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Hash the message before the challenge function in the Schnorr contract

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Slightly more efficient.
This commit is contained in:
Luke Parker 2024-09-17 01:04:22 -04:00
parent cc75a92641
commit 7feb7aed22
3 changed files with 3 additions and 3 deletions
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2
networks/ethereum/schnorr/contracts/Schnorr.sol
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@ -15,7 +15,7 @@ library Schnorr {
// message := the message signed // message := the message signed
// c := Schnorr signature challenge // c := Schnorr signature challenge
// s := Schnorr signature solution // s := Schnorr signature solution
function verify(bytes32 px, bytes memory message, bytes32 c, bytes32 s) function verify(bytes32 px, bytes32 message, bytes32 c, bytes32 s)
internal internal
pure pure
returns (bool) returns (bool)

2
networks/ethereum/schnorr/contracts/tests/Schnorr.sol
View file

@ -9,6 +9,6 @@ contract TestSchnorr {
pure pure
returns (bool) returns (bool)
{ {
return Schnorr.verify(public_key, message, c, s); return Schnorr.verify(public_key, keccak256(message), c, s);
} }
} }

2
networks/ethereum/schnorr/src/signature.rs
View file

@ -38,7 +38,7 @@ impl Signature {
&Keccak256::digest(x_and_y_coordinates)[12 ..] &Keccak256::digest(x_and_y_coordinates)[12 ..]
}); });
hash.update(key.eth_repr()); hash.update(key.eth_repr());
hash.update(message); hash.update(Keccak256::digest(message));
<Scalar as Reduce<KU256>>::reduce_bytes(&hash.finalize()) <Scalar as Reduce<KU256>>::reduce_bytes(&hash.finalize())
} }