-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsha384-512.c
1030 lines (954 loc) · 37.5 KB
/
sha384-512.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/************************* sha384-512.c ************************/
/***************** See RFC 6234 for details. *******************/
/* Copyright (c) 2011 IETF Trust and the persons identified as */
/* authors of the code. All rights reserved. */
/* See sha.h for terms of use and redistribution. */
/*
* Description:
* This file implements the Secure Hash Algorithms SHA-384 and
* SHA-512 as defined in the U.S. National Institute of Standards
* and Technology Federal Information Processing Standards
* Publication (FIPS PUB) 180-3 published in October 2008
* and formerly defined in its predecessors, FIPS PUB 180-1
* and FIP PUB 180-2.
*
* A combined document showing all algorithms is available at
* http://csrc.nist.gov/publications/fips/
* fips180-3/fips180-3_final.pdf
*
* The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit
* message digests for a given data stream. It should take about
* 2**n steps to find a message with the same digest as a given
* message and 2**(n/2) to find any two messages with the same
* digest, when n is the digest size in bits. Therefore, this
* algorithm can serve as a means of providing a
* "fingerprint" for a message.
*
* Portability Issues:
* SHA-384 and SHA-512 are defined in terms of 64-bit "words",
* but if USE_32BIT_ONLY is #defined, this code is implemented in
* terms of 32-bit "words". This code uses <stdint.h> (included
* via "sha.h") to define the 64-, 32- and 8-bit unsigned integer
* types. If your C compiler does not support 64-bit unsigned
* integers and you do not #define USE_32BIT_ONLY, this code is
* not appropriate.
*
* Caveats:
* SHA-384 and SHA-512 are designed to work with messages less
* than 2^128 bits long. This implementation uses SHA384/512Input()
* to hash the bits that are a multiple of the size of an 8-bit
* octet, and then optionally uses SHA384/256FinalBits()
* to hash the final few bits of the input.
*
*/
#include "sha.h"
#ifdef USE_32BIT_ONLY
/*
* Define 64-bit arithmetic in terms of 32-bit arithmetic.
* Each 64-bit number is represented in a 2-word array.
* All macros are defined such that the result is the last parameter.
*/
/*
* Define shift, rotate left, and rotate right functions
*/
#define SHA512_SHR(bits, word, ret) ( \
/* (((uint64_t)((word))) >> (bits)) */ \
(ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \
((word)[0] >> (bits)) : 0, \
(ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \
((bits) == 32) ? (word)[0] : \
((bits) >= 0) ? \
(((word)[0] << (32 - (bits))) | \
((word)[1] >> (bits))) : 0 )
#define SHA512_SHL(bits, word, ret) ( \
/* (((uint64_t)(word)) << (bits)) */ \
(ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \
((bits) == 32) ? (word)[1] : \
((bits) >= 0) ? \
(((word)[0] << (bits)) | \
((word)[1] >> (32 - (bits)))) : \
0, \
(ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \
((word)[1] << (bits)) : 0 )
/*
* Define 64-bit OR
*/
#define SHA512_OR(word1, word2, ret) ( \
(ret)[0] = (word1)[0] | (word2)[0], \
(ret)[1] = (word1)[1] | (word2)[1] )
/*
* Define 64-bit XOR
*/
#define SHA512_XOR(word1, word2, ret) ( \
(ret)[0] = (word1)[0] ^ (word2)[0], \
(ret)[1] = (word1)[1] ^ (word2)[1] )
/*
* Define 64-bit AND
*/
#define SHA512_AND(word1, word2, ret) ( \
(ret)[0] = (word1)[0] & (word2)[0], \
(ret)[1] = (word1)[1] & (word2)[1] )
/*
* Define 64-bit TILDA
*/
#define SHA512_TILDA(word, ret) \
( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] )
/*
* Define 64-bit ADD
*/
#define SHA512_ADD(word1, word2, ret) ( \
(ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \
(ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) )
/*
* Add the 4word value in word2 to word1.
*/
static uint32_t ADDTO4_temp, ADDTO4_temp2;
#define SHA512_ADDTO4(word1, word2) ( \
ADDTO4_temp = (word1)[3], \
(word1)[3] += (word2)[3], \
ADDTO4_temp2 = (word1)[2], \
(word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \
ADDTO4_temp = (word1)[1], \
(word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \
(word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp) )
/*
* Add the 2word value in word2 to word1.
*/
static uint32_t ADDTO2_temp;
#define SHA512_ADDTO2(word1, word2) ( \
ADDTO2_temp = (word1)[1], \
(word1)[1] += (word2)[1], \
(word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) )
/*
* SHA rotate ((word >> bits) | (word << (64-bits)))
*/
static uint32_t ROTR_temp1[2], ROTR_temp2[2];
#define SHA512_ROTR(bits, word, ret) ( \
SHA512_SHR((bits), (word), ROTR_temp1), \
SHA512_SHL(64-(bits), (word), ROTR_temp2), \
SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) )
/*
* Define the SHA SIGMA and sigma macros
*
* SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
*/
static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2],
SIGMA0_temp3[2], SIGMA0_temp4[2];
#define SHA512_SIGMA0(word, ret) ( \
SHA512_ROTR(28, (word), SIGMA0_temp1), \
SHA512_ROTR(34, (word), SIGMA0_temp2), \
SHA512_ROTR(39, (word), SIGMA0_temp3), \
SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \
SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) )
/*
* SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)
*/
static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2],
SIGMA1_temp3[2], SIGMA1_temp4[2];
#define SHA512_SIGMA1(word, ret) ( \
SHA512_ROTR(14, (word), SIGMA1_temp1), \
SHA512_ROTR(18, (word), SIGMA1_temp2), \
SHA512_ROTR(41, (word), SIGMA1_temp3), \
SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \
SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) )
/*
* (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
*/
static uint32_t sigma0_temp1[2], sigma0_temp2[2],
sigma0_temp3[2], sigma0_temp4[2];
#define SHA512_sigma0(word, ret) ( \
SHA512_ROTR( 1, (word), sigma0_temp1), \
SHA512_ROTR( 8, (word), sigma0_temp2), \
SHA512_SHR( 7, (word), sigma0_temp3), \
SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \
SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) )
/*
* (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
*/
static uint32_t sigma1_temp1[2], sigma1_temp2[2],
sigma1_temp3[2], sigma1_temp4[2];
#define SHA512_sigma1(word, ret) ( \
SHA512_ROTR(19, (word), sigma1_temp1), \
SHA512_ROTR(61, (word), sigma1_temp2), \
SHA512_SHR( 6, (word), sigma1_temp3), \
SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \
SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) )
#ifndef USE_MODIFIED_MACROS
/*
* These definitions are the ones used in FIPS 180-3, section 4.1.3
* Ch(x,y,z) ((x & y) ^ (~x & z))
*/
static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2];
#define SHA_Ch(x, y, z, ret) ( \
SHA512_AND(x, y, Ch_temp1), \
SHA512_TILDA(x, Ch_temp2), \
SHA512_AND(Ch_temp2, z, Ch_temp3), \
SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) )
/*
* Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z)))
*/
static uint32_t Maj_temp1[2], Maj_temp2[2],
Maj_temp3[2], Maj_temp4[2];
#define SHA_Maj(x, y, z, ret) ( \
SHA512_AND(x, y, Maj_temp1), \
SHA512_AND(x, z, Maj_temp2), \
SHA512_AND(y, z, Maj_temp3), \
SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \
SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) )
#else /* !USE_MODIFIED_MACROS */
/*
* These definitions are potentially faster equivalents for the ones
* used in FIPS 180-3, section 4.1.3.
* ((x & y) ^ (~x & z)) becomes
* ((x & (y ^ z)) ^ z)
*/
#define SHA_Ch(x, y, z, ret) ( \
(ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \
(ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) )
/*
* ((x & y) ^ (x & z) ^ (y & z)) becomes
* ((x & (y | z)) | (y & z))
*/
#define SHA_Maj(x, y, z, ret) ( \
ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \
ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) )
#endif /* USE_MODIFIED_MACROS */
/*
* Add "length" to the length.
* Set Corrupted when overflow has occurred.
*/
static uint32_t addTemp[4] = { 0, 0, 0, 0 };
#define SHA384_512AddLength(context, length) ( \
addTemp[3] = (length), SHA512_ADDTO4((context)->Length, addTemp), \
(context)->Corrupted = (((context)->Length[3] < (length)) && \
((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \
((context)->Length[0] == 0)) ? shaInputTooLong : \
(context)->Corrupted )
/* Local Function Prototypes */
static int SHA384_512Reset(SHA512Context *context,
uint32_t H0[SHA512HashSize/4]);
static void SHA384_512ProcessMessageBlock(SHA512Context *context);
static void SHA384_512Finalize(SHA512Context *context,
uint8_t Pad_Byte);
static void SHA384_512PadMessage(SHA512Context *context,
uint8_t Pad_Byte);
static int SHA384_512ResultN( SHA512Context *context,
uint8_t Message_Digest[ ], int HashSize);
/* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */
static uint32_t SHA384_H0[SHA512HashSize/4] = {
0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A,
0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31,
0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D,
0xBEFA4FA4
};
static uint32_t SHA512_H0[SHA512HashSize/4] = {
0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372,
0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1,
0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19,
0x137E2179
};
#else /* !USE_32BIT_ONLY */
#include "sha-private.h"
/* Define the SHA shift, rotate left and rotate right macros */
#define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits))
#define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \
(((uint64_t)(word)) << (64-(bits))))
/*
* Define the SHA SIGMA and sigma macros
*
* SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
*/
#define SHA512_SIGMA0(word) \
(SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word))
#define SHA512_SIGMA1(word) \
(SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word))
#define SHA512_sigma0(word) \
(SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
#define SHA512_sigma1(word) \
(SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
/*
* Add "length" to the length.
* Set Corrupted when overflow has occurred.
*/
static uint64_t addTemp;
#define SHA384_512AddLength(context, length) \
(addTemp = context->Length_Low, context->Corrupted = \
((context->Length_Low += length) < addTemp) && \
(++context->Length_High == 0) ? shaInputTooLong : \
(context)->Corrupted)
/* Local Function Prototypes */
static int SHA384_512Reset(SHA512Context *context,
uint64_t H0[SHA512HashSize/8]);
static void SHA384_512ProcessMessageBlock(SHA512Context *context);
static void SHA384_512Finalize(SHA512Context *context,
uint8_t Pad_Byte);
static void SHA384_512PadMessage(SHA512Context *context,
uint8_t Pad_Byte);
static int SHA384_512ResultN(SHA512Context *context,
uint8_t Message_Digest[ ], int HashSize);
/* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */
static uint64_t SHA384_H0[ ] = {
0xCBBB9D5DC1059ED8ll, 0x629A292A367CD507ll, 0x9159015A3070DD17ll,
0x152FECD8F70E5939ll, 0x67332667FFC00B31ll, 0x8EB44A8768581511ll,
0xDB0C2E0D64F98FA7ll, 0x47B5481DBEFA4FA4ll
};
static uint64_t SHA512_H0[ ] = {
0x6A09E667F3BCC908ll, 0xBB67AE8584CAA73Bll, 0x3C6EF372FE94F82Bll,
0xA54FF53A5F1D36F1ll, 0x510E527FADE682D1ll, 0x9B05688C2B3E6C1Fll,
0x1F83D9ABFB41BD6Bll, 0x5BE0CD19137E2179ll
};
#endif /* USE_32BIT_ONLY */
/*
* SHA384Reset
*
* Description:
* This function will initialize the SHA384Context in preparation
* for computing a new SHA384 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*
*/
int SHA384Reset(SHA384Context *context)
{
return SHA384_512Reset(context, SHA384_H0);
}
/*
* SHA384Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
* message_array[ ]: [in]
* An array of octets representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array.
*
* Returns:
* sha Error Code.
*
*/
int SHA384Input(SHA384Context *context,
const uint8_t *message_array, unsigned int length)
{
return SHA512Input(context, message_array, length);
}
/*
* SHA384FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*
*/
int SHA384FinalBits(SHA384Context *context,
uint8_t message_bits, unsigned int length)
{
return SHA512FinalBits(context, message_bits, length);
}
/*
* SHA384Result
*
* Description:
* This function will return the 384-bit message digest
* into the Message_Digest array provided by the caller.
* NOTE:
* The first octet of hash is stored in the element with index 0,
* the last octet of hash in the element with index 47.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest[ ]: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
int SHA384Result(SHA384Context *context,
uint8_t Message_Digest[SHA384HashSize])
{
return SHA384_512ResultN(context, Message_Digest, SHA384HashSize);
}
/*
* SHA512Reset
*
* Description:
* This function will initialize the SHA512Context in preparation
* for computing a new SHA512 message digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
*
* Returns:
* sha Error Code.
*
*/
int SHA512Reset(SHA512Context *context)
{
return SHA384_512Reset(context, SHA512_H0);
}
/*
* SHA512Input
*
* Description:
* This function accepts an array of octets as the next portion
* of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
* message_array[ ]: [in]
* An array of octets representing the next portion of
* the message.
* length: [in]
* The length of the message in message_array.
*
* Returns:
* sha Error Code.
*
*/
int SHA512Input(SHA512Context *context,
const uint8_t *message_array,
unsigned int length)
{
if (!context) return shaNull;
if (!length) return shaSuccess;
if (!message_array) return shaNull;
if (context->Computed) return context->Corrupted = shaStateError;
if (context->Corrupted) return context->Corrupted;
while (length--) {
context->Message_Block[context->Message_Block_Index++] =
*message_array;
if ((SHA384_512AddLength(context, 8) == shaSuccess) &&
(context->Message_Block_Index == SHA512_Message_Block_Size))
SHA384_512ProcessMessageBlock(context);
message_array++;
}
return context->Corrupted;
}
/*
* SHA512FinalBits
*
* Description:
* This function will add in any final bits of the message.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
* message_bits: [in]
* The final bits of the message, in the upper portion of the
* byte. (Use 0b###00000 instead of 0b00000### to input the
* three bits ###.)
* length: [in]
* The number of bits in message_bits, between 1 and 7.
*
* Returns:
* sha Error Code.
*
*/
int SHA512FinalBits(SHA512Context *context,
uint8_t message_bits, unsigned int length)
{
static uint8_t masks[8] = {
/* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
/* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
/* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
/* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE
};
static uint8_t markbit[8] = {
/* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
/* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
/* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
/* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01
};
if (!context) return shaNull;
if (!length) return shaSuccess;
if (context->Corrupted) return context->Corrupted;
if (context->Computed) return context->Corrupted = shaStateError;
if (length >= 8) return context->Corrupted = shaBadParam;
SHA384_512AddLength(context, length);
SHA384_512Finalize(context, (uint8_t)
((message_bits & masks[length]) | markbit[length]));
return context->Corrupted;
}
/*
* SHA512Result
*
* Description:
* This function will return the 512-bit message digest
* into the Message_Digest array provided by the caller.
* NOTE:
* The first octet of hash is stored in the element with index 0,
* the last octet of hash in the element with index 63.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest[ ]: [out]
* Where the digest is returned.
*
* Returns:
* sha Error Code.
*
*/
int SHA512Result(SHA512Context *context,
uint8_t Message_Digest[SHA512HashSize])
{
return SHA384_512ResultN(context, Message_Digest, SHA512HashSize);
}
/*
* SHA384_512Reset
*
* Description:
* This helper function will initialize the SHA512Context in
* preparation for computing a new SHA384 or SHA512 message
* digest.
*
* Parameters:
* context: [in/out]
* The context to reset.
* H0[ ]: [in]
* The initial hash value array to use.
*
* Returns:
* sha Error Code.
*
*/
#ifdef USE_32BIT_ONLY
static int SHA384_512Reset(SHA512Context *context,
uint32_t H0[SHA512HashSize/4])
#else /* !USE_32BIT_ONLY */
static int SHA384_512Reset(SHA512Context *context,
uint64_t H0[SHA512HashSize/8])
#endif /* USE_32BIT_ONLY */
{
int i;
if (!context) return shaNull;
context->Message_Block_Index = 0;
#ifdef USE_32BIT_ONLY
context->Length[0] = context->Length[1] =
context->Length[2] = context->Length[3] = 0;
for (i = 0; i < SHA512HashSize/4; i++)
context->Intermediate_Hash[i] = H0[i];
#else /* !USE_32BIT_ONLY */
context->Length_High = context->Length_Low = 0;
for (i = 0; i < SHA512HashSize/8; i++)
context->Intermediate_Hash[i] = H0[i];
#endif /* USE_32BIT_ONLY */
context->Computed = 0;
context->Corrupted = shaSuccess;
return shaSuccess;
}
/*
* SHA384_512ProcessMessageBlock
*
* Description:
* This helper function will process the next 1024 bits of the
* message stored in the Message_Block array.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
*
* Returns:
* Nothing.
*
* Comments:
* Many of the variable names in this code, especially the
* single character names, were used because those were the
* names used in the Secure Hash Standard.
*
*
*/
static void SHA384_512ProcessMessageBlock(SHA512Context *context)
{
#ifdef USE_32BIT_ONLY
/* Constants defined in FIPS 180-3, section 4.2.3 */
static const uint32_t K[80*2] = {
0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF,
0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538,
0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5,
0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE,
0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74,
0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235,
0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786,
0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65,
0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC,
0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB,
0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7,
0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725,
0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85,
0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED,
0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB,
0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B,
0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70,
0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218,
0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070,
0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53,
0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3,
0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373,
0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F,
0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC,
0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7,
0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C,
0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F,
0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6,
0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5,
0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC,
0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C,
0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817
};
int t, t2, t8; /* Loop counter */
uint32_t temp1[2], temp2[2], /* Temporary word values */
temp3[2], temp4[2], temp5[2];
uint32_t W[2*80]; /* Word sequence */
uint32_t A[2], B[2], C[2], D[2], /* Word buffers */
E[2], F[2], G[2], H[2];
/* Initialize the first 16 words in the array W */
for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) {
W[t2++] = ((((uint32_t)context->Message_Block[t8 ])) << 24) |
((((uint32_t)context->Message_Block[t8 + 1])) << 16) |
((((uint32_t)context->Message_Block[t8 + 2])) << 8) |
((((uint32_t)context->Message_Block[t8 + 3])));
W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) |
((((uint32_t)context->Message_Block[t8 + 5])) << 16) |
((((uint32_t)context->Message_Block[t8 + 6])) << 8) |
((((uint32_t)context->Message_Block[t8 + 7])));
}
for (t = 16; t < 80; t++, t2 += 2) {
/* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
SHA512_sigma0(W[t-15]) + W[t-16]; */
uint32_t *Wt2 = &W[t2-2*2];
uint32_t *Wt7 = &W[t2-7*2];
uint32_t *Wt15 = &W[t2-15*2];
uint32_t *Wt16 = &W[t2-16*2];
SHA512_sigma1(Wt2, temp1);
SHA512_ADD(temp1, Wt7, temp2);
SHA512_sigma0(Wt15, temp1);
SHA512_ADD(temp1, Wt16, temp3);
SHA512_ADD(temp2, temp3, &W[t2]);
}
A[0] = context->Intermediate_Hash[0];
A[1] = context->Intermediate_Hash[1];
B[0] = context->Intermediate_Hash[2];
B[1] = context->Intermediate_Hash[3];
C[0] = context->Intermediate_Hash[4];
C[1] = context->Intermediate_Hash[5];
D[0] = context->Intermediate_Hash[6];
D[1] = context->Intermediate_Hash[7];
E[0] = context->Intermediate_Hash[8];
E[1] = context->Intermediate_Hash[9];
F[0] = context->Intermediate_Hash[10];
F[1] = context->Intermediate_Hash[11];
G[0] = context->Intermediate_Hash[12];
G[1] = context->Intermediate_Hash[13];
H[0] = context->Intermediate_Hash[14];
H[1] = context->Intermediate_Hash[15];
for (t = t2 = 0; t < 80; t++, t2 += 2) {
/*
* temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
*/
SHA512_SIGMA1(E,temp1);
SHA512_ADD(H, temp1, temp2);
SHA_Ch(E,F,G,temp3);
SHA512_ADD(temp2, temp3, temp4);
SHA512_ADD(&K[t2], &W[t2], temp5);
SHA512_ADD(temp4, temp5, temp1);
/*
* temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
*/
SHA512_SIGMA0(A,temp3);
SHA_Maj(A,B,C,temp4);
SHA512_ADD(temp3, temp4, temp2);
H[0] = G[0]; H[1] = G[1];
G[0] = F[0]; G[1] = F[1];
F[0] = E[0]; F[1] = E[1];
SHA512_ADD(D, temp1, E);
D[0] = C[0]; D[1] = C[1];
C[0] = B[0]; C[1] = B[1];
B[0] = A[0]; B[1] = A[1];
SHA512_ADD(temp1, temp2, A);
}
SHA512_ADDTO2(&context->Intermediate_Hash[0], A);
SHA512_ADDTO2(&context->Intermediate_Hash[2], B);
SHA512_ADDTO2(&context->Intermediate_Hash[4], C);
SHA512_ADDTO2(&context->Intermediate_Hash[6], D);
SHA512_ADDTO2(&context->Intermediate_Hash[8], E);
SHA512_ADDTO2(&context->Intermediate_Hash[10], F);
SHA512_ADDTO2(&context->Intermediate_Hash[12], G);
SHA512_ADDTO2(&context->Intermediate_Hash[14], H);
#else /* !USE_32BIT_ONLY */
/* Constants defined in FIPS 180-3, section 4.2.3 */
static const uint64_t K[80] = {
0x428A2F98D728AE22ll, 0x7137449123EF65CDll, 0xB5C0FBCFEC4D3B2Fll,
0xE9B5DBA58189DBBCll, 0x3956C25BF348B538ll, 0x59F111F1B605D019ll,
0x923F82A4AF194F9Bll, 0xAB1C5ED5DA6D8118ll, 0xD807AA98A3030242ll,
0x12835B0145706FBEll, 0x243185BE4EE4B28Cll, 0x550C7DC3D5FFB4E2ll,
0x72BE5D74F27B896Fll, 0x80DEB1FE3B1696B1ll, 0x9BDC06A725C71235ll,
0xC19BF174CF692694ll, 0xE49B69C19EF14AD2ll, 0xEFBE4786384F25E3ll,
0x0FC19DC68B8CD5B5ll, 0x240CA1CC77AC9C65ll, 0x2DE92C6F592B0275ll,
0x4A7484AA6EA6E483ll, 0x5CB0A9DCBD41FBD4ll, 0x76F988DA831153B5ll,
0x983E5152EE66DFABll, 0xA831C66D2DB43210ll, 0xB00327C898FB213Fll,
0xBF597FC7BEEF0EE4ll, 0xC6E00BF33DA88FC2ll, 0xD5A79147930AA725ll,
0x06CA6351E003826Fll, 0x142929670A0E6E70ll, 0x27B70A8546D22FFCll,
0x2E1B21385C26C926ll, 0x4D2C6DFC5AC42AEDll, 0x53380D139D95B3DFll,
0x650A73548BAF63DEll, 0x766A0ABB3C77B2A8ll, 0x81C2C92E47EDAEE6ll,
0x92722C851482353Bll, 0xA2BFE8A14CF10364ll, 0xA81A664BBC423001ll,
0xC24B8B70D0F89791ll, 0xC76C51A30654BE30ll, 0xD192E819D6EF5218ll,
0xD69906245565A910ll, 0xF40E35855771202All, 0x106AA07032BBD1B8ll,
0x19A4C116B8D2D0C8ll, 0x1E376C085141AB53ll, 0x2748774CDF8EEB99ll,
0x34B0BCB5E19B48A8ll, 0x391C0CB3C5C95A63ll, 0x4ED8AA4AE3418ACBll,
0x5B9CCA4F7763E373ll, 0x682E6FF3D6B2B8A3ll, 0x748F82EE5DEFB2FCll,
0x78A5636F43172F60ll, 0x84C87814A1F0AB72ll, 0x8CC702081A6439ECll,
0x90BEFFFA23631E28ll, 0xA4506CEBDE82BDE9ll, 0xBEF9A3F7B2C67915ll,
0xC67178F2E372532Bll, 0xCA273ECEEA26619Cll, 0xD186B8C721C0C207ll,
0xEADA7DD6CDE0EB1Ell, 0xF57D4F7FEE6ED178ll, 0x06F067AA72176FBAll,
0x0A637DC5A2C898A6ll, 0x113F9804BEF90DAEll, 0x1B710B35131C471Bll,
0x28DB77F523047D84ll, 0x32CAAB7B40C72493ll, 0x3C9EBE0A15C9BEBCll,
0x431D67C49C100D4Cll, 0x4CC5D4BECB3E42B6ll, 0x597F299CFC657E2All,
0x5FCB6FAB3AD6FAECll, 0x6C44198C4A475817ll
};
int t, t8; /* Loop counter */
uint64_t temp1, temp2; /* Temporary word value */
uint64_t W[80]; /* Word sequence */
uint64_t A, B, C, D, E, F, G, H; /* Word buffers */
/*
* Initialize the first 16 words in the array W
*/
for (t = t8 = 0; t < 16; t++, t8 += 8)
W[t] = ((uint64_t)(context->Message_Block[t8 ]) << 56) |
((uint64_t)(context->Message_Block[t8 + 1]) << 48) |
((uint64_t)(context->Message_Block[t8 + 2]) << 40) |
((uint64_t)(context->Message_Block[t8 + 3]) << 32) |
((uint64_t)(context->Message_Block[t8 + 4]) << 24) |
((uint64_t)(context->Message_Block[t8 + 5]) << 16) |
((uint64_t)(context->Message_Block[t8 + 6]) << 8) |
((uint64_t)(context->Message_Block[t8 + 7]));
for (t = 16; t < 80; t++)
W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
SHA512_sigma0(W[t-15]) + W[t-16];
A = context->Intermediate_Hash[0];
B = context->Intermediate_Hash[1];
C = context->Intermediate_Hash[2];
D = context->Intermediate_Hash[3];
E = context->Intermediate_Hash[4];
F = context->Intermediate_Hash[5];
G = context->Intermediate_Hash[6];
H = context->Intermediate_Hash[7];
for (t = 0; t < 80; t++) {
temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
H = G;
G = F;
F = E;
E = D + temp1;
D = C;
C = B;
B = A;
A = temp1 + temp2;
}
context->Intermediate_Hash[0] += A;
context->Intermediate_Hash[1] += B;
context->Intermediate_Hash[2] += C;
context->Intermediate_Hash[3] += D;
context->Intermediate_Hash[4] += E;
context->Intermediate_Hash[5] += F;
context->Intermediate_Hash[6] += G;
context->Intermediate_Hash[7] += H;
#endif /* USE_32BIT_ONLY */
context->Message_Block_Index = 0;
}
/*
* SHA384_512Finalize
*
* Description:
* This helper function finishes off the digest calculations.
*
* Parameters:
* context: [in/out]
* The SHA context to update.
* Pad_Byte: [in]
* The last byte to add to the message block before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* sha Error Code.
*
*/
static void SHA384_512Finalize(SHA512Context *context,
uint8_t Pad_Byte)
{
int_least16_t i;
SHA384_512PadMessage(context, Pad_Byte);
/* message may be sensitive, clear it out */
for (i = 0; i < SHA512_Message_Block_Size; ++i)
context->Message_Block[i] = 0;
#ifdef USE_32BIT_ONLY /* and clear length */
context->Length[0] = context->Length[1] = 0;
context->Length[2] = context->Length[3] = 0;
#else /* !USE_32BIT_ONLY */
context->Length_High = context->Length_Low = 0;
#endif /* USE_32BIT_ONLY */
context->Computed = 1;
}
/*
* SHA384_512PadMessage
*
* Description:
* According to the standard, the message must be padded to the next
* even multiple of 1024 bits. The first padding bit must be a '1'.
* The last 128 bits represent the length of the original message.
* All bits in between should be 0. This helper function will
* pad the message according to those rules by filling the
* Message_Block array accordingly. When it returns, it can be
* assumed that the message digest has been computed.
*
* Parameters:
* context: [in/out]
* The context to pad.
* Pad_Byte: [in]
* The last byte to add to the message block before the 0-padding
* and length. This will contain the last bits of the message
* followed by another single bit. If the message was an
* exact multiple of 8-bits long, Pad_Byte will be 0x80.
*
* Returns:
* Nothing.
*
*/
static void SHA384_512PadMessage(SHA512Context *context,
uint8_t Pad_Byte)
{
/*
* Check to see if the current message block is too small to hold
* the initial padding bits and length. If so, we will pad the
* block, process it, and then continue padding into a second
* block.
*/
if (context->Message_Block_Index >= (SHA512_Message_Block_Size-16)) {
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < SHA512_Message_Block_Size)
context->Message_Block[context->Message_Block_Index++] = 0;
SHA384_512ProcessMessageBlock(context);
} else
context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
while (context->Message_Block_Index < (SHA512_Message_Block_Size-16))
context->Message_Block[context->Message_Block_Index++] = 0;
/*
* Store the message length as the last 16 octets
*/
#ifdef USE_32BIT_ONLY
context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24);
context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16);
context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8);
context->Message_Block[115] = (uint8_t)(context->Length[0]);
context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24);
context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16);
context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8);
context->Message_Block[119] = (uint8_t)(context->Length[1]);
context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24);
context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16);
context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8);
context->Message_Block[123] = (uint8_t)(context->Length[2]);
context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24);
context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16);
context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8);
context->Message_Block[127] = (uint8_t)(context->Length[3]);
#else /* !USE_32BIT_ONLY */
context->Message_Block[112] = (uint8_t)(context->Length_High >> 56);
context->Message_Block[113] = (uint8_t)(context->Length_High >> 48);
context->Message_Block[114] = (uint8_t)(context->Length_High >> 40);
context->Message_Block[115] = (uint8_t)(context->Length_High >> 32);
context->Message_Block[116] = (uint8_t)(context->Length_High >> 24);
context->Message_Block[117] = (uint8_t)(context->Length_High >> 16);
context->Message_Block[118] = (uint8_t)(context->Length_High >> 8);
context->Message_Block[119] = (uint8_t)(context->Length_High);
context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56);
context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48);
context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40);
context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32);
context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24);
context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16);
context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8);
context->Message_Block[127] = (uint8_t)(context->Length_Low);
#endif /* USE_32BIT_ONLY */
SHA384_512ProcessMessageBlock(context);
}
/*
* SHA384_512ResultN
*
* Description:
* This helper function will return the 384-bit or 512-bit message
* digest into the Message_Digest array provided by the caller.
* NOTE:
* The first octet of hash is stored in the element with index 0,
* the last octet of hash in the element with index 47/63.
*
* Parameters:
* context: [in/out]
* The context to use to calculate the SHA hash.
* Message_Digest[ ]: [out]
* Where the digest is returned.
* HashSize: [in]
* The size of the hash, either 48 or 64.
*
* Returns:
* sha Error Code.
*
*/
static int SHA384_512ResultN(SHA512Context *context,
uint8_t Message_Digest[ ], int HashSize)
{