z]+=*$/i,Z=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,q=/^[+-]?\d+$/,$=/^\+?[1-9]\d*$/;class V{static parse(e){let r;try{r=e.match(G)}catch(f){}if(!Array.isArray(r))throw new URIError("Invalid URI format");const t=r[1].toLowerCase(),n=r[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),i=r[3].split("&").reduce((f,g)=>{const w=g.split(/=(.*)/,2).map(decodeURIComponent),I=w[0].toLowerCase(),S=w[1],b=f;return b[I]=S,b},{});let a;const o={};if(t==="hotp")if(a=p,typeof i.counter!="undefined"&&q.test(i.counter))o.counter=parseInt(i.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(a=u,typeof i.period!="undefined")if($.test(i.period))o.period=parseInt(i.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof i.issuer!="undefined"&&(o.issuer=i.issuer),n.length===2?(o.label=n[1],typeof o.issuer=="undefined"||o.issuer===""?o.issuer=n[0]:n[0]===""&&(o.issuerInLabel=!1)):(o.label=n[0],typeof o.issuer!="undefined"&&o.issuer!==""&&(o.issuerInLabel=!1)),typeof i.secret!="undefined"&&Y.test(i.secret))o.secret=i.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof i.algorithm!="undefined")if(Z.test(i.algorithm))o.algorithm=i.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof i.digits!="undefined")if($.test(i.digits))o.digits=parseInt(i.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new a(o)}static stringify(e){if(e instanceof p||e instanceof u)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const z="9.2.3";exports.HOTP=p,exports.Secret=h,exports.TOTP=u,exports.URI=V,exports.version=z;
+"use strict";var H=require("node:crypto");function T(s){var e=Object.create(null);return s&&Object.keys(s).forEach(function(r){if(r!=="default"){var t=Object.getOwnPropertyDescriptor(s,r);Object.defineProperty(e,r,t.get?t:{enumerable:!0,get:function(){return s[r]}})}}),e.default=s,Object.freeze(e)}var g=T(H);const v=s=>{const e=new ArrayBuffer(8),r=new Uint8Array(e);let t=s;for(let n=7;n>=0&&t!==0;n--)r[n]=t&255,t-=r[n],t/=256;return e};var U=void 0;const h=(()=>{if(typeof globalThis=="object")return globalThis;Object.defineProperty(Object.prototype,"__GLOBALTHIS__",{get(){return this},configurable:!0});try{if(typeof __GLOBALTHIS__!="undefined")return __GLOBALTHIS__}finally{delete Object.prototype.__GLOBALTHIS__}if(typeof self!="undefined")return self;if(typeof window!="undefined")return window;if(typeof global!="undefined")return global})(),E={SHA1:"SHA-1",SHA224:"SHA-224",SHA256:"SHA-256",SHA384:"SHA-384",SHA512:"SHA-512","SHA3-224":"SHA3-224","SHA3-256":"SHA3-256","SHA3-384":"SHA3-384","SHA3-512":"SHA3-512"},O=(s,e,r)=>{if(g!=null&&g.createHmac){const t=g.createHmac(s,h.Buffer.from(e));return t.update(h.Buffer.from(r)),t.digest().buffer}else{const t=E[s.toUpperCase()];if(typeof t=="undefined")throw new TypeError("Unknown hash function");const n=new U(t,"ARRAYBUFFER");return n.setHMACKey(e,"ARRAYBUFFER"),n.update(r),n.getHMAC("ARRAYBUFFER")}},w="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",L=s=>{let e=s.length;for(;s[e-1]==="=";)--e;const r=(e<s.length?s.substring(0,e):s).toUpperCase(),t=new ArrayBuffer(r.length*5/8|0),n=new Uint8Array(t);let i=0,a=0,o=0;for(let d=0;d<r.length;d++){const f=w.indexOf(r[d]);if(f===-1)throw new TypeError(`Invalid character found: ${r[d]}`);a=a<<5|f,i+=5,i>=8&&(i-=8,n[o++]=a>>>i)}return t},B=s=>{const e=new Uint8Array(s);let r=0,t=0,n="";for(let i=0;i<e.length;i++)for(t=t<<8|e[i],r+=8;r>=5;)n+=w[t>>>r-5&31],r-=5;return r>0&&(n+=w[t<<5-r&31]),n},C=s=>{const e=new ArrayBuffer(s.length/2),r=new Uint8Array(e);for(let t=0;t<s.length;t+=2)r[t/2]=parseInt(s.substring(t,t+2),16);return e},R=s=>{const e=new Uint8Array(s);let r="";for(let t=0;t<e.length;t++){const n=e[t].toString(16);n.length===1&&(r+="0"),r+=n}return r.toUpperCase()},P=s=>{const e=new ArrayBuffer(s.length),r=new Uint8Array(e);for(let t=0;t<s.length;t++)r[t]=s.charCodeAt(t)&255;return e},j=s=>{const e=new Uint8Array(s);let r="";for(let t=0;t<e.length;t++)r+=String.fromCharCode(e[t]);return r},y=h.TextEncoder?new h.TextEncoder("utf-8"):null,A=h.TextDecoder?new h.TextDecoder("utf-8"):null,x=s=>{if(!y)throw new Error("Encoding API not available");return y.encode(s).buffer},D=s=>{if(!A)throw new Error("Encoding API not available");return A.decode(s)},F=s=>{var e;if(g!=null&&g.randomBytes)return g.randomBytes(s).buffer;if(!((e=h.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return h.crypto.getRandomValues(new Uint8Array(s)).buffer};class c{constructor({buffer:e,size:r=20}={}){this.buffer=typeof e=="undefined"?F(r):e}static fromLatin1(e){return new c({buffer:P(e)})}static fromUTF8(e){return new c({buffer:x(e)})}static fromBase32(e){return new c({buffer:L(e)})}static fromHex(e){return new c({buffer:C(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:j(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:D(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:B(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:R(this.buffer)}),this.hex}}const M=(s,e)=>{if(g!=null&&g.timingSafeEqual)return g.timingSafeEqual(h.Buffer.from(s),h.Buffer.from(e));{if(s.length!==e.length)throw new TypeError("Input strings must have the same length");let r=-1,t=0;for(;++r<s.length;)t|=s.charCodeAt(r)^e.charCodeAt(r);return t===0}};var k=Math.pow;let p=class l{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=l.defaults.issuer,label:r=l.defaults.label,issuerInLabel:t=l.defaults.issuerInLabel,secret:n=new c,algorithm:i=l.defaults.algorithm,digits:a=l.defaults.digits,counter:o=l.defaults.counter}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof n=="string"?c.fromBase32(n):n,this.algorithm=i.toUpperCase(),this.digits=a,this.counter=o}static generate({secret:e,algorithm:r=l.defaults.algorithm,digits:t=l.defaults.digits,counter:n=l.defaults.counter}){const i=new Uint8Array(O(r,e.buffer,v(n))),a=i[i.byteLength-1]&15;return(((i[a]&127)<<24|(i[a+1]&255)<<16|(i[a+2]&255)<<8|i[a+3]&255)%k(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return l.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:r,algorithm:t,digits:n,counter:i=l.defaults.counter,window:a=l.defaults.window}){if(e.length!==n)return null;let o=null;const d=f=>{const m=l.generate({secret:r,algorithm:t,digits:n,counter:f});M(e,m)&&(o=f-i)};d(i);for(let f=1;f<=a&&o===null&&(d(i-f),!(o!==null||(d(i+f),o!==null)));++f);return o}validate({token:e,counter:r=this.counter,window:t}){return l.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class u{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=u.defaults.issuer,label:r=u.defaults.label,issuerInLabel:t=u.defaults.issuerInLabel,secret:n=new c,algorithm:i=u.defaults.algorithm,digits:a=u.defaults.digits,period:o=u.defaults.period}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof n=="string"?c.fromBase32(n):n,this.algorithm=i.toUpperCase(),this.digits=a,this.period=o}static generate({secret:e,algorithm:r,digits:t,period:n=u.defaults.period,timestamp:i=Date.now()}){return p.generate({secret:e,algorithm:r,digits:t,counter:Math.floor(i/1e3/n)})}generate({timestamp:e=Date.now()}={}){return u.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:r,algorithm:t,digits:n,period:i=u.defaults.period,timestamp:a=Date.now(),window:o}){return p.validate({token:e,secret:r,algorithm:t,digits:n,counter:Math.floor(a/1e3/i),window:o})}validate({token:e,timestamp:r,window:t}){return u.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const G=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,Y=/^[2-7A-Z]+=*$/i,Z=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,q=/^[+-]?\d+$/,$=/^\+?[1-9]\d*$/;class V{static parse(e){let r;try{r=e.match(G)}catch(d){}if(!Array.isArray(r))throw new URIError("Invalid URI format");const t=r[1].toLowerCase(),n=r[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),i=r[3].split("&").reduce((d,f)=>{const m=f.split(/=(.*)/,2).map(decodeURIComponent),I=m[0].toLowerCase(),S=m[1],b=d;return b[I]=S,b},{});let a;const o={};if(t==="hotp")if(a=p,typeof i.counter!="undefined"&&q.test(i.counter))o.counter=parseInt(i.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(a=u,typeof i.period!="undefined")if($.test(i.period))o.period=parseInt(i.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof i.issuer!="undefined"&&(o.issuer=i.issuer),n.length===2?(o.label=n[1],typeof o.issuer=="undefined"||o.issuer===""?o.issuer=n[0]:n[0]===""&&(o.issuerInLabel=!1)):(o.label=n[0],typeof o.issuer!="undefined"&&o.issuer!==""&&(o.issuerInLabel=!1)),typeof i.secret!="undefined"&&Y.test(i.secret))o.secret=i.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof i.algorithm!="undefined")if(Z.test(i.algorithm))o.algorithm=i.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof i.digits!="undefined")if($.test(i.digits))o.digits=parseInt(i.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new a(o)}static stringify(e){if(e instanceof p||e instanceof u)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const z="9.2.4";exports.HOTP=p,exports.Secret=c,exports.TOTP=u,exports.URI=V,exports.version=z;
 //# sourceMappingURL=otpauth.node.min.cjs.map
diff --git a/dist/otpauth.node.min.cjs.map b/dist/otpauth.node.min.cjs.map
index 8b381d0..f3dd829 100644
--- a/dist/otpauth.node.min.cjs.map
+++ b/dist/otpauth.node.min.cjs.map
@@ -1 +1 @@
-{"version":3,"file":"otpauth.node.min.cjs","sources":["../src/utils/encoding/uint.js","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    for (let i = counter - window; i <= counter + window; ++i) {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ 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HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof 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\ No newline at end of file
+{"version":3,"file":"otpauth.node.min.cjs","sources":["../src/utils/encoding/uint.js","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      // eslint-disable-next-line no-undef\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    const check = (/** @type {number} */ i) => {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    };\n\n    check(counter);\n    for (let i = 1; i <= window && delta === null; ++i) {\n      check(counter - i);\n      if (delta !== null) break;\n      check(counter + i);\n      if (delta !== null) break;\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n      // eslint-disable-next-line no-unused-vars\n    } catch (_) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== \"undefined\") {\n      if (POSITIVE_INTEGER_REGEX.test(uriParams.digits)) {\n        config.digits = parseInt(uriParams.digits, 10);\n      } else {\n        throw new TypeError(\"Invalid 'digits' parameter\");\n      }\n    }\n\n    return new OTP(config);\n  }\n\n  /**\n   * Converts an HOTP/TOTP object to a Google Authenticator key URI.\n   * @param {HOTP|TOTP} otp HOTP/TOTP object.\n   * @returns {string} Google Authenticator Key URI.\n   */\n  static stringify(otp) {\n    if (otp instanceof HOTP || otp instanceof TOTP) {\n      return otp.toString();\n    }\n\n    throw new TypeError(\"Invalid 'HOTP/TOTP' object\");\n  }\n}\n\nexport { URI };\n","/**\n * Library version.\n * @type {string}\n */\nconst version = \"__OTPAUTH_VERSION__\";\n\nexport { version 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\ No newline at end of file
diff --git a/dist/otpauth.node.min.mjs b/dist/otpauth.node.min.mjs
index 72a6d3b..d7e1318 100644
--- a/dist/otpauth.node.min.mjs
+++ b/dist/otpauth.node.min.mjs
@@ -1,3 +1,3 @@
 /// <reference types="./otpauth.d.ts" />
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T(t,"ARRAYBUFFER");return s.setHMACKey(e,"ARRAYBUFFER"),s.update(r),s.getHMAC("ARRAYBUFFER")}},m="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",E=n=>{let e=n.length;for(;n[e-1]==="=";)--e;const r=(e<n.length?n.substring(0,e):n).toUpperCase(),t=new ArrayBuffer(r.length*5/8|0),s=new Uint8Array(t);let i=0,a=0,o=0;for(let f=0;f<r.length;f++){const g=m.indexOf(r[f]);if(g===-1)throw new TypeError(`Invalid character found: ${r[f]}`);a=a<<5|g,i+=5,i>=8&&(i-=8,s[o++]=a>>>i)}return t},L=n=>{const e=new Uint8Array(n);let r=0,t=0,s="";for(let i=0;i<e.length;i++)for(t=t<<8|e[i],r+=8;r>=5;)s+=m[t>>>r-5&31],r-=5;return r>0&&(s+=m[t<<5-r&31]),s},B=n=>{const e=new ArrayBuffer(n.length/2),r=new Uint8Array(e);for(let t=0;t<n.length;t+=2)r[t/2]=parseInt(n.substring(t,t+2),16);return e},C=n=>{const e=new Uint8Array(n);let r="";for(let t=0;t<e.length;t++){const s=e[t].toString(16);s.length===1&&(r+="0"),r+=s}return r.toUpperCase()},O=n=>{const e=new ArrayBuffer(n.length),r=new Uint8Array(e);for(let t=0;t<n.length;t++)r[t]=n.charCodeAt(t)&255;return e},R=n=>{const e=new Uint8Array(n);let r="";for(let t=0;t<e.length;t++)r+=String.fromCharCode(e[t]);return r},y=d.TextEncoder?new d.TextEncoder("utf-8"):null,A=d.TextDecoder?new d.TextDecoder("utf-8"):null,P=n=>{if(!y)throw new Error("Encoding API not available");return y.encode(n).buffer},x=n=>{if(!A)throw new Error("Encoding API not available");return A.decode(n)},j=n=>{var e;if(c!=null&&c.randomBytes)return c.randomBytes(n).buffer;if(!((e=d.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return d.crypto.getRandomValues(new Uint8Array(n)).buffer};class h{constructor({buffer:e,size:r=20}={}){this.buffer=typeof e=="undefined"?j(r):e}static fromLatin1(e){return new h({buffer:O(e)})}static fromUTF8(e){return new h({buffer:P(e)})}static fromBase32(e){return new h({buffer:E(e)})}static fromHex(e){return new h({buffer:B(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:R(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:x(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:L(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:C(this.buffer)}),this.hex}}const k=(n,e)=>{if(c!=null&&c.timingSafeEqual)return c.timingSafeEqual(d.Buffer.from(n),d.Buffer.from(e));{if(n.length!==e.length)throw new TypeError("Input strings must have the same length");let r=-1,t=0;for(;++r<n.length;)t|=n.charCodeAt(r)^e.charCodeAt(r);return t===0}};var F=Math.pow;let p=class l{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=l.defaults.issuer,label:r=l.defaults.label,issuerInLabel:t=l.defaults.issuerInLabel,secret:s=new 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l.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class u{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=u.defaults.issuer,label:r=u.defaults.label,issuerInLabel:t=u.defaults.issuerInLabel,secret:s=new h,algorithm:i=u.defaults.algorithm,digits:a=u.defaults.digits,period:o=u.defaults.period}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof s=="string"?h.fromBase32(s):s,this.algorithm=i.toUpperCase(),this.digits=a,this.period=o}static generate({secret:e,algorithm:r,digits:t,period:s=u.defaults.period,timestamp:i=Date.now()}){return p.generate({secret:e,algorithm:r,digits:t,counter:Math.floor(i/1e3/s)})}generate({timestamp:e=Date.now()}={}){return u.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:r,algorithm:t,digits:s,period:i=u.defaults.period,timestamp:a=Date.now(),window:o}){return p.validate({token:e,secret:r,algorithm:t,digits:s,counter:Math.floor(a/1e3/i),window:o})}validate({token:e,timestamp:r,window:t}){return u.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const M=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,D=/^[2-7A-Z]+=*$/i,G=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,Y=/^[+-]?\d+$/,$=/^\+?[1-9]\d*$/;class Z{static parse(e){let r;try{r=e.match(M)}catch(f){}if(!Array.isArray(r))throw new URIError("Invalid URI format");const t=r[1].toLowerCase(),s=r[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),i=r[3].split("&").reduce((f,g)=>{const w=g.split(/=(.*)/,2).map(decodeURIComponent),I=w[0].toLowerCase(),S=w[1],b=f;return b[I]=S,b},{});let a;const o={};if(t==="hotp")if(a=p,typeof i.counter!="undefined"&&Y.test(i.counter))o.counter=parseInt(i.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(a=u,typeof i.period!="undefined")if($.test(i.period))o.period=parseInt(i.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof i.issuer!="undefined"&&(o.issuer=i.issuer),s.length===2?(o.label=s[1],typeof o.issuer=="undefined"||o.issuer===""?o.issuer=s[0]:s[0]===""&&(o.issuerInLabel=!1)):(o.label=s[0],typeof o.issuer!="undefined"&&o.issuer!==""&&(o.issuerInLabel=!1)),typeof i.secret!="undefined"&&D.test(i.secret))o.secret=i.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof i.algorithm!="undefined")if(G.test(i.algorithm))o.algorithm=i.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof i.digits!="undefined")if($.test(i.digits))o.digits=parseInt(i.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new a(o)}static stringify(e){if(e instanceof p||e instanceof u)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const V="9.2.3";export{p as HOTP,h as Secret,u as TOTP,Z as URI,V as version};
+import*as g from"node:crypto";const H=n=>{const e=new ArrayBuffer(8),r=new Uint8Array(e);let t=n;for(let s=7;s>=0&&t!==0;s--)r[s]=t&255,t-=r[s],t/=256;return e};var T=void 0;const h=(()=>{if(typeof globalThis=="object")return globalThis;Object.defineProperty(Object.prototype,"__GLOBALTHIS__",{get(){return this},configurable:!0});try{if(typeof __GLOBALTHIS__!="undefined")return __GLOBALTHIS__}finally{delete Object.prototype.__GLOBALTHIS__}if(typeof self!="undefined")return self;if(typeof window!="undefined")return window;if(typeof global!="undefined")return global})(),U={SHA1:"SHA-1",SHA224:"SHA-224",SHA256:"SHA-256",SHA384:"SHA-384",SHA512:"SHA-512","SHA3-224":"SHA3-224","SHA3-256":"SHA3-256","SHA3-384":"SHA3-384","SHA3-512":"SHA3-512"},v=(n,e,r)=>{if(g!=null&&g.createHmac){const t=g.createHmac(n,h.Buffer.from(e));return t.update(h.Buffer.from(r)),t.digest().buffer}else{const t=U[n.toUpperCase()];if(typeof t=="undefined")throw new TypeError("Unknown hash function");const s=new T(t,"ARRAYBUFFER");return s.setHMACKey(e,"ARRAYBUFFER"),s.update(r),s.getHMAC("ARRAYBUFFER")}},w="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",E=n=>{let e=n.length;for(;n[e-1]==="=";)--e;const r=(e<n.length?n.substring(0,e):n).toUpperCase(),t=new ArrayBuffer(r.length*5/8|0),s=new Uint8Array(t);let i=0,a=0,o=0;for(let d=0;d<r.length;d++){const f=w.indexOf(r[d]);if(f===-1)throw new TypeError(`Invalid character found: ${r[d]}`);a=a<<5|f,i+=5,i>=8&&(i-=8,s[o++]=a>>>i)}return t},L=n=>{const e=new Uint8Array(n);let r=0,t=0,s="";for(let i=0;i<e.length;i++)for(t=t<<8|e[i],r+=8;r>=5;)s+=w[t>>>r-5&31],r-=5;return r>0&&(s+=w[t<<5-r&31]),s},B=n=>{const e=new ArrayBuffer(n.length/2),r=new Uint8Array(e);for(let t=0;t<n.length;t+=2)r[t/2]=parseInt(n.substring(t,t+2),16);return e},C=n=>{const e=new Uint8Array(n);let r="";for(let t=0;t<e.length;t++){const s=e[t].toString(16);s.length===1&&(r+="0"),r+=s}return r.toUpperCase()},O=n=>{const e=new ArrayBuffer(n.length),r=new Uint8Array(e);for(let t=0;t<n.length;t++)r[t]=n.charCodeAt(t)&255;return e},R=n=>{const e=new Uint8Array(n);let r="";for(let t=0;t<e.length;t++)r+=String.fromCharCode(e[t]);return r},y=h.TextEncoder?new h.TextEncoder("utf-8"):null,A=h.TextDecoder?new h.TextDecoder("utf-8"):null,P=n=>{if(!y)throw new Error("Encoding API not available");return y.encode(n).buffer},x=n=>{if(!A)throw new Error("Encoding API not available");return A.decode(n)},j=n=>{var e;if(g!=null&&g.randomBytes)return g.randomBytes(n).buffer;if(!((e=h.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return h.crypto.getRandomValues(new Uint8Array(n)).buffer};class c{constructor({buffer:e,size:r=20}={}){this.buffer=typeof e=="undefined"?j(r):e}static fromLatin1(e){return new c({buffer:O(e)})}static fromUTF8(e){return new c({buffer:P(e)})}static fromBase32(e){return new c({buffer:E(e)})}static fromHex(e){return new c({buffer:B(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:R(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:x(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:L(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:C(this.buffer)}),this.hex}}const k=(n,e)=>{if(g!=null&&g.timingSafeEqual)return g.timingSafeEqual(h.Buffer.from(n),h.Buffer.from(e));{if(n.length!==e.length)throw new TypeError("Input strings must have the same length");let r=-1,t=0;for(;++r<n.length;)t|=n.charCodeAt(r)^e.charCodeAt(r);return t===0}};var F=Math.pow;let p=class l{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=l.defaults.issuer,label:r=l.defaults.label,issuerInLabel:t=l.defaults.issuerInLabel,secret:s=new c,algorithm:i=l.defaults.algorithm,digits:a=l.defaults.digits,counter:o=l.defaults.counter}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof s=="string"?c.fromBase32(s):s,this.algorithm=i.toUpperCase(),this.digits=a,this.counter=o}static generate({secret:e,algorithm:r=l.defaults.algorithm,digits:t=l.defaults.digits,counter:s=l.defaults.counter}){const i=new Uint8Array(v(r,e.buffer,H(s))),a=i[i.byteLength-1]&15;return(((i[a]&127)<<24|(i[a+1]&255)<<16|(i[a+2]&255)<<8|i[a+3]&255)%F(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return l.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:r,algorithm:t,digits:s,counter:i=l.defaults.counter,window:a=l.defaults.window}){if(e.length!==s)return null;let o=null;const d=f=>{const m=l.generate({secret:r,algorithm:t,digits:s,counter:f});k(e,m)&&(o=f-i)};d(i);for(let f=1;f<=a&&o===null&&(d(i-f),!(o!==null||(d(i+f),o!==null)));++f);return o}validate({token:e,counter:r=this.counter,window:t}){return l.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class u{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=u.defaults.issuer,label:r=u.defaults.label,issuerInLabel:t=u.defaults.issuerInLabel,secret:s=new c,algorithm:i=u.defaults.algorithm,digits:a=u.defaults.digits,period:o=u.defaults.period}={}){this.issuer=e,this.label=r,this.issuerInLabel=t,this.secret=typeof s=="string"?c.fromBase32(s):s,this.algorithm=i.toUpperCase(),this.digits=a,this.period=o}static generate({secret:e,algorithm:r,digits:t,period:s=u.defaults.period,timestamp:i=Date.now()}){return p.generate({secret:e,algorithm:r,digits:t,counter:Math.floor(i/1e3/s)})}generate({timestamp:e=Date.now()}={}){return u.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:r,algorithm:t,digits:s,period:i=u.defaults.period,timestamp:a=Date.now(),window:o}){return p.validate({token:e,secret:r,algorithm:t,digits:s,counter:Math.floor(a/1e3/i),window:o})}validate({token:e,timestamp:r,window:t}){return u.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const M=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,D=/^[2-7A-Z]+=*$/i,G=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,Y=/^[+-]?\d+$/,$=/^\+?[1-9]\d*$/;class Z{static parse(e){let r;try{r=e.match(M)}catch(d){}if(!Array.isArray(r))throw new URIError("Invalid URI format");const t=r[1].toLowerCase(),s=r[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),i=r[3].split("&").reduce((d,f)=>{const m=f.split(/=(.*)/,2).map(decodeURIComponent),I=m[0].toLowerCase(),S=m[1],b=d;return b[I]=S,b},{});let a;const o={};if(t==="hotp")if(a=p,typeof i.counter!="undefined"&&Y.test(i.counter))o.counter=parseInt(i.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(a=u,typeof i.period!="undefined")if($.test(i.period))o.period=parseInt(i.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof i.issuer!="undefined"&&(o.issuer=i.issuer),s.length===2?(o.label=s[1],typeof o.issuer=="undefined"||o.issuer===""?o.issuer=s[0]:s[0]===""&&(o.issuerInLabel=!1)):(o.label=s[0],typeof o.issuer!="undefined"&&o.issuer!==""&&(o.issuerInLabel=!1)),typeof i.secret!="undefined"&&D.test(i.secret))o.secret=i.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof i.algorithm!="undefined")if(G.test(i.algorithm))o.algorithm=i.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof i.digits!="undefined")if($.test(i.digits))o.digits=parseInt(i.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new a(o)}static stringify(e){if(e instanceof p||e instanceof u)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const V="9.2.4";export{p as HOTP,c as Secret,u as TOTP,Z as URI,V as version};
 //# sourceMappingURL=otpauth.node.min.mjs.map
diff --git a/dist/otpauth.node.min.mjs.map b/dist/otpauth.node.min.mjs.map
index 8e3f3bf..6068364 100644
--- a/dist/otpauth.node.min.mjs.map
+++ b/dist/otpauth.node.min.mjs.map
@@ -1 +1 @@
-{"version":3,"file":"otpauth.node.min.mjs","sources":["../src/utils/encoding/uint.js","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    for (let i = counter - window; i <= counter + window; ++i) {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ 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HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof 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+{"version":3,"file":"otpauth.node.min.mjs","sources":["../src/utils/encoding/uint.js","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      // eslint-disable-next-line no-undef\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    const check = (/** @type {number} */ i) => {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    };\n\n    check(counter);\n    for (let i = 1; i <= window && delta === null; ++i) {\n      check(counter - i);\n      if (delta !== null) break;\n      check(counter + i);\n      if (delta !== null) break;\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n      // eslint-disable-next-line no-unused-vars\n    } catch (_) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== \"undefined\") {\n      if (POSITIVE_INTEGER_REGEX.test(uriParams.digits)) {\n        config.digits = parseInt(uriParams.digits, 10);\n      } else {\n        throw new TypeError(\"Invalid 'digits' parameter\");\n      }\n    }\n\n    return new OTP(config);\n  }\n\n  /**\n   * Converts an HOTP/TOTP object to a Google Authenticator key URI.\n   * @param {HOTP|TOTP} otp HOTP/TOTP object.\n   * @returns {string} Google Authenticator Key URI.\n   */\n  static stringify(otp) {\n    if (otp instanceof HOTP || otp instanceof TOTP) {\n      return otp.toString();\n    }\n\n    throw new TypeError(\"Invalid 'HOTP/TOTP' object\");\n  }\n}\n\nexport { URI };\n","/**\n * Library version.\n * @type {string}\n */\nconst version = \"__OTPAUTH_VERSION__\";\n\nexport { version 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\ No newline at end of file
diff --git a/dist/otpauth.node.mjs b/dist/otpauth.node.mjs
index 8ea898e..88f50f0 100644
--- a/dist/otpauth.node.mjs
+++ b/dist/otpauth.node.mjs
@@ -36,6 +36,7 @@ const globalScope = (() => {
     });
     try {
       // @ts-ignore
+      // eslint-disable-next-line no-undef
       if (typeof __GLOBALTHIS__ !== "undefined") return __GLOBALTHIS__;
     } finally {
       // @ts-ignore
@@ -541,7 +542,7 @@ class HOTP {
     // Return early if the token length does not match the digit number.
     if (token.length !== digits) return null;
     let delta = null;
-    for (let i = counter - window; i <= counter + window; ++i) {
+    const check = ( /** @type {number} */i) => {
       const generatedToken = HOTP.generate({
         secret,
         algorithm,
@@ -551,6 +552,13 @@ class HOTP {
       if (timingSafeEqual(token, generatedToken)) {
         delta = i - counter;
       }
+    };
+    check(counter);
+    for (let i = 1; i <= window && delta === null; ++i) {
+      check(counter - i);
+      if (delta !== null) break;
+      check(counter + i);
+      if (delta !== null) break;
     }
     return delta;
   }
@@ -826,7 +834,8 @@ class URI {
     let uriGroups;
     try {
       uriGroups = uri.match(OTPURI_REGEX);
-    } catch (error) {
+      // eslint-disable-next-line no-unused-vars
+    } catch (_) {
       /* Handled below */
     }
     if (!Array.isArray(uriGroups)) {
@@ -937,6 +946,6 @@ class URI {
  * Library version.
  * @type {string}
  */
-const version = "9.2.3";
+const version = "9.2.4";
 
 export { HOTP, Secret, TOTP, URI, version };
diff --git a/dist/otpauth.umd.js b/dist/otpauth.umd.js
index e743636..e20fa92 100644
--- a/dist/otpauth.umd.js
+++ b/dist/otpauth.umd.js
@@ -762,6 +762,7 @@
       });
       try {
         // @ts-ignore
+        // eslint-disable-next-line no-undef
         if (typeof __GLOBALTHIS__ !== "undefined") return __GLOBALTHIS__;
       } finally {
         // @ts-ignore
@@ -1259,7 +1260,7 @@
       // Return early if the token length does not match the digit number.
       if (token.length !== digits) return null;
       let delta = null;
-      for (let i = counter - window; i <= counter + window; ++i) {
+      const check = ( /** @type {number} */i) => {
         const generatedToken = HOTP.generate({
           secret,
           algorithm,
@@ -1269,6 +1270,13 @@
         if (timingSafeEqual(token, generatedToken)) {
           delta = i - counter;
         }
+      };
+      check(counter);
+      for (let i = 1; i <= window && delta === null; ++i) {
+        check(counter - i);
+        if (delta !== null) break;
+        check(counter + i);
+        if (delta !== null) break;
       }
       return delta;
     }
@@ -1544,7 +1552,8 @@
       let uriGroups;
       try {
         uriGroups = uri.match(OTPURI_REGEX);
-      } catch (error) {
+        // eslint-disable-next-line no-unused-vars
+      } catch (_) {
         /* Handled below */
       }
       if (!Array.isArray(uriGroups)) {
@@ -1655,7 +1664,7 @@
    * Library version.
    * @type {string}
    */
-  const version = "9.2.3";
+  const version = "9.2.4";
 
   exports.HOTP = HOTP;
   exports.Secret = Secret;
diff --git a/dist/otpauth.umd.min.js b/dist/otpauth.umd.min.js
index 07e8d44..69d5998 100644
--- a/dist/otpauth.umd.min.js
+++ b/dist/otpauth.umd.min.js
@@ -1,3 +1,3 @@
 /// <reference types="./otpauth.d.ts" />
-(function(C,P){typeof exports=="object"&&typeof module!="undefined"?P(exports):typeof define=="function"&&define.amd?define(["exports"],P):(C=typeof globalThis!="undefined"?globalThis:C||self,P(C.OTPAuth={}))})(this,function(C){"use strict";const P=r=>{const e=new ArrayBuffer(8),n=new Uint8Array(e);let t=r;for(let i=7;i>=0&&t!==0;i--)n[i]=t&255,t-=n[i],t/=256;return e};var Z=Object.freeze({__proto__:null,createHmac:void 0,randomBytes:void 0,timingSafeEqual:void 0});const W="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",_="ARRAYBUFFER not supported by this environment",ee="UINT8ARRAY not supported by this environment";function te(r,e,n,t){let i,s,u;const c=e||[0],a=(n=n||0)>>>3,l=t===-1?3:0;for(i=0;i<r.length;i+=1)u=i+a,s=u>>>2,c.length<=s&&c.push(0),c[s]|=r[i]<<8*(l+t*(u%4));return{value:c,binLen:8*r.length+n}}function F(r,e,n){switch(e){case"UTF8":case"UTF16BE":case"UTF16LE":break;default:throw new Error("encoding must be UTF8, UTF16BE, or UTF16LE")}switch(r){case"HEX":return function(t,i,s){return function(u,c,a,l){let d,h,f,g;if(u.length%2!=0)throw new Error("String of HEX type must be in byte increments");const p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(d=0;d<u.length;d+=2){if(h=parseInt(u.substr(d,2),16),isNaN(h))throw new Error("String of HEX type contains invalid characters");for(g=(d>>>1)+m,f=g>>>2;p.length<=f;)p.push(0);p[f]|=h<<8*(A+l*(g%4))}return{value:p,binLen:4*u.length+a}}(t,i,s,n)};case"TEXT":return function(t,i,s){return function(u,c,a,l,d){let h,f,g,p,m,A,y,b,S=0;const H=a||[0],U=(l=l||0)>>>3;if(c==="UTF8")for(y=d===-1?3:0,g=0;g<u.length;g+=1)for(h=u.charCodeAt(g),f=[],128>h?f.push(h):2048>h?(f.push(192|h>>>6),f.push(128|63&h)):55296>h||57344<=h?f.push(224|h>>>12,128|h>>>6&63,128|63&h):(g+=1,h=65536+((1023&h)<<10|1023&u.charCodeAt(g)),f.push(240|h>>>18,128|h>>>12&63,128|h>>>6&63,128|63&h)),p=0;p<f.length;p+=1){for(A=S+U,m=A>>>2;H.length<=m;)H.push(0);H[m]|=f[p]<<8*(y+d*(A%4)),S+=1}else 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T,algorithm:s=E.defaults.algorithm,digits:u=E.defaults.digits,counter:c=E.defaults.counter}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.counter=c}static generate({secret:e,algorithm:n=E.defaults.algorithm,digits:t=E.defaults.digits,counter:i=E.defaults.counter}){const s=new Uint8Array(ze(n,e.buffer,P(i))),u=s[s.byteLength-1]&15;return(((s[u]&127)<<24|(s[u+1]&255)<<16|(s[u+2]&255)<<8|s[u+3]&255)%tt(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return E.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:n,algorithm:t,digits:i,counter:s=E.defaults.counter,window:u=E.defaults.window}){if(e.length!==i)return null;let c=null;for(let a=s-u;a<=s+u;++a){const l=E.generate({secret:n,algorithm:t,digits:i,counter:a});et(e,l)&&(c=a-s)}return c}validate({token:e,counter:n=this.counter,window:t}){return E.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class N{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=N.defaults.issuer,label:n=N.defaults.label,issuerInLabel:t=N.defaults.issuerInLabel,secret:i=new T,algorithm:s=N.defaults.algorithm,digits:u=N.defaults.digits,period:c=N.defaults.period}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.period=c}static generate({secret:e,algorithm:n,digits:t,period:i=N.defaults.period,timestamp:s=Date.now()}){return j.generate({secret:e,algorithm:n,digits:t,counter:Math.floor(s/1e3/i)})}generate({timestamp:e=Date.now()}={}){return N.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:n,algorithm:t,digits:i,period:s=N.defaults.period,timestamp:u=Date.now(),window:c}){return j.validate({token:e,secret:n,algorithm:t,digits:i,counter:Math.floor(u/1e3/s),window:c})}validate({token:e,timestamp:n,window:t}){return N.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const nt=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,rt=/^[2-7A-Z]+=*$/i,it=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,st=/^[+-]?\d+$/,Ie=/^\+?[1-9]\d*$/;class ot{static parse(e){let n;try{n=e.match(nt)}catch(a){}if(!Array.isArray(n))throw new URIError("Invalid URI format");const t=n[1].toLowerCase(),i=n[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),s=n[3].split("&").reduce((a,l)=>{const d=l.split(/=(.*)/,2).map(decodeURIComponent),h=d[0].toLowerCase(),f=d[1],g=a;return g[h]=f,g},{});let u;const c={};if(t==="hotp")if(u=j,typeof s.counter!="undefined"&&st.test(s.counter))c.counter=parseInt(s.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(u=N,typeof s.period!="undefined")if(Ie.test(s.period))c.period=parseInt(s.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof s.issuer!="undefined"&&(c.issuer=s.issuer),i.length===2?(c.label=i[1],typeof c.issuer=="undefined"||c.issuer===""?c.issuer=i[0]:i[0]===""&&(c.issuerInLabel=!1)):(c.label=i[0],typeof c.issuer!="undefined"&&c.issuer!==""&&(c.issuerInLabel=!1)),typeof s.secret!="undefined"&&rt.test(s.secret))c.secret=s.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof s.algorithm!="undefined")if(it.test(s.algorithm))c.algorithm=s.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof s.digits!="undefined")if(Ie.test(s.digits))c.digits=parseInt(s.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new u(c)}static stringify(e){if(e instanceof j||e instanceof N)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const ut="9.2.3";C.HOTP=j,C.Secret=T,C.TOTP=N,C.URI=ot,C.version=ut});
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p=c||[0],m=(a=a||0)>>>3,A=l===-1?3:0;for(h=0;h<u.length;h+=1)d=u.charCodeAt(h),g=h+m,f=g>>>2,p.length<=f&&p.push(0),p[f]|=d<<8*(A+l*(g%4));return{value:p,binLen:8*u.length+a}}(t,i,s,n)};case"ARRAYBUFFER":try{new ArrayBuffer(0)}catch(t){throw new Error(_)}return function(t,i,s){return function(u,c,a,l){return te(new Uint8Array(u),c,a,l)}(t,i,s,n)};case"UINT8ARRAY":try{new Uint8Array(0)}catch(t){throw new Error(ee)}return function(t,i,s){return te(t,i,s,n)};default:throw new Error("format must be HEX, TEXT, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY")}}function ne(r,e,n,t){switch(r){case"HEX":return function(i){return function(s,u,c,a){const l="0123456789abcdef";let d,h,f="";const g=u/8,p=c===-1?3:0;for(d=0;d<g;d+=1)h=s[d>>>2]>>>8*(p+c*(d%4)),f+=l.charAt(h>>>4&15)+l.charAt(15&h);return a.outputUpper?f.toUpperCase():f}(i,e,n,t)};case"B64":return function(i){return function(s,u,c,a){let l,d,h,f,g,p="";const 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t=je[r.toUpperCase()];if(typeof t=="undefined")throw new TypeError("Unknown hash function");const i=new Xe(t,"ARRAYBUFFER");return i.setHMACKey(e,"ARRAYBUFFER"),i.update(n),i.getHMAC("ARRAYBUFFER")}},Q="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",De=r=>{let e=r.length;for(;r[e-1]==="=";)--e;const n=(e<r.length?r.substring(0,e):r).toUpperCase(),t=new ArrayBuffer(n.length*5/8|0),i=new Uint8Array(t);let s=0,u=0,c=0;for(let a=0;a<n.length;a++){const l=Q.indexOf(n[a]);if(l===-1)throw new TypeError(`Invalid character found: ${n[a]}`);u=u<<5|l,s+=5,s>=8&&(s-=8,i[c++]=u>>>s)}return t},qe=r=>{const e=new Uint8Array(r);let n=0,t=0,i="";for(let s=0;s<e.length;s++)for(t=t<<8|e[s],n+=8;n>=5;)i+=Q[t>>>n-5&31],n-=5;return n>0&&(i+=Q[t<<5-n&31]),i},Ge=r=>{const e=new ArrayBuffer(r.length/2),n=new Uint8Array(e);for(let t=0;t<r.length;t+=2)n[t/2]=parseInt(r.substring(t,t+2),16);return e},Ze=r=>{const e=new Uint8Array(r);let n="";for(let t=0;t<e.length;t++){const i=e[t].toString(16);i.length===1&&(n+="0"),n+=i}return n.toUpperCase()},Ve=r=>{const e=new ArrayBuffer(r.length),n=new Uint8Array(e);for(let t=0;t<r.length;t++)n[t]=r.charCodeAt(t)&255;return e},Je=r=>{const e=new Uint8Array(r);let n="";for(let t=0;t<e.length;t++)n+=String.fromCharCode(e[t]);return n},Ae=k.TextEncoder?new k.TextEncoder("utf-8"):null,be=k.TextDecoder?new k.TextDecoder("utf-8"):null,Qe=r=>{if(!Ae)throw new Error("Encoding API not available");return Ae.encode(r).buffer},We=r=>{if(!be)throw new Error("Encoding API not available");return be.decode(r)},_e=r=>{var e;if(Z!=null,!((e=k.crypto)!=null&&e.getRandomValues))throw new Error("Cryptography API not available");return k.crypto.getRandomValues(new Uint8Array(r)).buffer};class T{constructor({buffer:e,size:n=20}={}){this.buffer=typeof e=="undefined"?_e(n):e}static fromLatin1(e){return new T({buffer:Ve(e)})}static fromUTF8(e){return new T({buffer:Qe(e)})}static fromBase32(e){return new T({buffer:De(e)})}static fromHex(e){return new T({buffer:Ge(e)})}get latin1(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:Je(this.buffer)}),this.latin1}get utf8(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:We(this.buffer)}),this.utf8}get base32(){return Object.defineProperty(this,"base32",{enumerable:!0,value:qe(this.buffer)}),this.base32}get hex(){return Object.defineProperty(this,"hex",{enumerable:!0,value:Ze(this.buffer)}),this.hex}}const et=(r,e)=>{Z!=null;{if(r.length!==e.length)throw new TypeError("Input strings must have the same length");let n=-1,t=0;for(;++n<r.length;)t|=r.charCodeAt(n)^e.charCodeAt(n);return t===0}};var tt=Math.pow;let j=class E{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,counter:0,window:1}}constructor({issuer:e=E.defaults.issuer,label:n=E.defaults.label,issuerInLabel:t=E.defaults.issuerInLabel,secret:i=new T,algorithm:s=E.defaults.algorithm,digits:u=E.defaults.digits,counter:c=E.defaults.counter}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.counter=c}static generate({secret:e,algorithm:n=E.defaults.algorithm,digits:t=E.defaults.digits,counter:i=E.defaults.counter}){const s=new Uint8Array(ze(n,e.buffer,P(i))),u=s[s.byteLength-1]&15;return(((s[u]&127)<<24|(s[u+1]&255)<<16|(s[u+2]&255)<<8|s[u+3]&255)%tt(10,t)).toString().padStart(t,"0")}generate({counter:e=this.counter++}={}){return E.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:e})}static validate({token:e,secret:n,algorithm:t,digits:i,counter:s=E.defaults.counter,window:u=E.defaults.window}){if(e.length!==i)return null;let c=null;const a=l=>{const d=E.generate({secret:n,algorithm:t,digits:i,counter:l});et(e,d)&&(c=l-s)};a(s);for(let l=1;l<=u&&c===null&&(a(s-l),!(c!==null||(a(s+l),c!==null)));++l);return c}validate({token:e,counter:n=this.counter,window:t}){return E.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://hotp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&counter=${e(this.counter)}`}};class N{static get defaults(){return{issuer:"",label:"OTPAuth",issuerInLabel:!0,algorithm:"SHA1",digits:6,period:30,window:1}}constructor({issuer:e=N.defaults.issuer,label:n=N.defaults.label,issuerInLabel:t=N.defaults.issuerInLabel,secret:i=new T,algorithm:s=N.defaults.algorithm,digits:u=N.defaults.digits,period:c=N.defaults.period}={}){this.issuer=e,this.label=n,this.issuerInLabel=t,this.secret=typeof i=="string"?T.fromBase32(i):i,this.algorithm=s.toUpperCase(),this.digits=u,this.period=c}static generate({secret:e,algorithm:n,digits:t,period:i=N.defaults.period,timestamp:s=Date.now()}){return j.generate({secret:e,algorithm:n,digits:t,counter:Math.floor(s/1e3/i)})}generate({timestamp:e=Date.now()}={}){return N.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:e})}static validate({token:e,secret:n,algorithm:t,digits:i,period:s=N.defaults.period,timestamp:u=Date.now(),window:c}){return j.validate({token:e,secret:n,algorithm:t,digits:i,counter:Math.floor(u/1e3/s),window:c})}validate({token:e,timestamp:n,window:t}){return N.validate({token:e,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:n,window:t})}toString(){const e=encodeURIComponent;return`otpauth://totp/${this.issuer.length>0?this.issuerInLabel?`${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?issuer=${e(this.issuer)}&`:`${e(this.label)}?`}secret=${e(this.secret.base32)}&algorithm=${e(this.algorithm)}&digits=${e(this.digits)}&period=${e(this.period)}`}}const nt=/^otpauth:\/\/([ht]otp)\/(.+)\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i,rt=/^[2-7A-Z]+=*$/i,it=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,st=/^[+-]?\d+$/,Ie=/^\+?[1-9]\d*$/;class ot{static parse(e){let n;try{n=e.match(nt)}catch(a){}if(!Array.isArray(n))throw new URIError("Invalid URI format");const t=n[1].toLowerCase(),i=n[2].split(/(?::|%3A) *(.+)/i,2).map(decodeURIComponent),s=n[3].split("&").reduce((a,l)=>{const d=l.split(/=(.*)/,2).map(decodeURIComponent),h=d[0].toLowerCase(),f=d[1],g=a;return g[h]=f,g},{});let u;const c={};if(t==="hotp")if(u=j,typeof s.counter!="undefined"&&st.test(s.counter))c.counter=parseInt(s.counter,10);else throw new TypeError("Missing or invalid 'counter' parameter");else if(t==="totp"){if(u=N,typeof s.period!="undefined")if(Ie.test(s.period))c.period=parseInt(s.period,10);else throw new TypeError("Invalid 'period' parameter")}else throw new TypeError("Unknown OTP type");if(typeof s.issuer!="undefined"&&(c.issuer=s.issuer),i.length===2?(c.label=i[1],typeof c.issuer=="undefined"||c.issuer===""?c.issuer=i[0]:i[0]===""&&(c.issuerInLabel=!1)):(c.label=i[0],typeof c.issuer!="undefined"&&c.issuer!==""&&(c.issuerInLabel=!1)),typeof s.secret!="undefined"&&rt.test(s.secret))c.secret=s.secret;else throw new TypeError("Missing or invalid 'secret' parameter");if(typeof s.algorithm!="undefined")if(it.test(s.algorithm))c.algorithm=s.algorithm;else throw new TypeError("Invalid 'algorithm' parameter");if(typeof s.digits!="undefined")if(Ie.test(s.digits))c.digits=parseInt(s.digits,10);else throw new TypeError("Invalid 'digits' parameter");return new u(c)}static stringify(e){if(e instanceof j||e instanceof N)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}const ut="9.2.4";C.HOTP=j,C.Secret=T,C.TOTP=N,C.URI=ot,C.version=ut});
 //# sourceMappingURL=otpauth.umd.min.js.map
diff --git a/dist/otpauth.umd.min.js.map b/dist/otpauth.umd.min.js.map
index c6caf29..b12be8a 100644
--- a/dist/otpauth.umd.min.js.map
+++ b/dist/otpauth.umd.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"otpauth.umd.min.js","sources":["../src/utils/encoding/uint.js","../node_modules/jssha/dist/sha.mjs","../src/utils/global-scope.js","../src/utils/crypto/hmac-digest.js","../src/utils/encoding/base32.js","../src/utils/encoding/hex.js","../src/utils/encoding/latin1.js","../src/utils/encoding/utf8.js","../src/utils/crypto/random-bytes.js","../src/secret.js","../src/utils/crypto/timing-safe-equal.js","../src/hotp.js","../src/totp.js","../src/uri.js","../src/version.js"],"sourcesContent":["/**\n * Converts an integer to an ArrayBuffer.\n * @param {number} num Integer.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst uintToBuf = (num) => {\n  const buf = new ArrayBuffer(8);\n  const arr = new Uint8Array(buf);\n  let acc = num;\n\n  for (let i = 7; i >= 0; i--) {\n    if (acc === 0) break;\n    arr[i] = acc & 255;\n    acc -= arr[i];\n    acc /= 256;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to an integer.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {number} Integer.\n */\nconst uintFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let num = 0;\n\n  for (let i = 0; i < arr.length; i++) {\n    if (arr[i] !== 0) {\n      num *= 256;\n      num += arr[i];\n    }\n  }\n\n  return num;\n};\n\nexport { uintToBuf, uintFromBuf };\n","/**\n * A JavaScript implementation of the SHA family of hashes - defined in FIPS PUB 180-4, FIPS PUB 202,\n * and SP 800-185 - as well as the corresponding HMAC implementation as defined in FIPS PUB 198-1.\n *\n * Copyright 2008-2023 Brian Turek, 1998-2009 Paul Johnston & Contributors\n * Distributed under the BSD License\n * See http://caligatio.github.com/jsSHA/ for more information\n */\nconst t=\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\",n=\"ARRAYBUFFER not supported by this environment\",e=\"UINT8ARRAY not supported by this environment\";function r(t,n,e,r){let i,s,o;const h=n||[0],u=(e=e||0)>>>3,w=-1===r?3:0;for(i=0;i<t.length;i+=1)o=i+u,s=o>>>2,h.length<=s&&h.push(0),h[s]|=t[i]<<8*(w+r*(o%4));return{value:h,binLen:8*t.length+e}}function i(i,s,o){switch(s){case\"UTF8\":case\"UTF16BE\":case\"UTF16LE\":break;default:throw new Error(\"encoding must be UTF8, UTF16BE, or UTF16LE\")}switch(i){case\"HEX\":return function(t,n,e){return function(t,n,e,r){let i,s,o,h;if(0!=t.length%2)throw new Error(\"String of HEX type must be in byte increments\");const u=n||[0],w=(e=e||0)>>>3,c=-1===r?3:0;for(i=0;i<t.length;i+=2){if(s=parseInt(t.substr(i,2),16),isNaN(s))throw new Error(\"String of HEX type contains invalid characters\");for(h=(i>>>1)+w,o=h>>>2;u.length<=o;)u.push(0);u[o]|=s<<8*(c+r*(h%4))}return{value:u,binLen:4*t.length+e}}(t,n,e,o)};case\"TEXT\":return function(t,n,e){return function(t,n,e,r,i){let s,o,h,u,w,c,f,a,l=0;const A=e||[0],E=(r=r||0)>>>3;if(\"UTF8\"===n)for(f=-1===i?3:0,h=0;h<t.length;h+=1)for(s=t.charCodeAt(h),o=[],128>s?o.push(s):2048>s?(o.push(192|s>>>6),o.push(128|63&s)):55296>s||57344<=s?o.push(224|s>>>12,128|s>>>6&63,128|63&s):(h+=1,s=65536+((1023&s)<<10|1023&t.charCodeAt(h)),o.push(240|s>>>18,128|s>>>12&63,128|s>>>6&63,128|63&s)),u=0;u<o.length;u+=1){for(c=l+E,w=c>>>2;A.length<=w;)A.push(0);A[w]|=o[u]<<8*(f+i*(c%4)),l+=1}else for(f=-1===i?2:0,a=\"UTF16LE\"===n&&1!==i||\"UTF16LE\"!==n&&1===i,h=0;h<t.length;h+=1){for(s=t.charCodeAt(h),!0===a&&(u=255&s,s=u<<8|s>>>8),c=l+E,w=c>>>2;A.length<=w;)A.push(0);A[w]|=s<<8*(f+i*(c%4)),l+=2}return{value:A,binLen:8*l+r}}(t,s,n,e,o)};case\"B64\":return function(n,e,r){return function(n,e,r,i){let s,o,h,u,w,c,f,a=0;const l=e||[0],A=(r=r||0)>>>3,E=-1===i?3:0,H=n.indexOf(\"=\");if(-1===n.search(/^[a-zA-Z0-9=+/]+$/))throw new Error(\"Invalid character in base-64 string\");if(n=n.replace(/=/g,\"\"),-1!==H&&H<n.length)throw new Error(\"Invalid '=' found in base-64 string\");for(o=0;o<n.length;o+=4){for(w=n.substr(o,4),u=0,h=0;h<w.length;h+=1)s=t.indexOf(w.charAt(h)),u|=s<<18-6*h;for(h=0;h<w.length-1;h+=1){for(f=a+A,c=f>>>2;l.length<=c;)l.push(0);l[c]|=(u>>>16-8*h&255)<<8*(E+i*(f%4)),a+=1}}return{value:l,binLen:8*a+r}}(n,e,r,o)};case\"BYTES\":return function(t,n,e){return function(t,n,e,r){let i,s,o,h;const u=n||[0],w=(e=e||0)>>>3,c=-1===r?3:0;for(s=0;s<t.length;s+=1)i=t.charCodeAt(s),h=s+w,o=h>>>2,u.length<=o&&u.push(0),u[o]|=i<<8*(c+r*(h%4));return{value:u,binLen:8*t.length+e}}(t,n,e,o)};case\"ARRAYBUFFER\":try{new ArrayBuffer(0)}catch(t){throw new Error(n)}return function(t,n,e){return function(t,n,e,i){return r(new Uint8Array(t),n,e,i)}(t,n,e,o)};case\"UINT8ARRAY\":try{new Uint8Array(0)}catch(t){throw new Error(e)}return function(t,n,e){return r(t,n,e,o)};default:throw new Error(\"format must be HEX, TEXT, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY\")}}function s(r,i,s,o){switch(r){case\"HEX\":return function(t){return function(t,n,e,r){const i=\"0123456789abcdef\";let s,o,h=\"\";const u=n/8,w=-1===e?3:0;for(s=0;s<u;s+=1)o=t[s>>>2]>>>8*(w+e*(s%4)),h+=i.charAt(o>>>4&15)+i.charAt(15&o);return r.outputUpper?h.toUpperCase():h}(t,i,s,o)};case\"B64\":return function(n){return function(n,e,r,i){let s,o,h,u,w,c=\"\";const f=e/8,a=-1===r?3:0;for(s=0;s<f;s+=3)for(u=s+1<f?n[s+1>>>2]:0,w=s+2<f?n[s+2>>>2]:0,h=(n[s>>>2]>>>8*(a+r*(s%4))&255)<<16|(u>>>8*(a+r*((s+1)%4))&255)<<8|w>>>8*(a+r*((s+2)%4))&255,o=0;o<4;o+=1)c+=8*s+6*o<=e?t.charAt(h>>>6*(3-o)&63):i.b64Pad;return c}(n,i,s,o)};case\"BYTES\":return function(t){return function(t,n,e){let r,i,s=\"\";const o=n/8,h=-1===e?3:0;for(r=0;r<o;r+=1)i=t[r>>>2]>>>8*(h+e*(r%4))&255,s+=String.fromCharCode(i);return s}(t,i,s)};case\"ARRAYBUFFER\":try{new ArrayBuffer(0)}catch(t){throw new Error(n)}return function(t){return function(t,n,e){let r;const i=n/8,s=new ArrayBuffer(i),o=new Uint8Array(s),h=-1===e?3:0;for(r=0;r<i;r+=1)o[r]=t[r>>>2]>>>8*(h+e*(r%4))&255;return s}(t,i,s)};case\"UINT8ARRAY\":try{new Uint8Array(0)}catch(t){throw new Error(e)}return function(t){return function(t,n,e){let r;const i=n/8,s=-1===e?3:0,o=new Uint8Array(i);for(r=0;r<i;r+=1)o[r]=t[r>>>2]>>>8*(s+e*(r%4))&255;return o}(t,i,s)};default:throw new Error(\"format must be HEX, B64, BYTES, ARRAYBUFFER, or UINT8ARRAY\")}}const o=4294967296,h=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298],u=[3238371032,914150663,812702999,4144912697,4290775857,1750603025,1694076839,3204075428],w=[1779033703,3144134277,1013904242,2773480762,1359893119,2600822924,528734635,1541459225],c=\"Chosen SHA variant is not supported\",f=\"Cannot set numRounds with MAC\";function a(t,n){let e,r;const i=t.binLen>>>3,s=n.binLen>>>3,o=i<<3,h=4-i<<3;if(i%4!=0){for(e=0;e<s;e+=4)r=i+e>>>2,t.value[r]|=n.value[e>>>2]<<o,t.value.push(0),t.value[r+1]|=n.value[e>>>2]>>>h;return(t.value.length<<2)-4>=s+i&&t.value.pop(),{value:t.value,binLen:t.binLen+n.binLen}}return{value:t.value.concat(n.value),binLen:t.binLen+n.binLen}}function l(t){const n={outputUpper:!1,b64Pad:\"=\",outputLen:-1},e=t||{},r=\"Output length must be a multiple of 8\";if(n.outputUpper=e.outputUpper||!1,e.b64Pad&&(n.b64Pad=e.b64Pad),e.outputLen){if(e.outputLen%8!=0)throw new Error(r);n.outputLen=e.outputLen}else if(e.shakeLen){if(e.shakeLen%8!=0)throw new Error(r);n.outputLen=e.shakeLen}if(\"boolean\"!=typeof n.outputUpper)throw new Error(\"Invalid outputUpper formatting option\");if(\"string\"!=typeof n.b64Pad)throw new Error(\"Invalid b64Pad formatting option\");return n}function A(t,n,e,r){const s=t+\" must include a value and format\";if(!n){if(!r)throw new Error(s);return r}if(void 0===n.value||!n.format)throw new 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set numRounds for CSHAKE variants\")}switch(this.T=1,this.C=i(this.t,this.i,this.T),this.v=et,this.L=nt,this.B=tt,this.U=tt(),this.K=!1,t){case\"SHA3-224\":this.m=s=1152,this.R=224,this.M=!0,this.g=this.Y;break;case\"SHA3-256\":this.m=s=1088,this.R=256,this.M=!0,this.g=this.Y;break;case\"SHA3-384\":this.m=s=832,this.R=384,this.M=!0,this.g=this.Y;break;case\"SHA3-512\":this.m=s=576,this.R=512,this.M=!0,this.g=this.Y;break;case\"SHAKE128\":r=31,this.m=s=1344,this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"SHAKE256\":r=31,this.m=s=1088,this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"KMAC128\":r=4,this.m=s=1344,this.X(e),this.R=-1,this.K=!0,this.M=!1,this.g=this._;break;case\"KMAC256\":r=4,this.m=s=1088,this.X(e),this.R=-1,this.K=!0,this.M=!1,this.g=this._;break;case\"CSHAKE128\":this.m=s=1344,r=this.O(e),this.R=-1,this.K=!0,this.M=!1,this.g=null;break;case\"CSHAKE256\":this.m=s=1088,r=this.O(e),this.R=-1,this.K=!0,this.M=!1,this.g=null;break;default:throw new Error(c)}this.F=function(t,n,e,i,o){return function(t,n,e,r,i,s,o){let h,u,w=0;const c=[],f=i>>>5,a=n>>>5;for(h=0;h<a&&n>=i;h+=f)r=et(t.slice(h,h+f),r),n-=i;for(t=t.slice(h),n%=i;t.length<f;)t.push(0);for(h=n>>>3,t[h>>2]^=s<<h%4*8,t[f-1]^=2147483648,r=et(t,r);32*c.length<o&&(u=r[w%5][w/5|0],c.push(u.I),!(32*c.length>=o));)c.push(u.N),w+=1,0==64*w%i&&(et(null,r),w=0);return c}(t,n,0,i,s,r,o)},o.hmacKey&&this.k(A(\"hmacKey\",o.hmacKey,this.T))}O(t,n){const e=function(t){const n=t||{};return{funcName:A(\"funcName\",n.funcName,1,{value:[],binLen:0}),customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});n&&(e.funcName=n);const r=a(it(e.funcName),it(e.customization));if(0!==e.customization.binLen||0!==e.funcName.binLen){const t=st(r,this.m>>>3);for(let n=0;n<t.length;n+=this.m>>>5)this.U=this.v(t.slice(n,n+(this.m>>>5)),this.U),this.A+=this.m;return 4}return 31}X(t){const n=function(t){const n=t||{};return{kmacKey:A(\"kmacKey\",n.kmacKey,1),funcName:{value:[1128353099],binLen:32},customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});this.O(t,n.funcName);const e=st(it(n.kmacKey),this.m>>>3);for(let t=0;t<e.length;t+=this.m>>>5)this.U=this.v(e.slice(t,t+(this.m>>>5)),this.U),this.A+=this.m;this.H=!0}_(t){const n=a({value:this.h.slice(),binLen:this.u},function(t){let n,e,r=0;const i=[0,0],s=[4294967295&t,t/o&2097151];for(n=6;n>=0;n--)e=s[n>>2]>>>8*n&255,0===e&&0===r||(i[r>>2]|=e<<8*r,r+=1);return r=0!==r?r:1,i[r>>2]|=r<<8*r,{value:r+1>4?i:[i[0]],binLen:8+8*r}}(t.outputLen));return this.F(n.value,n.binLen,this.A,this.L(this.U),t.outputLen)}};class ht{constructor(t,n,e){if(\"SHA-1\"==t)this.P=new L(t,n,e);else if(\"SHA-224\"==t||\"SHA-256\"==t)this.P=new k(t,n,e);else if(\"SHA-384\"==t||\"SHA-512\"==t)this.P=new Q(t,n,e);else{if(\"SHA3-224\"!=t&&\"SHA3-256\"!=t&&\"SHA3-384\"!=t&&\"SHA3-512\"!=t&&\"SHAKE128\"!=t&&\"SHAKE256\"!=t&&\"CSHAKE128\"!=t&&\"CSHAKE256\"!=t&&\"KMAC128\"!=t&&\"KMAC256\"!=t)throw new Error(c);this.P=new ot(t,n,e)}}update(t){return this.P.update(t),this}getHash(t,n){return this.P.getHash(t,n)}setHMACKey(t,n,e){this.P.setHMACKey(t,n,e)}getHMAC(t,n){return this.P.getHMAC(t,n)}}export{ht as default};\n//# sourceMappingURL=sha.mjs.map\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    for (let i = counter - window; i <= counter + window; ++i) {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n    } catch (error) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== 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Error(c)}this.F=function(t,n,e,i,o){return function(t,n,e,r,i,s,o){let h,u,w=0;const c=[],f=i>>>5,a=n>>>5;for(h=0;h<a&&n>=i;h+=f)r=et(t.slice(h,h+f),r),n-=i;for(t=t.slice(h),n%=i;t.length<f;)t.push(0);for(h=n>>>3,t[h>>2]^=s<<h%4*8,t[f-1]^=2147483648,r=et(t,r);32*c.length<o&&(u=r[w%5][w/5|0],c.push(u.I),!(32*c.length>=o));)c.push(u.N),w+=1,0==64*w%i&&(et(null,r),w=0);return c}(t,n,0,i,s,r,o)},o.hmacKey&&this.k(A(\"hmacKey\",o.hmacKey,this.T))}O(t,n){const e=function(t){const n=t||{};return{funcName:A(\"funcName\",n.funcName,1,{value:[],binLen:0}),customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});n&&(e.funcName=n);const r=a(it(e.funcName),it(e.customization));if(0!==e.customization.binLen||0!==e.funcName.binLen){const t=st(r,this.m>>>3);for(let n=0;n<t.length;n+=this.m>>>5)this.U=this.v(t.slice(n,n+(this.m>>>5)),this.U),this.A+=this.m;return 4}return 31}X(t){const n=function(t){const n=t||{};return{kmacKey:A(\"kmacKey\",n.kmacKey,1),funcName:{value:[1128353099],binLen:32},customization:A(\"Customization\",n.customization,1,{value:[],binLen:0})}}(t||{});this.O(t,n.funcName);const e=st(it(n.kmacKey),this.m>>>3);for(let t=0;t<e.length;t+=this.m>>>5)this.U=this.v(e.slice(t,t+(this.m>>>5)),this.U),this.A+=this.m;this.H=!0}_(t){const n=a({value:this.h.slice(),binLen:this.u},function(t){let n,e,r=0;const i=[0,0],s=[4294967295&t,t/o&2097151];for(n=6;n>=0;n--)e=s[n>>2]>>>8*n&255,0===e&&0===r||(i[r>>2]|=e<<8*r,r+=1);return r=0!==r?r:1,i[r>>2]|=r<<8*r,{value:r+1>4?i:[i[0]],binLen:8+8*r}}(t.outputLen));return this.F(n.value,n.binLen,this.A,this.L(this.U),t.outputLen)}};class ht{constructor(t,n,e){if(\"SHA-1\"==t)this.P=new L(t,n,e);else if(\"SHA-224\"==t||\"SHA-256\"==t)this.P=new k(t,n,e);else if(\"SHA-384\"==t||\"SHA-512\"==t)this.P=new Q(t,n,e);else{if(\"SHA3-224\"!=t&&\"SHA3-256\"!=t&&\"SHA3-384\"!=t&&\"SHA3-512\"!=t&&\"SHAKE128\"!=t&&\"SHAKE256\"!=t&&\"CSHAKE128\"!=t&&\"CSHAKE256\"!=t&&\"KMAC128\"!=t&&\"KMAC256\"!=t)throw new Error(c);this.P=new ot(t,n,e)}}update(t){return this.P.update(t),this}getHash(t,n){return this.P.getHash(t,n)}setHMACKey(t,n,e){this.P.setHMACKey(t,n,e)}getHMAC(t,n){return this.P.getHMAC(t,n)}}export{ht as default};\n//# sourceMappingURL=sha.mjs.map\n","/**\n * \"globalThis\" ponyfill.\n * @see [A horrifying globalThis polyfill in universal JavaScript](https://mathiasbynens.be/notes/globalthis)\n * @type {Object.<string, *>}\n */\nconst globalScope = (() => {\n  if (typeof globalThis === \"object\") return globalThis;\n  else {\n    Object.defineProperty(Object.prototype, \"__GLOBALTHIS__\", {\n      get() {\n        return this;\n      },\n      configurable: true,\n    });\n    try {\n      // @ts-ignore\n      // eslint-disable-next-line no-undef\n      if (typeof __GLOBALTHIS__ !== \"undefined\") return __GLOBALTHIS__;\n    } finally {\n      // @ts-ignore\n      delete Object.prototype.__GLOBALTHIS__;\n    }\n  }\n\n  // Still unable to determine \"globalThis\", fall back to a naive method.\n  if (typeof self !== \"undefined\") return self;\n  else if (typeof window !== \"undefined\") return window;\n  else if (typeof global !== \"undefined\") return global;\n\n  return undefined;\n})();\n\nexport { globalScope };\n","import * as crypto from \"node:crypto\";\nimport jsSHA from \"jssha\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * OpenSSL to jsSHA algorithms map.\n * @type {Object.<string, \"SHA-1\"|\"SHA-224\"|\"SHA-256\"|\"SHA-384\"|\"SHA-512\"|\"SHA3-224\"|\"SHA3-256\"|\"SHA3-384\"|\"SHA3-512\">}\n */\nconst OPENSSL_JSSHA_ALGO_MAP = {\n  SHA1: \"SHA-1\",\n  SHA224: \"SHA-224\",\n  SHA256: \"SHA-256\",\n  SHA384: \"SHA-384\",\n  SHA512: \"SHA-512\",\n  \"SHA3-224\": \"SHA3-224\",\n  \"SHA3-256\": \"SHA3-256\",\n  \"SHA3-384\": \"SHA3-384\",\n  \"SHA3-512\": \"SHA3-512\",\n};\n\n/**\n * Calculates an HMAC digest.\n * In Node.js, the command \"openssl list -digest-algorithms\" displays the available digest algorithms.\n * @param {string} algorithm Algorithm.\n * @param {ArrayBuffer} key Key.\n * @param {ArrayBuffer} message Message.\n * @returns {ArrayBuffer} Digest.\n */\nconst hmacDigest = (algorithm, key, message) => {\n  if (crypto?.createHmac) {\n    const hmac = crypto.createHmac(algorithm, globalScope.Buffer.from(key));\n    hmac.update(globalScope.Buffer.from(message));\n    return hmac.digest().buffer;\n  } else {\n    const variant = OPENSSL_JSSHA_ALGO_MAP[algorithm.toUpperCase()];\n    if (typeof variant === \"undefined\") {\n      throw new TypeError(\"Unknown hash function\");\n    }\n    const hmac = new jsSHA(variant, \"ARRAYBUFFER\");\n    hmac.setHMACKey(key, \"ARRAYBUFFER\");\n    hmac.update(message);\n    return hmac.getHMAC(\"ARRAYBUFFER\");\n  }\n};\n\nexport { hmacDigest };\n","/**\n * RFC 4648 base32 alphabet without pad.\n * @type {string}\n */\nconst ALPHABET = \"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567\";\n\n/**\n * Converts a base32 string to an ArrayBuffer (RFC 4648).\n * @see [LinusU/base32-decode](https://github.com/LinusU/base32-decode)\n * @param {string} str Base32 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst base32ToBuf = (str) => {\n  // Canonicalize to all upper case and remove padding if it exists.\n  let end = str.length;\n  while (str[end - 1] === \"=\") --end;\n  const cstr = (end < str.length ? str.substring(0, end) : str).toUpperCase();\n\n  const buf = new ArrayBuffer(((cstr.length * 5) / 8) | 0);\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let index = 0;\n\n  for (let i = 0; i < cstr.length; i++) {\n    const idx = ALPHABET.indexOf(cstr[i]);\n    if (idx === -1) throw new TypeError(`Invalid character found: ${cstr[i]}`);\n\n    value = (value << 5) | idx;\n    bits += 5;\n\n    if (bits >= 8) {\n      bits -= 8;\n      arr[index++] = value >>> bits;\n    }\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a base32 string (RFC 4648).\n * @see [LinusU/base32-encode](https://github.com/LinusU/base32-encode)\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Base32 string.\n */\nconst base32FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let bits = 0;\n  let value = 0;\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    value = (value << 8) | arr[i];\n    bits += 8;\n\n    while (bits >= 5) {\n      str += ALPHABET[(value >>> (bits - 5)) & 31];\n      bits -= 5;\n    }\n  }\n\n  if (bits > 0) {\n    str += ALPHABET[(value << (5 - bits)) & 31];\n  }\n\n  return str;\n};\n\nexport { base32ToBuf, base32FromBuf };\n","/**\n * Converts a hexadecimal string to an ArrayBuffer.\n * @param {string} str Hexadecimal string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst hexToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length / 2);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i += 2) {\n    arr[i / 2] = parseInt(str.substring(i, i + 2), 16);\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a hexadecimal string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Hexadecimal string.\n */\nconst hexFromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    const hex = arr[i].toString(16);\n    if (hex.length === 1) str += \"0\";\n    str += hex;\n  }\n\n  return str.toUpperCase();\n};\n\nexport { hexToBuf, hexFromBuf };\n","/**\n * Converts a Latin-1 string to an ArrayBuffer.\n * @param {string} str Latin-1 string.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst latin1ToBuf = (str) => {\n  const buf = new ArrayBuffer(str.length);\n  const arr = new Uint8Array(buf);\n\n  for (let i = 0; i < str.length; i++) {\n    arr[i] = str.charCodeAt(i) & 0xff;\n  }\n\n  return buf;\n};\n\n/**\n * Converts an ArrayBuffer to a Latin-1 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} Latin-1 string.\n */\nconst latin1FromBuf = (buf) => {\n  const arr = new Uint8Array(buf);\n  let str = \"\";\n\n  for (let i = 0; i < arr.length; i++) {\n    str += String.fromCharCode(arr[i]);\n  }\n\n  return str;\n};\n\nexport { latin1ToBuf, latin1FromBuf };\n","import { globalScope } from \"../global-scope.js\";\n\n/**\n * TextEncoder instance.\n * @type {TextEncoder|null}\n */\nconst ENCODER = globalScope.TextEncoder\n  ? new globalScope.TextEncoder(\"utf-8\")\n  : null;\n\n/**\n * TextDecoder instance.\n * @type {TextDecoder|null}\n */\nconst DECODER = globalScope.TextDecoder\n  ? new globalScope.TextDecoder(\"utf-8\")\n  : null;\n\n/**\n * Converts an UTF-8 string to an ArrayBuffer.\n * @param {string} str String.\n * @returns {ArrayBuffer} ArrayBuffer.\n */\nconst utf8ToBuf = (str) => {\n  if (!ENCODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return ENCODER.encode(str).buffer;\n};\n\n/**\n * Converts an ArrayBuffer to an UTF-8 string.\n * @param {ArrayBuffer} buf ArrayBuffer.\n * @returns {string} String.\n */\nconst utf8FromBuf = (buf) => {\n  if (!DECODER) {\n    throw new Error(\"Encoding API not available\");\n  }\n\n  return DECODER.decode(buf);\n};\n\nexport { utf8ToBuf, utf8FromBuf };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns random bytes.\n * @param {number} size Size.\n * @returns {ArrayBuffer} Random bytes.\n */\nconst randomBytes = (size) => {\n  if (crypto?.randomBytes) {\n    return crypto.randomBytes(size).buffer;\n  } else {\n    if (!globalScope.crypto?.getRandomValues) {\n      throw new Error(\"Cryptography API not available\");\n    }\n    return globalScope.crypto.getRandomValues(new Uint8Array(size)).buffer;\n  }\n};\n\nexport { randomBytes };\n","import { base32ToBuf, base32FromBuf } from \"./utils/encoding/base32.js\";\nimport { hexToBuf, hexFromBuf } from \"./utils/encoding/hex.js\";\nimport { latin1ToBuf, latin1FromBuf } from \"./utils/encoding/latin1.js\";\nimport { utf8ToBuf, utf8FromBuf } from \"./utils/encoding/utf8.js\";\nimport { randomBytes } from \"./utils/crypto/random-bytes.js\";\n\n/**\n * OTP secret key.\n */\nclass Secret {\n  /**\n   * Creates a secret key object.\n   * @param {Object} [config] Configuration options.\n   * @param {ArrayBuffer} [config.buffer=randomBytes] Secret key.\n   * @param {number} [config.size=20] Number of random bytes to generate, ignored if 'buffer' is provided.\n   */\n  constructor({ buffer, size = 20 } = {}) {\n    /**\n     * Secret key.\n     * @type {ArrayBuffer}\n     */\n    this.buffer = typeof buffer === \"undefined\" ? randomBytes(size) : buffer;\n  }\n\n  /**\n   * Converts a Latin-1 string to a Secret object.\n   * @param {string} str Latin-1 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromLatin1(str) {\n    return new Secret({ buffer: latin1ToBuf(str) });\n  }\n\n  /**\n   * Converts an UTF-8 string to a Secret object.\n   * @param {string} str UTF-8 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromUTF8(str) {\n    return new Secret({ buffer: utf8ToBuf(str) });\n  }\n\n  /**\n   * Converts a base32 string to a Secret object.\n   * @param {string} str Base32 string.\n   * @returns {Secret} Secret object.\n   */\n  static fromBase32(str) {\n    return new Secret({ buffer: base32ToBuf(str) });\n  }\n\n  /**\n   * Converts a hexadecimal string to a Secret object.\n   * @param {string} str Hexadecimal string.\n   * @returns {Secret} Secret object.\n   */\n  static fromHex(str) {\n    return new Secret({ buffer: hexToBuf(str) });\n  }\n\n  /**\n   * Latin-1 string representation of secret key.\n   * @type {string}\n   */\n  get latin1() {\n    Object.defineProperty(this, \"latin1\", {\n      enumerable: true,\n      value: latin1FromBuf(this.buffer),\n    });\n\n    return this.latin1;\n  }\n\n  /**\n   * UTF-8 string representation of secret key.\n   * @type {string}\n   */\n  get utf8() {\n    Object.defineProperty(this, \"utf8\", {\n      enumerable: true,\n      value: utf8FromBuf(this.buffer),\n    });\n\n    return this.utf8;\n  }\n\n  /**\n   * Base32 string representation of secret key.\n   * @type {string}\n   */\n  get base32() {\n    Object.defineProperty(this, \"base32\", {\n      enumerable: true,\n      value: base32FromBuf(this.buffer),\n    });\n\n    return this.base32;\n  }\n\n  /**\n   * Hexadecimal string representation of secret key.\n   * @type {string}\n   */\n  get hex() {\n    Object.defineProperty(this, \"hex\", {\n      enumerable: true,\n      value: hexFromBuf(this.buffer),\n    });\n\n    return this.hex;\n  }\n}\n\nexport { Secret };\n","import * as crypto from \"node:crypto\";\n\nimport { globalScope } from \"../global-scope.js\";\n\n/**\n * Returns true if a is equal to b, without leaking timing information that would allow an attacker to guess one of the values.\n * @param {string} a String a.\n * @param {string} b String b.\n * @returns {boolean} Equality result.\n */\nconst timingSafeEqual = (a, b) => {\n  if (crypto?.timingSafeEqual) {\n    return crypto.timingSafeEqual(\n      globalScope.Buffer.from(a),\n      globalScope.Buffer.from(b),\n    );\n  } else {\n    if (a.length !== b.length) {\n      throw new TypeError(\"Input strings must have the same length\");\n    }\n    let i = -1;\n    let out = 0;\n    while (++i < a.length) {\n      out |= a.charCodeAt(i) ^ b.charCodeAt(i);\n    }\n    return out === 0;\n  }\n};\n\nexport { timingSafeEqual };\n","import { uintToBuf } from \"./utils/encoding/uint.js\";\nimport { hmacDigest } from \"./utils/crypto/hmac-digest.js\";\nimport { Secret } from \"./secret.js\";\nimport { timingSafeEqual } from \"./utils/crypto/timing-safe-equal.js\";\n\n/**\n * HOTP: An HMAC-based One-time Password Algorithm.\n * @see [RFC 4226](https://tools.ietf.org/html/rfc4226)\n */\nclass HOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   counter: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      counter: 0,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates an HOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Initial counter value.\n   */\n  constructor({\n    issuer = HOTP.defaults.issuer,\n    label = HOTP.defaults.label,\n    issuerInLabel = HOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Initial counter value.\n     * @type {number}\n     */\n    this.counter = counter;\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm = HOTP.defaults.algorithm,\n    digits = HOTP.defaults.digits,\n    counter = HOTP.defaults.counter,\n  }) {\n    const digest = new Uint8Array(\n      hmacDigest(algorithm, secret.buffer, uintToBuf(counter)),\n    );\n    const offset = digest[digest.byteLength - 1] & 15;\n    const otp =\n      (((digest[offset] & 127) << 24) |\n        ((digest[offset + 1] & 255) << 16) |\n        ((digest[offset + 2] & 255) << 8) |\n        (digest[offset + 3] & 255)) %\n      10 ** digits;\n\n    return otp.toString().padStart(digits, \"0\");\n  }\n\n  /**\n   * Generates an HOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.counter=this.counter++] Counter value.\n   * @returns {string} Token.\n   */\n  generate({ counter = this.counter++ } = {}) {\n    return HOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n    });\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.counter=0] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    counter = HOTP.defaults.counter,\n    window = HOTP.defaults.window,\n  }) {\n    // Return early if the token length does not match the digit number.\n    if (token.length !== digits) return null;\n\n    let delta = null;\n\n    const check = (/** @type {number} */ i) => {\n      const generatedToken = HOTP.generate({\n        secret,\n        algorithm,\n        digits,\n        counter: i,\n      });\n      if (timingSafeEqual(token, generatedToken)) {\n        delta = i - counter;\n      }\n    };\n\n    check(counter);\n    for (let i = 1; i <= window && delta === null; ++i) {\n      check(counter - i);\n      if (delta !== null) break;\n      check(counter + i);\n      if (delta !== null) break;\n    }\n\n    return delta;\n  }\n\n  /**\n   * Validates an HOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.counter=this.counter] Counter value.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, counter = this.counter, window }) {\n    return HOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      counter,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://hotp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `counter=${e(this.counter)}`\n    );\n  }\n}\n\nexport { HOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { Secret } from \"./secret.js\";\n\n/**\n * TOTP: Time-Based One-Time Password Algorithm.\n * @see [RFC 6238](https://tools.ietf.org/html/rfc6238)\n */\nclass TOTP {\n  /**\n   * Default configuration.\n   * @type {{\n   *   issuer: string,\n   *   label: string,\n   *   issuerInLabel: boolean,\n   *   algorithm: string,\n   *   digits: number,\n   *   period: number\n   *   window: number\n   * }}\n   */\n  static get defaults() {\n    return {\n      issuer: \"\",\n      label: \"OTPAuth\",\n      issuerInLabel: true,\n      algorithm: \"SHA1\",\n      digits: 6,\n      period: 30,\n      window: 1,\n    };\n  }\n\n  /**\n   * Creates a TOTP object.\n   * @param {Object} [config] Configuration options.\n   * @param {string} [config.issuer=''] Account provider.\n   * @param {string} [config.label='OTPAuth'] Account label.\n   * @param {boolean} [config.issuerInLabel=true] Include issuer prefix in label.\n   * @param {Secret|string} [config.secret=Secret] Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   */\n  constructor({\n    issuer = TOTP.defaults.issuer,\n    label = TOTP.defaults.label,\n    issuerInLabel = TOTP.defaults.issuerInLabel,\n    secret = new Secret(),\n    algorithm = TOTP.defaults.algorithm,\n    digits = TOTP.defaults.digits,\n    period = TOTP.defaults.period,\n  } = {}) {\n    /**\n     * Account provider.\n     * @type {string}\n     */\n    this.issuer = issuer;\n    /**\n     * Account label.\n     * @type {string}\n     */\n    this.label = label;\n    /**\n     * Include issuer prefix in label.\n     * @type {boolean}\n     */\n    this.issuerInLabel = issuerInLabel;\n    /**\n     * Secret key.\n     * @type {Secret}\n     */\n    this.secret =\n      typeof secret === \"string\" ? Secret.fromBase32(secret) : secret;\n    /**\n     * HMAC hashing algorithm.\n     * @type {string}\n     */\n    this.algorithm = algorithm.toUpperCase();\n    /**\n     * Token length.\n     * @type {number}\n     */\n    this.digits = digits;\n    /**\n     * Token time-step duration.\n     * @type {number}\n     */\n    this.period = period;\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} [config.digits=6] Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  static generate({\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n  }) {\n    return HOTP.generate({\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n    });\n  }\n\n  /**\n   * Generates a TOTP token.\n   * @param {Object} [config] Configuration options.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @returns {string} Token.\n   */\n  generate({ timestamp = Date.now() } = {}) {\n    return TOTP.generate({\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {Secret} config.secret Secret key.\n   * @param {string} [config.algorithm='SHA1'] HMAC hashing algorithm.\n   * @param {number} config.digits Token length.\n   * @param {number} [config.period=30] Token time-step duration.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  static validate({\n    token,\n    secret,\n    algorithm,\n    digits,\n    period = TOTP.defaults.period,\n    timestamp = Date.now(),\n    window,\n  }) {\n    return HOTP.validate({\n      token,\n      secret,\n      algorithm,\n      digits,\n      counter: Math.floor(timestamp / 1000 / period),\n      window,\n    });\n  }\n\n  /**\n   * Validates a TOTP token.\n   * @param {Object} config Configuration options.\n   * @param {string} config.token Token value.\n   * @param {number} [config.timestamp=Date.now] Timestamp value in milliseconds.\n   * @param {number} [config.window=1] Window of counter values to test.\n   * @returns {number|null} Token delta or null if it is not found in the search window, in which case it should be considered invalid.\n   */\n  validate({ token, timestamp, window }) {\n    return TOTP.validate({\n      token,\n      secret: this.secret,\n      algorithm: this.algorithm,\n      digits: this.digits,\n      period: this.period,\n      timestamp,\n      window,\n    });\n  }\n\n  /**\n   * Returns a Google Authenticator key URI.\n   * @returns {string} URI.\n   */\n  toString() {\n    const e = encodeURIComponent;\n    return (\n      \"otpauth://totp/\" +\n      `${\n        this.issuer.length > 0\n          ? this.issuerInLabel\n            ? `${e(this.issuer)}:${e(this.label)}?issuer=${e(this.issuer)}&`\n            : `${e(this.label)}?issuer=${e(this.issuer)}&`\n          : `${e(this.label)}?`\n      }` +\n      `secret=${e(this.secret.base32)}&` +\n      `algorithm=${e(this.algorithm)}&` +\n      `digits=${e(this.digits)}&` +\n      `period=${e(this.period)}`\n    );\n  }\n}\n\nexport { TOTP };\n","import { HOTP } from \"./hotp.js\";\nimport { TOTP } from \"./totp.js\";\n\n/**\n * Key URI regex (otpauth://TYPE/[ISSUER:]LABEL?PARAMETERS).\n * @type {RegExp}\n */\nconst OTPURI_REGEX =\n  /^otpauth:\\/\\/([ht]otp)\\/(.+)\\?([A-Z0-9.~_-]+=[^?&]*(?:&[A-Z0-9.~_-]+=[^?&]*)*)$/i;\n\n/**\n * RFC 4648 base32 alphabet with pad.\n * @type {RegExp}\n */\nconst SECRET_REGEX = /^[2-7A-Z]+=*$/i;\n\n/**\n * Regex for supported algorithms.\n * @type {RegExp}\n */\nconst ALGORITHM_REGEX = /^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i;\n\n/**\n * Integer regex.\n * @type {RegExp}\n */\nconst INTEGER_REGEX = /^[+-]?\\d+$/;\n\n/**\n * Positive integer regex.\n * @type {RegExp}\n */\nconst POSITIVE_INTEGER_REGEX = /^\\+?[1-9]\\d*$/;\n\n/**\n * HOTP/TOTP object/string conversion.\n * @see [Key URI Format](https://github.com/google/google-authenticator/wiki/Key-Uri-Format)\n */\nclass URI {\n  /**\n   * Parses a Google Authenticator key URI and returns an HOTP/TOTP object.\n   * @param {string} uri Google Authenticator Key URI.\n   * @returns {HOTP|TOTP} HOTP/TOTP object.\n   */\n  static parse(uri) {\n    let uriGroups;\n\n    try {\n      uriGroups = uri.match(OTPURI_REGEX);\n      // eslint-disable-next-line no-unused-vars\n    } catch (_) {\n      /* Handled below */\n    }\n\n    if (!Array.isArray(uriGroups)) {\n      throw new URIError(\"Invalid URI format\");\n    }\n\n    // Extract URI groups.\n    const uriType = uriGroups[1].toLowerCase();\n    const uriLabel = uriGroups[2]\n      .split(/(?::|%3A) *(.+)/i, 2)\n      .map(decodeURIComponent);\n    /** @type {Object.<string, string>} */\n    const uriParams = uriGroups[3].split(\"&\").reduce((acc, cur) => {\n      const pairArr = cur.split(/=(.*)/, 2).map(decodeURIComponent);\n      const pairKey = pairArr[0].toLowerCase();\n      const pairVal = pairArr[1];\n      /** @type {Object.<string, string>} */\n      const pairAcc = acc;\n\n      pairAcc[pairKey] = pairVal;\n      return pairAcc;\n    }, {});\n\n    // 'OTP' will be instantiated with 'config' argument.\n    let OTP;\n    const config = {};\n\n    if (uriType === \"hotp\") {\n      OTP = HOTP;\n\n      // Counter: required\n      if (\n        typeof uriParams.counter !== \"undefined\" &&\n        INTEGER_REGEX.test(uriParams.counter)\n      ) {\n        config.counter = parseInt(uriParams.counter, 10);\n      } else {\n        throw new TypeError(\"Missing or invalid 'counter' parameter\");\n      }\n    } else if (uriType === \"totp\") {\n      OTP = TOTP;\n\n      // Period: optional\n      if (typeof uriParams.period !== \"undefined\") {\n        if (POSITIVE_INTEGER_REGEX.test(uriParams.period)) {\n          config.period = parseInt(uriParams.period, 10);\n        } else {\n          throw new TypeError(\"Invalid 'period' parameter\");\n        }\n      }\n    } else {\n      throw new TypeError(\"Unknown OTP type\");\n    }\n\n    // Label: required\n    // Issuer: optional\n    if (typeof uriParams.issuer !== \"undefined\") {\n      config.issuer = uriParams.issuer;\n    }\n    if (uriLabel.length === 2) {\n      config.label = uriLabel[1];\n      if (typeof config.issuer === \"undefined\" || config.issuer === \"\") {\n        config.issuer = uriLabel[0];\n      } else if (uriLabel[0] === \"\") {\n        config.issuerInLabel = false;\n      }\n    } else {\n      config.label = uriLabel[0];\n      if (typeof config.issuer !== \"undefined\" && config.issuer !== \"\") {\n        config.issuerInLabel = false;\n      }\n    }\n\n    // Secret: required\n    if (\n      typeof uriParams.secret !== \"undefined\" &&\n      SECRET_REGEX.test(uriParams.secret)\n    ) {\n      config.secret = uriParams.secret;\n    } else {\n      throw new TypeError(\"Missing or invalid 'secret' parameter\");\n    }\n\n    // Algorithm: optional\n    if (typeof uriParams.algorithm !== \"undefined\") {\n      if (ALGORITHM_REGEX.test(uriParams.algorithm)) {\n        config.algorithm = uriParams.algorithm;\n      } else {\n        throw new TypeError(\"Invalid 'algorithm' parameter\");\n      }\n    }\n\n    // Digits: optional\n    if (typeof uriParams.digits !== \"undefined\") {\n      if (POSITIVE_INTEGER_REGEX.test(uriParams.digits)) {\n        config.digits = parseInt(uriParams.digits, 10);\n      } else {\n        throw new TypeError(\"Invalid 'digits' parameter\");\n      }\n    }\n\n    return new OTP(config);\n  }\n\n  /**\n   * Converts an HOTP/TOTP object to a Google Authenticator key URI.\n   * @param {HOTP|TOTP} otp HOTP/TOTP object.\n   * @returns {string} Google Authenticator Key URI.\n   */\n  static stringify(otp) {\n    if (otp instanceof HOTP || otp instanceof TOTP) {\n      return otp.toString();\n    }\n\n    throw new TypeError(\"Invalid 'HOTP/TOTP' object\");\n  }\n}\n\nexport { URI };\n","/**\n * Library version.\n * @type {string}\n */\nconst version = \"__OTPAUTH_VERSION__\";\n\nexport { version 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diff --git a/docs/classes/HOTP.html b/docs/classes/HOTP.html
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@@ -1,6 +1,6 @@
 <!DOCTYPE html><html class="default" lang="en"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>HOTP | otpauth</title><meta name="description" content="Documentation for otpauth"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">otpauth</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">otpauth</a></li><li><a href="HOTP.html">HOTP</a></li></ul><h1>Class HOTP</h1></div><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography"><p>HOTP: An HMAC-based One-time Password Algorithm.</p>
 </div><div class="tsd-comment tsd-typography"><h4>See</h4><p><a href="https://tools.ietf.org/html/rfc4226">RFC 4226</a></p>
-</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L10">hotp.js:10</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="HOTP.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
+</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L10">hotp.js:10</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="HOTP.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
 </div></section><section class="tsd-index-section"><h3 class="tsd-index-heading">Properties</h3><div class="tsd-index-list"><a href="HOTP.html#algorithm" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>algorithm</span></a>
 <a href="HOTP.html#counter" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>counter</span></a>
 <a href="HOTP.html#digits" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>digits</span></a>
@@ -23,34 +23,34 @@
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">boolean</span></h5><div class="tsd-comment tsd-typography"><p>Include issuer prefix in label.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Account label.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h5><div class="tsd-comment tsd-typography"><p>Secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="HOTP.html" class="tsd-signature-type tsd-kind-class">HOTP</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L46">hotp.js:46</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="algorithm" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>algorithm</span><a href="#algorithm" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L80">hotp.js:80</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="counter" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>counter</span><a href="#counter" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Initial counter value.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L90">hotp.js:90</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="digits" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>digits</span><a href="#digits" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token length.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L85">hotp.js:85</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer</span><a href="#issuer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account provider.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L59">hotp.js:59</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuerInLabel" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer<wbr/>In<wbr/>Label</span><a href="#issuerInLabel" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span></div><div class="tsd-comment tsd-typography"><p>Include issuer prefix in label.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L69">hotp.js:69</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="label" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>label</span><a href="#label" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account label.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L64">hotp.js:64</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="secret" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>secret</span><a href="#secret" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">:</span> <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L74">hotp.js:74</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="defaults" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>defaults</span><a href="#defaults" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="defaults.defaults-1"><span class="tsd-signature-keyword">get</span> defaults<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Default configuration.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></h4><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li></ul><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L23">hotp.js:23</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="generate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>generate</span><a href="#generate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate.generate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">?</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate.generate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates an HOTP token.</p>
+</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="HOTP.html" class="tsd-signature-type tsd-kind-class">HOTP</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L46">hotp.js:46</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="algorithm" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>algorithm</span><a href="#algorithm" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L80">hotp.js:80</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="counter" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>counter</span><a href="#counter" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Initial counter value.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L90">hotp.js:90</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="digits" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>digits</span><a href="#digits" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token length.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L85">hotp.js:85</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer</span><a href="#issuer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account provider.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L59">hotp.js:59</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuerInLabel" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer<wbr/>In<wbr/>Label</span><a href="#issuerInLabel" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span></div><div class="tsd-comment tsd-typography"><p>Include issuer prefix in label.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L69">hotp.js:69</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="label" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>label</span><a href="#label" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account label.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L64">hotp.js:64</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="secret" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>secret</span><a href="#secret" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">:</span> <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L74">hotp.js:74</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="defaults" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>defaults</span><a href="#defaults" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="defaults.defaults-1"><span class="tsd-signature-keyword">get</span> defaults<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Default configuration.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></h4><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li></ul><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L23">hotp.js:23</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="generate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>generate</span><a href="#generate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate.generate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">?</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate.generate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates an HOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><code class="tsd-tag ts-flagOptional">Optional</code> <span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span><span class="tsd-signature-symbol"> = {}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Counter value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>Token.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L128">hotp.js:128</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="toString" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>to<wbr/>String</span><a href="#toString" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="toString.toString-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">to<wbr/>String</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#toString.toString-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Returns a Google Authenticator key URI.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L128">hotp.js:128</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="toString" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>to<wbr/>String</span><a href="#toString" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="toString.toString-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">to<wbr/>String</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#toString.toString-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Returns a Google Authenticator key URI.</p>
 </div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>URI.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L200">hotp.js:200</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>validate</span><a href="#validate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate.validate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate.validate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates an HOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L207">hotp.js:207</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>validate</span><a href="#validate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate.validate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate.validate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates an HOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Counter value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Token value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Window of counter values to test.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h4><p>Token delta or null if it is not found in the search window, in which case it should be considered invalid.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L185">hotp.js:185</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="generate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>generate</span><a href="#generate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate-2.generate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate-2.generate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates an HOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L192">hotp.js:192</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="generate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>generate</span><a href="#generate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate-2.generate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate-2.generate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates an HOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Counter value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Token length.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h5><div class="tsd-comment tsd-typography"><p>Secret key.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>Token.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L102">hotp.js:102</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>validate</span><a href="#validate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate-2.validate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate-2.validate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates an HOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L102">hotp.js:102</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>validate</span><a href="#validate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate-2.validate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate-2.validate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates an HOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">counter</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Counter value.</p>
@@ -59,4 +59,4 @@
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Token value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Window of counter values to test.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h4><p>Token delta or null if it is not found in the search window, in which case it should be considered invalid.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/hotp.js#L148">hotp.js:148</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#algorithm" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>algorithm</span></a><a href="#counter" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>counter</span></a><a href="#digits" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>digits</span></a><a href="#issuer" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer</span></a><a href="#issuerInLabel" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer<wbr/>In<wbr/>Label</span></a><a href="#label" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>label</span></a><a href="#secret" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>secret</span></a><a href="#defaults" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>defaults</span></a><a href="#generate" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>generate</span></a><a href="#toString" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>to<wbr/>String</span></a><a href="#validate" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>validate</span></a><a href="#generate-2" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>generate</span></a><a href="#validate-2" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>validate</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/hotp.js#L148">hotp.js:148</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#algorithm" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>algorithm</span></a><a href="#counter" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>counter</span></a><a href="#digits" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>digits</span></a><a href="#issuer" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer</span></a><a href="#issuerInLabel" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer<wbr/>In<wbr/>Label</span></a><a href="#label" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>label</span></a><a href="#secret" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>secret</span></a><a href="#defaults" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>defaults</span></a><a href="#generate" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>generate</span></a><a href="#toString" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>to<wbr/>String</span></a><a href="#validate" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>validate</span></a><a href="#generate-2" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>generate</span></a><a href="#validate-2" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>validate</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
diff --git a/docs/classes/Secret.html b/docs/classes/Secret.html
index 87c7a3a..a3a59c7 100644
--- a/docs/classes/Secret.html
+++ b/docs/classes/Secret.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html><html class="default" lang="en"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>Secret | otpauth</title><meta name="description" content="Documentation for otpauth"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">otpauth</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">otpauth</a></li><li><a href="Secret.html">Secret</a></li></ul><h1>Class Secret</h1></div><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography"><p>OTP secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L10">secret.js:10</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="Secret.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
+</div><div class="tsd-comment tsd-typography"></div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L10">secret.js:10</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="Secret.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
 </div></section><section class="tsd-index-section"><h3 class="tsd-index-heading">Properties</h3><div class="tsd-index-list"><a href="Secret.html#buffer" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>buffer</span></a>
 </div></section><section class="tsd-index-section"><h3 class="tsd-index-heading">Accessors</h3><div class="tsd-index-list"><a href="Secret.html#base32" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>base32</span></a>
 <a href="Secret.html#hex" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>hex</span></a>
@@ -13,21 +13,21 @@
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><code class="tsd-tag ts-flagOptional">Optional</code> <span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">buffer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">ArrayBuffer</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">size</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span><span class="tsd-signature-symbol"> = {}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">buffer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">ArrayBuffer</span></h5><div class="tsd-comment tsd-typography"><p>Secret key.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">size</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Number of random bytes to generate, ignored if &#39;buffer&#39; is provided.</p>
-</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L17">secret.js:17</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="buffer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>buffer</span><a href="#buffer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">buffer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">ArrayBuffer</span></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L22">secret.js:22</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="base32" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>base32</span><a href="#base32" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="base32.base32-1"><span class="tsd-signature-keyword">get</span> base32<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Base32 string representation of secret key.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L91">secret.js:91</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="hex" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>hex</span><a href="#hex" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="hex.hex-1"><span class="tsd-signature-keyword">get</span> hex<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Hexadecimal string representation of secret key.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L104">secret.js:104</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="latin1" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>latin1</span><a href="#latin1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="latin1.latin1-1"><span class="tsd-signature-keyword">get</span> latin1<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Latin-1 string representation of secret key.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L65">secret.js:65</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="utf8" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>utf8</span><a href="#utf8" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="utf8.utf8-1"><span class="tsd-signature-keyword">get</span> utf8<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>UTF-8 string representation of secret key.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L78">secret.js:78</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="fromBase32" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Base32</span><a href="#fromBase32" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromBase32.fromBase32-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Base32</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromBase32.fromBase32-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a base32 string to a Secret object.</p>
+</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L17">secret.js:17</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="buffer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>buffer</span><a href="#buffer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">buffer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">ArrayBuffer</span></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L22">secret.js:22</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="base32" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>base32</span><a href="#base32" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="base32.base32-1"><span class="tsd-signature-keyword">get</span> base32<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Base32 string representation of secret key.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L91">secret.js:91</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="hex" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>hex</span><a href="#hex" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="hex.hex-1"><span class="tsd-signature-keyword">get</span> hex<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Hexadecimal string representation of secret key.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L104">secret.js:104</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="latin1" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>latin1</span><a href="#latin1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="latin1.latin1-1"><span class="tsd-signature-keyword">get</span> latin1<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Latin-1 string representation of secret key.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L65">secret.js:65</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="utf8" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>utf8</span><a href="#utf8" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="utf8.utf8-1"><span class="tsd-signature-keyword">get</span> utf8<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>UTF-8 string representation of secret key.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L78">secret.js:78</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="fromBase32" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Base32</span><a href="#fromBase32" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromBase32.fromBase32-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Base32</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromBase32.fromBase32-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a base32 string to a Secret object.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">str</span>: <span class="tsd-signature-type">string</span></span><div class="tsd-comment tsd-typography"><p>Base32 string.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><p>Secret object.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L48">secret.js:48</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromHex" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Hex</span><a href="#fromHex" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromHex.fromHex-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Hex</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromHex.fromHex-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a hexadecimal string to a Secret object.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L48">secret.js:48</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromHex" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Hex</span><a href="#fromHex" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromHex.fromHex-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Hex</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromHex.fromHex-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a hexadecimal string to a Secret object.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">str</span>: <span class="tsd-signature-type">string</span></span><div class="tsd-comment tsd-typography"><p>Hexadecimal string.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><p>Secret object.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L57">secret.js:57</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromLatin1" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Latin1</span><a href="#fromLatin1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromLatin1.fromLatin1-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Latin1</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromLatin1.fromLatin1-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a Latin-1 string to a Secret object.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L57">secret.js:57</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromLatin1" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>from<wbr/>Latin1</span><a href="#fromLatin1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromLatin1.fromLatin1-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">from<wbr/>Latin1</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromLatin1.fromLatin1-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts a Latin-1 string to a Secret object.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">str</span>: <span class="tsd-signature-type">string</span></span><div class="tsd-comment tsd-typography"><p>Latin-1 string.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><p>Secret object.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L30">secret.js:30</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromUTF8" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>fromUTF8</span><a href="#fromUTF8" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromUTF8.fromUTF8-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">fromUTF8</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromUTF8.fromUTF8-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts an UTF-8 string to a Secret object.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L30">secret.js:30</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="fromUTF8" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>fromUTF8</span><a href="#fromUTF8" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="fromUTF8.fromUTF8-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">fromUTF8</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">str</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><a href="#fromUTF8.fromUTF8-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts an UTF-8 string to a Secret object.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">str</span>: <span class="tsd-signature-type">string</span></span><div class="tsd-comment tsd-typography"><p>UTF-8 string.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h4><p>Secret object.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/secret.js#L39">secret.js:39</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#buffer" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>buffer</span></a><a href="#base32" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>base32</span></a><a href="#hex" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>hex</span></a><a href="#latin1" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>latin1</span></a><a href="#utf8" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>utf8</span></a><a href="#fromBase32" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Base32</span></a><a href="#fromHex" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Hex</span></a><a href="#fromLatin1" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Latin1</span></a><a href="#fromUTF8" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>fromUTF8</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/secret.js#L39">secret.js:39</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#buffer" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>buffer</span></a><a href="#base32" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>base32</span></a><a href="#hex" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>hex</span></a><a href="#latin1" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>latin1</span></a><a href="#utf8" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>utf8</span></a><a href="#fromBase32" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Base32</span></a><a href="#fromHex" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Hex</span></a><a href="#fromLatin1" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>from<wbr/>Latin1</span></a><a href="#fromUTF8" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>fromUTF8</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
diff --git a/docs/classes/TOTP.html b/docs/classes/TOTP.html
index b47b85d..bc74d66 100644
--- a/docs/classes/TOTP.html
+++ b/docs/classes/TOTP.html
@@ -1,6 +1,6 @@
 <!DOCTYPE html><html class="default" lang="en"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>TOTP | otpauth</title><meta name="description" content="Documentation for otpauth"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">otpauth</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">otpauth</a></li><li><a href="TOTP.html">TOTP</a></li></ul><h1>Class TOTP</h1></div><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography"><p>TOTP: Time-Based One-Time Password Algorithm.</p>
 </div><div class="tsd-comment tsd-typography"><h4>See</h4><p><a href="https://tools.ietf.org/html/rfc6238">RFC 6238</a></p>
-</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L8">totp.js:8</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="TOTP.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
+</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L8">totp.js:8</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="TOTP.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
 </div></section><section class="tsd-index-section"><h3 class="tsd-index-heading">Properties</h3><div class="tsd-index-list"><a href="TOTP.html#algorithm" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>algorithm</span></a>
 <a href="TOTP.html#digits" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>digits</span></a>
 <a href="TOTP.html#issuer" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer</span></a>
@@ -23,27 +23,27 @@
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Account label.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Token time-step duration.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> | </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h5><div class="tsd-comment tsd-typography"><p>Secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="TOTP.html" class="tsd-signature-type tsd-kind-class">TOTP</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L44">totp.js:44</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="algorithm" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>algorithm</span><a href="#algorithm" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L78">totp.js:78</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="digits" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>digits</span><a href="#digits" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token length.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L83">totp.js:83</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer</span><a href="#issuer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account provider.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L57">totp.js:57</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuerInLabel" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer<wbr/>In<wbr/>Label</span><a href="#issuerInLabel" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span></div><div class="tsd-comment tsd-typography"><p>Include issuer prefix in label.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L67">totp.js:67</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="label" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>label</span><a href="#label" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account label.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L62">totp.js:62</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="period" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>period</span><a href="#period" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token time-step duration.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L88">totp.js:88</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="secret" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>secret</span><a href="#secret" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">:</span> <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L72">totp.js:72</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="defaults" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>defaults</span><a href="#defaults" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="defaults.defaults-1"><span class="tsd-signature-keyword">get</span> defaults<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Default configuration.</p>
-</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></h4><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li></ul><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L21">totp.js:21</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="generate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>generate</span><a href="#generate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate.generate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">?</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate.generate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates a TOTP token.</p>
+</div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <a href="TOTP.html" class="tsd-signature-type tsd-kind-class">TOTP</a></h4><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L44">totp.js:44</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Properties</h2><section class="tsd-panel tsd-member"><a id="algorithm" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>algorithm</span><a href="#algorithm" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L78">totp.js:78</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="digits" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>digits</span><a href="#digits" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token length.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L83">totp.js:83</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuer" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer</span><a href="#issuer" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account provider.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L57">totp.js:57</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="issuerInLabel" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>issuer<wbr/>In<wbr/>Label</span><a href="#issuerInLabel" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span></div><div class="tsd-comment tsd-typography"><p>Include issuer prefix in label.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L67">totp.js:67</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="label" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>label</span><a href="#label" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div><div class="tsd-comment tsd-typography"><p>Account label.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L62">totp.js:62</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="period" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>period</span><a href="#period" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div><div class="tsd-comment tsd-typography"><p>Token time-step duration.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L88">totp.js:88</a></li></ul></aside></section><section class="tsd-panel tsd-member"><a id="secret" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>secret</span><a href="#secret" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><div class="tsd-signature"><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">:</span> <a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></div><div class="tsd-comment tsd-typography"><p>Secret key.</p>
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L72">totp.js:72</a></li></ul></aside></section></section><section class="tsd-panel-group tsd-member-group"><h2>Accessors</h2><section class="tsd-panel tsd-member"><a id="defaults" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>defaults</span><a href="#defaults" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature" id="defaults.defaults-1"><span class="tsd-signature-keyword">get</span> defaults<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Default configuration.</p>
+</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">issuerInLabel</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></h4><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">issuer<wbr/>In<wbr/>Label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">label</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5></li></ul><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L21">totp.js:21</a></li></ul></aside></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="generate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>generate</span><a href="#generate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate.generate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">?</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate.generate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates a TOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><code class="tsd-tag ts-flagOptional">Optional</code> <span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span><span class="tsd-signature-symbol"> = {}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Timestamp value in milliseconds.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>Token.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L122">totp.js:122</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="toString" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>to<wbr/>String</span><a href="#toString" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="toString.toString-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">to<wbr/>String</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#toString.toString-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Returns a Google Authenticator key URI.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L122">totp.js:122</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="toString" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>to<wbr/>String</span><a href="#toString" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="toString.toString-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">to<wbr/>String</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#toString.toString-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Returns a Google Authenticator key URI.</p>
 </div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>URI.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L187">totp.js:187</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>validate</span><a href="#validate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate.validate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate.validate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates a TOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L187">totp.js:187</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>validate</span><a href="#validate" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate.validate-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate.validate-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates a TOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Timestamp value in milliseconds.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Token value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Window of counter values to test.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h4><p>Token delta or null if it is not found in the search window, in which case it should be considered invalid.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L171">totp.js:171</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="generate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>generate</span><a href="#generate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate-2.generate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate-2.generate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates a TOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L171">totp.js:171</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="generate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>generate</span><a href="#generate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="generate-2.generate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">generate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#generate-2.generate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Generates a TOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Token length.</p>
@@ -51,7 +51,7 @@
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a></h5><div class="tsd-comment tsd-typography"><p>Secret key.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Timestamp value in milliseconds.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>Token.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L101">totp.js:101</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>validate</span><a href="#validate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate-2.validate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate-2.validate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates a TOTP token.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/totp.js#L101">totp.js:101</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="validate-2" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>validate</span><a href="#validate-2" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="validate-2.validate-3" class="tsd-anchor"></a><span class="tsd-kind-call-signature">validate</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">config</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><a href="#validate-2.validate-3" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Validates a TOTP token.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">config</span>: <span class="tsd-signature-symbol">{ </span><br/><span>    </span><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">period</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">secret</span><span class="tsd-signature-symbol">: </span><a href="Secret.html" class="tsd-signature-type tsd-kind-class">Secret</a><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">timestamp</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><span class="tsd-signature-symbol">; </span><br/><span>    </span><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">; </span><br/><span class="tsd-signature-symbol">}</span></span><div class="tsd-comment tsd-typography"><p>Configuration options.</p>
 </div><div class="tsd-comment tsd-typography"></div><ul class="tsd-parameters"><li class="tsd-parameter"><h5><span class="tsd-kind-property">algorithm</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>HMAC hashing algorithm.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">digits</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Token length.</p>
@@ -61,4 +61,4 @@
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">token</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span></h5><div class="tsd-comment tsd-typography"><p>Token value.</p>
 </div><div class="tsd-comment tsd-typography"></div></li><li class="tsd-parameter"><h5><span class="tsd-kind-property">window</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">undefined</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>Window of counter values to test.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">null</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">number</span></h4><p>Token delta or null if it is not found in the search window, in which case it should be considered invalid.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/totp.js#L144">totp.js:144</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#algorithm" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>algorithm</span></a><a href="#digits" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>digits</span></a><a href="#issuer" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>issuer</span></a><a href="#issuerInLabel" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use 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href="../assets/icons.svg#icon-1024"></use></svg><span>issuer<wbr/>In<wbr/>Label</span></a><a href="#label" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>label</span></a><a href="#period" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>period</span></a><a href="#secret" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1024"></use></svg><span>secret</span></a><a href="#defaults" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-262144"></use></svg><span>defaults</span></a><a href="#generate" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>generate</span></a><a href="#toString" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use 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\ No newline at end of file
diff --git a/docs/classes/URI.html b/docs/classes/URI.html
index edb962c..1bc7b7d 100644
--- a/docs/classes/URI.html
+++ b/docs/classes/URI.html
@@ -1,12 +1,12 @@
 <!DOCTYPE html><html class="default" lang="en"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>URI | otpauth</title><meta name="description" content="Documentation for otpauth"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">otpauth</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">otpauth</a></li><li><a href="URI.html">URI</a></li></ul><h1>Class URI</h1></div><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography"><p>HOTP/TOTP object/string conversion.</p>
 </div><div class="tsd-comment tsd-typography"><h4>See</h4><p><a href="https://github.com/google/google-authenticator/wiki/Key-Uri-Format">Key URI Format</a></p>
-</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/uri.js#L39">uri.js:39</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="URI.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
+</div></section><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/uri.js#L39">uri.js:39</a></li></ul></aside><section class="tsd-panel-group tsd-index-group"><section class="tsd-panel tsd-index-panel"><details class="tsd-index-content tsd-index-accordion" open><summary class="tsd-accordion-summary tsd-index-summary"><h5 class="tsd-index-heading uppercase" role="button" aria-expanded="false" tabIndex="0"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-chevronSmall"></use></svg> Index</h5></summary><div class="tsd-accordion-details"><section class="tsd-index-section"><h3 class="tsd-index-heading">Constructors</h3><div class="tsd-index-list"><a href="URI.html#constructor" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a>
 </div></section><section class="tsd-index-section"><h3 class="tsd-index-heading">Methods</h3><div class="tsd-index-list"><a href="URI.html#parse" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>parse</span></a>
 <a href="URI.html#stringify" class="tsd-index-link"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>stringify</span></a>
 </div></section></div></details></section></section><section class="tsd-panel-group tsd-member-group"><h2>Constructors</h2><section class="tsd-panel tsd-member"><a id="constructor" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span>constructor</span><a href="#constructor" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="constructor.new_URI" class="tsd-anchor"></a><span class="tsd-kind-constructor-signature">new URI</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="URI.html" class="tsd-signature-type tsd-kind-class">URI</a><a href="#constructor.new_URI" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><h4 class="tsd-returns-title">Returns <a href="URI.html" class="tsd-signature-type tsd-kind-class">URI</a></h4></li></ul></section></section><section class="tsd-panel-group tsd-member-group"><h2>Methods</h2><section class="tsd-panel tsd-member"><a id="parse" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>parse</span><a href="#parse" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="parse.parse-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">parse</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">uri</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="HOTP.html" class="tsd-signature-type tsd-kind-class">HOTP</a><span class="tsd-signature-symbol"> | </span><a href="TOTP.html" class="tsd-signature-type tsd-kind-class">TOTP</a><a href="#parse.parse-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Parses a Google Authenticator key URI and returns an HOTP/TOTP object.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">uri</span>: <span class="tsd-signature-type">string</span></span><div class="tsd-comment tsd-typography"><p>Google Authenticator Key URI.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="HOTP.html" class="tsd-signature-type tsd-kind-class">HOTP</a><span class="tsd-signature-symbol"> | </span><a href="TOTP.html" class="tsd-signature-type tsd-kind-class">TOTP</a></h4><p>HOTP/TOTP object.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/uri.js#L45">uri.js:45</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="stringify" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>stringify</span><a href="#stringify" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="stringify.stringify-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">stringify</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">otp</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#stringify.stringify-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts an HOTP/TOTP object to a Google Authenticator key URI.</p>
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/uri.js#L45">uri.js:45</a></li></ul></aside></li></ul></section><section class="tsd-panel tsd-member"><a id="stringify" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><code class="tsd-tag ts-flagStatic">Static</code> <span>stringify</span><a href="#stringify" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h3><ul class="tsd-signatures"><li class="tsd-signature tsd-anchor-link"><a id="stringify.stringify-1" class="tsd-anchor"></a><span class="tsd-kind-call-signature">stringify</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">otp</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#stringify.stringify-1" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></li><li class="tsd-description"><div class="tsd-comment tsd-typography"><p>Converts an HOTP/TOTP object to a Google Authenticator key URI.</p>
 </div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><span><span class="tsd-kind-parameter">otp</span>: <a href="HOTP.html" class="tsd-signature-type tsd-kind-class">HOTP</a><span class="tsd-signature-symbol"> | </span><a href="TOTP.html" class="tsd-signature-type tsd-kind-class">TOTP</a></span><div class="tsd-comment tsd-typography"><p>HOTP/TOTP object.</p>
 </div><div class="tsd-comment tsd-typography"></div></li></ul></div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">string</span></h4><p>Google Authenticator Key URI.</p>
-<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/uri.js#L161">uri.js:161</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#parse" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>parse</span></a><a href="#stringify" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>stringify</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
+<div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/uri.js#L162">uri.js:162</a></li></ul></aside></li></ul></section></section></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div><details open class="tsd-index-accordion tsd-page-navigation"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>On This Page</h3></summary><div class="tsd-accordion-details"><a href="#constructor" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-512"></use></svg><span>constructor</span></a><a href="#parse" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>parse</span></a><a href="#stringify" class=""><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-2048"></use></svg><span>stringify</span></a></div></details></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
diff --git a/docs/variables/version.html b/docs/variables/version.html
index 3bda84c..4959dca 100644
--- a/docs/variables/version.html
+++ b/docs/variables/version.html
@@ -1,2 +1,2 @@
 <!DOCTYPE html><html class="default" lang="en"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>version | otpauth</title><meta name="description" content="Documentation for otpauth"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">otpauth</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">otpauth</a></li><li><a href="version.html">version</a></li></ul><h1>Variable version<code class="tsd-tag ts-flagConst">Const</code> </h1></div><div class="tsd-signature"><span class="tsd-kind-variable">version</span><span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span><span class="tsd-signature-symbol"> = &quot;__OTPAUTH_VERSION__&quot;</span></div><div class="tsd-comment tsd-typography"><p>Library version.</p>
-</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/fa205178e0c7e014048703f2157d023271658ce3/src/version.js#L5">version.js:5</a></li></ul></aside></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
+</div><div class="tsd-comment tsd-typography"></div><aside class="tsd-sources"><ul><li>Defined in <a href="https://github.com/hectorm/otpauth/blob/ffeabc691d13f7c3aefeb87ef1c5e23eb14827b5/src/version.js#L5">version.js:5</a></li></ul></aside></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-index-accordion"><summary class="tsd-accordion-summary"><h3><svg width="20" height="20" viewBox="0 0 24 24" fill="none"><use href="../assets/icons.svg#icon-chevronDown"></use></svg>Settings</h3></summary><div class="tsd-accordion-details"><div class="tsd-filter-visibility"><h4 class="uppercase">Member Visibility</h4><form><ul id="tsd-filter-options"><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-protected" name="protected"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Protected</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-private" name="private"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Private</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-inherited" name="inherited" checked/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>Inherited</span></label></li><li class="tsd-filter-item"><label class="tsd-filter-input"><input type="checkbox" id="tsd-filter-external" name="external"/><svg width="32" height="32" viewBox="0 0 32 32" aria-hidden="true"><rect class="tsd-checkbox-background" width="30" height="30" x="1" y="1" rx="6" fill="none"></rect><path class="tsd-checkbox-checkmark" d="M8.35422 16.8214L13.2143 21.75L24.6458 10.25" stroke="none" stroke-width="3.5" stroke-linejoin="round" fill="none"></path></svg><span>External</span></label></li></ul></form></div><div class="tsd-theme-toggle"><h4 class="uppercase">Theme</h4><select id="tsd-theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></div></div></details></div></div><div class="site-menu"><nav class="tsd-navigation"><a href="../index.html"><svg class="tsd-kind-icon" viewBox="0 0 24 24"><use href="../assets/icons.svg#icon-1"></use></svg><span>otpauth</span></a><ul class="tsd-small-nested-navigation" id="tsd-nav-container" data-base=".."><li>Loading...</li></ul></nav></div></div></div><footer><p class="tsd-generator">Generated using <a href="https://typedoc.org/" target="_blank">TypeDoc</a></p></footer><div class="overlay"></div></body></html>
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index ea06d6c..2808935 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "otpauth",
-  "version": "9.2.3",
+  "version": "9.2.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "otpauth",
-      "version": "9.2.3",
+      "version": "9.2.4",
       "license": "MIT",
       "dependencies": {
         "jssha": "~3.3.1"
diff --git a/package.json b/package.json
index 5768ec2..1c73a36 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "otpauth",
-  "version": "9.2.3",
+  "version": "9.2.4",
   "description": "One Time Password (HOTP/TOTP) library for Node.js, Deno, Bun and browsers",
   "keywords": [
     "otp",