public void BlsRoundtripSignAndVerify()
{
// Arrange
var privateKey = HexMate.Convert.FromHexString(PrivateKeys[1]);
var messageHash = MessageHashes[0];
var domain = Domains[0];
Console.WriteLine("Input:");
Console.WriteLine("Private Key: [{0}] {1}", privateKey.Length, HexMate.Convert.ToHexString(privateKey));
Console.WriteLine("Domain: [{0}] {1}", domain.Length, HexMate.Convert.ToHexString(domain));
Console.WriteLine("MessageHash: [{0}] {1}", messageHash.Length, HexMate.Convert.ToHexString(messageHash));
// Act
var parameters = new BLSParameters()
{
PrivateKey = privateKey
};
using var bls = new BLSHerumi(parameters);
var publicKey = new byte[48];
_ = bls.TryExportBLSPublicKey(publicKey, out var _);
Console.WriteLine("Public Key: [{0}] {1}", publicKey.Length, HexMate.Convert.ToHexString(publicKey));
var initialX = new byte[96];
_ = bls.TryCombineHashAndDomain(messageHash, domain, initialX, out var _);
Console.WriteLine("InitialX: [{0}] {1}", initialX.Length, HexMate.Convert.ToHexString(initialX));
var signature = new byte[96];
var signatureSuccess = bls.TrySignHash(initialX, signature.AsSpan(), out var bytesWritten);
Console.WriteLine("Signature: {0} [{1}] {2}", signatureSuccess, bytesWritten, HexMate.Convert.ToHexString(signature));
//var expectedSignature = HexMate.Convert.FromHexString("b9d1bf921b3dd048bdce38c2ceac2a2a8093c864881f2415f22b198de935ffa791707855c1656dc21a7af2d502bb46590151d645f062634c3b2cb79c4ed1c4a4b8b3f19f0f5c76965c651553e83d153ff95353735156eff77692f7a62ae653fb");
//signature.ShouldBe(expectedSignature);
var verifySuccess = bls.VerifyHash(initialX, signature);
Console.WriteLine("Verify1: {0}", verifySuccess);
var parameters2 = new BLSParameters()
{
PublicKey = publicKey
};
using var bls2 = new BLSHerumi(parameters);
var verifySuccess2 = bls2.VerifyHash(initialX, signature);
Console.WriteLine("Verify2: {0}", verifySuccess2);
verifySuccess2.ShouldBeTrue();
}
public void Case05VerifyMessages(byte[] publicKey, byte[] messageHash, byte[] domain, byte[] signature, bool expected)
{
// Arrange
var parameters = new BLSParameters()
{
PublicKey = publicKey
};
Console.WriteLine("Input:");
Console.WriteLine("Public Key: [{0}] {1}", publicKey.Length, HexMate.Convert.ToHexString(publicKey));
Console.WriteLine("MessageHash: [{0}] {1}", messageHash.Length, HexMate.Convert.ToHexString(messageHash));
Console.WriteLine("Domain: [{0}] {1}", domain.Length, HexMate.Convert.ToHexString(domain));
Console.WriteLine("Signature: [{0}] {1}", signature.Length, HexMate.Convert.ToHexString(signature));
// Act
using var bls = new BLSHerumi(parameters);
var success = bls.VerifyHash(messageHash, signature, domain);
Console.WriteLine("Output: Success {0}", success);
// Assert
success.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();
}