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Add a context to MuSig key aggregation

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This commit is contained in:
Luke Parker
2023-05-13 04:04:14 -04:00
parent 227176e4b8
commit 663b5f4b50
3 changed files with 19 additions and 11 deletions
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2
crypto/dkg/src/tests/mod.rs
View File

@@ -81,7 +81,7 @@ pub fn musig_key_gen<R: RngCore + CryptoRng, C: Ciphersuite>(
let mut res = HashMap::new();
for key in keys {
let these_keys = musig_fn::<C>(&key, &pub_keys).unwrap();
let these_keys = musig_fn::<C>(b"Test MuSig Key Gen", &key, &pub_keys).unwrap();
res.insert(these_keys.params().i(), ThresholdKeys::new(these_keys));
}

10
crypto/dkg/src/tests/musig.rs
View File

@@ -21,18 +21,20 @@ pub fn test_musig<R: RngCore + CryptoRng, C: Ciphersuite>(rng: &mut R) {
keys.push(key);
}
const CONTEXT: &[u8] = b"MuSig Test";
// Empty signing set
assert!(musig::<C>(&Zeroizing::new(C::F::ZERO), &[]).is_err());
assert!(musig::<C>(CONTEXT, &Zeroizing::new(C::F::ZERO), &[]).is_err());
// Signing set we're not part of
assert!(musig::<C>(&Zeroizing::new(C::F::ZERO), &[C::generator()]).is_err());
assert!(musig::<C>(CONTEXT, &Zeroizing::new(C::F::ZERO), &[C::generator()]).is_err());
// Test with n keys
{
let mut created_keys = HashMap::new();
let mut verification_shares = HashMap::new();
let group_key = musig_key::<C>(&pub_keys).unwrap();
let group_key = musig_key::<C>(CONTEXT, &pub_keys).unwrap();
for (i, key) in keys.iter().enumerate() {
let these_keys = musig::<C>(key, &pub_keys).unwrap();
let these_keys = musig::<C>(CONTEXT, key, &pub_keys).unwrap();
assert_eq!(these_keys.params().t(), PARTICIPANTS);
assert_eq!(these_keys.params().n(), PARTICIPANTS);
assert_eq!(usize::from(these_keys.params().i().0), i + 1);