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Fix ED25519 signature validation (#1127)

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This commit is contained in:
Andre-Philippe Paquet
2019-05-15 13:06:29 -04:00
committed by Pierre Krieger
parent 3e4715d829
commit 4c20d3134c
1 changed files with 18 additions and 2 deletions
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20
core/src/identity/ed25519.rs
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@ -100,7 +100,7 @@ pub struct PublicKey(ed25519::PublicKey);
impl PublicKey {
/// Verify the Ed25519 signature on a message using the public key.
pub fn verify(&self, msg: &[u8], sig: &[u8]) -> bool {
ed25519::Signature::from_bytes(sig).map(|s| self.0.verify(msg, &s)).is_ok()
ed25519::Signature::from_bytes(sig).and_then(|s| self.0.verify(msg, &s)).is_ok()
}
/// Encode the public key into a byte array in compressed form, i.e.
@ -189,5 +189,21 @@ mod tests {
}
QuickCheck::new().tests(10).quickcheck(prop as fn() -> _);
}
}
#[test]
fn ed25519_signature() {
let kp = Keypair::generate();
let pk = kp.public();
let msg = "hello world".as_bytes();
let sig = kp.sign(msg);
assert!(pk.verify(msg, &sig));
let mut invalid_sig = sig.clone();
invalid_sig[3..6].copy_from_slice(&[10, 23, 42]);
assert!(!pk.verify(msg, &invalid_sig));
let invalid_msg = "h3ll0 w0rld".as_bytes();
assert!(!pk.verify(invalid_msg, &sig));
}
}