adds hash domain to merkle shreds

solana-labs · Jan 8, 2023 · 46048c3 · 46048c3
1 parent 8c212f5
commit 46048c3
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/ledger/src/shred/merkle.rs b/ledger/src/shred/merkle.rs
@@ -43,8 +43,8 @@ const_assert_eq!(ShredData::SIZE_OF_PAYLOAD, 1203);
 
 // Defense against second preimage attack:
 // https://en.wikipedia.org/wiki/Merkle_tree#Second_preimage_attack
-const MERKLE_HASH_PREFIX_LEAF: &[u8] = &[0x00];
-const MERKLE_HASH_PREFIX_NODE: &[u8] = &[0x01];
+const MERKLE_HASH_PREFIX_LEAF: &[u8] = b"\x00SOLANA_MERKLE_SHREDS_LEAF";
+const MERKLE_HASH_PREFIX_NODE: &[u8] = b"\x01SOLANA_MERKLE_SHREDS_NODE";
 
 pub(crate) type MerkleRoot = MerkleProofEntry;
 type MerkleProofEntry = [u8; 20];