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();
}
