waalge
/
aiken
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed schnorr and limiting it to 32 bytes messages for now

This commit is contained in:
alessandrokonrad 2023-02-08 10:36:26 +01:00 committed by Lucas
parent 477c938cbb
commit ce648b7483
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
crates/uplc/src/machine/runtime.rs
View File

@ -1163,6 +1163,8 @@ fn verify_ecdsa(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<R
Ok(Value::Con(Constant::Bool(valid.is_ok()).into()).into()) Ok(Value::Con(Constant::Bool(valid.is_ok()).into()).into())
} }
/// Unlike the Haskell implementation the schnorr verification function in Aiken doesn't allow for arbitrary message sizes (at the moment).
/// The message needs to be 32 bytes (ideally prehashed, but not a requirement).
#[cfg(not(feature = "native-secp256k1"))] #[cfg(not(feature = "native-secp256k1"))]
fn verify_schnorr(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<Rc<Value>, Error> { fn verify_schnorr(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<Rc<Value>, Error> {
use secp256k1::{schnorr::Signature, Message, Secp256k1, XOnlyPublicKey}; use secp256k1::{schnorr::Signature, Message, Secp256k1, XOnlyPublicKey};
@ -1195,13 +1197,13 @@ fn verify_ecdsa(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<R
#[cfg(feature = "native-secp256k1")] #[cfg(feature = "native-secp256k1")]
fn verify_schnorr(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<Rc<Value>, Error> { fn verify_schnorr(public_key: &[u8], message: &[u8], signature: &[u8]) -> Result<Rc<Value>, Error> {
use k256::schnorr::{self, signature::Verifier}; use k256::schnorr::{self, signature::hazmat::PrehashVerifier};
let verifying_key = schnorr::VerifyingKey::from_bytes(public_key)?; let verifying_key = schnorr::VerifyingKey::from_bytes(public_key)?;
let signature = schnorr::Signature::try_from(signature)?; let signature = schnorr::Signature::try_from(signature)?;
let valid = verifying_key.verify(message, &signature); let valid = verifying_key.verify_prehash(message, &signature);
Ok(Value::Con(Constant::Bool(valid.is_ok()).into()).into()) Ok(Value::Con(Constant::Bool(valid.is_ok()).into()).into())
} }