public void Case07AggregatePublicKeys(byte[][] publicKeys, byte[] expected) { // Arrange var inputSpan = new Span <byte>(new byte[publicKeys.Length * 48]); Console.WriteLine("Input: [{0}]", publicKeys.Length); for (var index = 0; index < publicKeys.Length; index++) { publicKeys[index].CopyTo(inputSpan.Slice(index * 48)); Console.WriteLine("Public Key({0}): [{1}] {2}", index, publicKeys[index].Length, HexMate.Convert.ToHexString(publicKeys[index])); } // Act using var bls = new BLSHerumi(new BLSParameters()); var result = new byte[48]; var success = bls.TryAggregatePublicKeys(inputSpan, result, out var bytesWritten); Console.WriteLine("Output:"); Console.WriteLine("Combined: {0} [{1}] {2}", success, bytesWritten, HexMate.Convert.ToHexString(result)); // Assert result.ShouldBe(expected); }
public void BlsRoundtripAggregatePublicKeyVerifySharedHash() { // Arrange var privateKey1 = HexMate.Convert.FromHexString(PrivateKeys[1]); var privateKey2 = HexMate.Convert.FromHexString(PrivateKeys[2]); var sharedMessageHash = MessageHashes[1]; var domain1 = Domains[1]; Console.WriteLine("Input:"); Console.WriteLine("Private Key 1: [{0}] {1}", privateKey1.Length, HexMate.Convert.ToHexString(privateKey1)); Console.WriteLine("Private Key 2: [{0}] {1}", privateKey2.Length, HexMate.Convert.ToHexString(privateKey2)); Console.WriteLine("MessageHash 1: [{0}] {1}", sharedMessageHash.Length, HexMate.Convert.ToHexString(sharedMessageHash)); Console.WriteLine("Domain: [{0}] {1}", domain1.Length, HexMate.Convert.ToHexString(domain1)); // Sign 1 using var bls1 = new BLSHerumi(new BLSParameters() { PrivateKey = privateKey1 }); var signature1 = new byte[96]; _ = bls1.TrySignHash(sharedMessageHash, signature1.AsSpan(), out var _, domain1); Console.WriteLine("Signature 1: [{0}] {1}", signature1.Length, HexMate.Convert.ToHexString(signature1)); var publicKey1 = new byte[48]; _ = bls1.TryExportBlsPublicKey(publicKey1, out var _); Console.WriteLine("Public Key 1: [{0}] {1}", publicKey1.Length, HexMate.Convert.ToHexString(publicKey1)); // Sign 2 using var bls2 = new BLSHerumi(new BLSParameters() { PrivateKey = privateKey2 }); var signature2 = new byte[96]; _ = bls2.TrySignHash(sharedMessageHash, signature2.AsSpan(), out var _, domain1); Console.WriteLine("Signature 2: [{0}] {1}", signature2.Length, HexMate.Convert.ToHexString(signature2)); var publicKey2 = new byte[48]; _ = bls2.TryExportBlsPublicKey(publicKey2, out var _); Console.WriteLine("Public Key 2: [{0}] {1}", publicKey2.Length, HexMate.Convert.ToHexString(publicKey2)); // Aggregate public keys var publicKeys = new Span <byte>(new byte[48 * 2]); publicKey1.CopyTo(publicKeys); publicKey2.CopyTo(publicKeys.Slice(48)); using var blsAggregateKeys = new BLSHerumi(new BLSParameters()); var aggregatePublicKey = new byte[48]; blsAggregateKeys.TryAggregatePublicKeys(publicKeys, aggregatePublicKey, out var _); Console.WriteLine("Aggregate Public Key: [{0}] {1}", aggregatePublicKey.Length, HexMate.Convert.ToHexString(aggregatePublicKey)); // Aggregate signatures var signatures = new Span <byte>(new byte[96 * 2]); signature1.CopyTo(signatures); signature2.CopyTo(signatures.Slice(96)); using var blsAggregate = new BLSHerumi(new BLSParameters()); var aggregateSignature = new byte[96]; blsAggregate.TryAggregateSignatures(signatures, aggregateSignature, out var _); Console.WriteLine("Aggregate Signature: [{0}] {1}", aggregateSignature.Length, HexMate.Convert.ToHexString(aggregateSignature)); // Verify aggregates // i.e. the combined aggregatePublicKey / aggregateSignature are a valid pair var aggregatePublicKeyParameters = new BLSParameters() { PublicKey = aggregatePublicKey }; using var blsVerify = new BLSHerumi(aggregatePublicKeyParameters); var verifySuccess = blsVerify.VerifyHash(sharedMessageHash, aggregateSignature, domain1); Console.WriteLine("Verify: {0}", verifySuccess); verifySuccess.ShouldBeTrue(); }