Add domain to all signature funcitons, modify validate_proof_of_possession()

eth2/utils/bls/src/aggregate_signature.rs

@@ -27,8 +27,8 @@ impl AggregateSignature {
     ///
     /// Only returns `true` if the set of keys in the `AggregatePublicKey` match the set of keys
     /// that signed the `AggregateSignature`.
-    pub fn verify(&self, msg: &[u8], aggregate_public_key: &AggregatePublicKey) -> bool {
-        self.0.verify(msg, aggregate_public_key)
+    pub fn verify(&self, msg: &[u8], domain: u64, aggregate_public_key: &AggregatePublicKey) -> bool {
+        self.0.verify(msg, domain, aggregate_public_key)
     }
 }
 
@@ -73,7 +73,7 @@ mod tests {
         let keypair = Keypair::random();
 
         let mut original = AggregateSignature::new();
-        original.add(&Signature::new(&[42, 42], &keypair.sk));
+        original.add(&Signature::new(&[42, 42], 0, &keypair.sk));
 
         let bytes = ssz_encode(&original);
         let (decoded, _) = AggregateSignature::ssz_decode(&bytes, 0).unwrap();