fixed size ref

Author: mrain

hotshot-types/src/data.rs

@@ -298,6 +298,15 @@ impl AsRef<[u8]> for VidCommitment {
     }
 }
 
+impl AsRef<[u8; 32]> for VidCommitment {
+    fn as_ref(&self) -> &[u8; 32] {
+        match self {
+            Self::V0(comm) => comm.as_ref().as_ref(),
+            Self::V1(comm) => comm.as_ref(),
+        }
+    }
+}
+
 impl VidCommitment {
     /// Unwrap an ADVZCommitment. Panic if incorrect version.
     pub fn unwrap_v0(self) -> ADVZCommitment {

types/src/reference_tests.rs

@@ -158,7 +158,7 @@ async fn reference_header(version: Version) -> Header {
 
 const REFERENCE_V1_HEADER_COMMITMENT: &str = "BLOCK~dh1KpdvvxSvnnPpOi2yI3DOg8h6ltr2Kv13iRzbQvtN2";
 const REFERENCE_V2_HEADER_COMMITMENT: &str = "BLOCK~V0GJjL19nCrlm9n1zZ6gaOKEekSMCT6uR5P-h7Gi6UJR";
-const REFERENCE_V99_HEADER_COMMITMENT: &str = "BLOCK~q_3j4RuQMmxNx0JQbeapzFon4oyYO1F8vZdbLftwCBYP";
+const REFERENCE_V99_HEADER_COMMITMENT: &str = "BLOCK~0yvjXWEW6T3sZiM3-bT-k7X_PuZo_lCDeBmdeYjoEMvo";
 
 fn reference_transaction<R>(ns_id: NamespaceId, rng: &mut R) -> Transaction
 where

types/src/v0/impls/header.rs

@@ -58,7 +58,7 @@ impl v0_1::Header {
             .u64_field("l1_head", self.l1_head)
             .optional("l1_finalized", &self.l1_finalized)
             .constant_str("payload_commitment")
-            .var_size_bytes(self.payload_commitment.as_ref())
+            .fixed_size_bytes(self.payload_commitment.as_ref())
             .constant_str("builder_commitment")
             .fixed_size_bytes(self.builder_commitment.as_ref())
             .field("ns_table", self.ns_table.commit())

types/src/v0/v0_1/header.rs

@@ -54,7 +54,7 @@ impl Committable for Header {
             .u64_field("l1_head", self.l1_head)
             .optional("l1_finalized", &self.l1_finalized)
             .constant_str("payload_commitment")
-            .var_size_bytes(self.payload_commitment.as_ref())
+            .fixed_size_bytes(self.payload_commitment.as_ref())
             .constant_str("builder_commitment")
             .fixed_size_bytes(self.builder_commitment.as_ref())
             .field("ns_table", self.ns_table.commit())

types/src/v0/v0_99/header.rs

@@ -45,7 +45,7 @@ impl Committable for Header {
             .u64_field("l1_head", self.l1_head)
             .optional("l1_finalized", &self.l1_finalized)
             .constant_str("payload_commitment")
-            .var_size_bytes(self.payload_commitment.as_ref())
+            .fixed_size_bytes(self.payload_commitment.as_ref())
             .constant_str("builder_commitment")
             .fixed_size_bytes(self.builder_commitment.as_ref())
             .field("ns_table", self.ns_table.commit())

vid/src/avid_m.rs

@@ -77,6 +77,14 @@ impl AsRef<[u8]> for AvidMCommit {
     }
 }
 
+impl AsRef<[u8; 32]> for AvidMCommit {
+    fn as_ref(&self) -> &[u8; 32] {
+        unsafe { ::core::slice::from_raw_parts((self as *const Self) as *const u8, 32) }
+            .try_into()
+            .unwrap()
+    }
+}
+
 /// Share type to be distributed among the parties.
 #[derive(Clone, Debug, Hash, Serialize, Deserialize, Eq, PartialEq)]
 pub struct RawAvidMShare {