public void TestStdSignVerify()
{
IPrivateKey privateKey = _wrapper.GeneratePrivateKey();
byte[] message = Encoding.UTF8.GetBytes("fa la la la");
byte[] context = Encoding.UTF8.GetBytes("context");
ISignature signature = _wrapper.Sign(privateKey, message, context);
bool isVerified = _wrapper.Verify(signature, message, context);
isVerified.Should().BeTrue();
}
public void TestFailureSigningVerification()
{
var key1 = _context.GeneratePrivateKey();
var data = Encoding.UTF8.GetBytes("Testing testing 1 2 3");
var signingContext = Encoding.UTF8.GetBytes("Testing testing 1 2 3 context");
var signature = _context.Sign(key1, data, signingContext);
var key2 = _context.GeneratePrivateKey();
var publicKey2 = _context.GetPublicKeyFromPrivateKey(key2);
var invalidSignature = _context.GetSignatureFromBytes(signature.SignatureBytes, publicKey2.Bytes);
_context.Verify(invalidSignature, data, signingContext)
.Should().BeFalse("signature should not verify with incorrect key");
}
public static TransactionBroadcast Sign(this TransactionBroadcast transaction,
ICryptoContext cryptoContext,
IPrivateKey privateKey,
SigningContext context)
{
var clone = transaction.Clone();
if (transaction.Signature?.RawBytes.Length == cryptoContext.SignatureLength)
{
Logger.Debug("The transaction was already signed, returning a clone.");
return(clone);
}
clone.Signature = null;
var signatureBytes = cryptoContext.Sign(privateKey, clone.ToByteArray(),
context.ToByteArray()).SignatureBytes;
clone.Signature = new Signature
{
RawBytes = signatureBytes.ToByteString(),
SigningContext = context
};
return(clone);
}
public ISignature Sign(ReadOnlySpan <byte> data, SigningContext signingContext)
{
var privateKey = GetPrivateKey(KeyRegistryTypes.DefaultKey);
using var pooled = signingContext.SerializeToPooledBytes();
return(_cryptoContext.Sign(privateKey, data, pooled.Span));
}
private static Signature GeneratePublicEntrySignature(PublicEntry publicEntry,
ICryptoContext cryptoContext,
IPrivateKey privateKey,
SigningContext context)
{
publicEntry.Signature = null;
var signatureBytes = cryptoContext.Sign(privateKey, publicEntry.ToByteArray(),
context.ToByteArray()).SignatureBytes;
return(new Signature
{
RawBytes = signatureBytes.ToByteString(),
SigningContext = context
});
}
/// <summary>
/// Signs message using provided private key and returns the signature.
/// </summary>
/// <param name="crypto"></param>
/// <param name="privateKey"></param>
/// <param name="message"></param>
/// <param name="context"></param>
/// <returns></returns>
public static ISignature Sign(this ICryptoContext crypto, IPrivateKey privateKey, IMessage message, IMessage context)
{
ProtoPreconditions.CheckNotNull(message, nameof(message));
ProtoPreconditions.CheckNotNull(context, nameof(context));
var messageSize = message.CalculateSize();
var contextSize = context.CalculateSize();
var array = ArrayPool <byte> .Shared.Rent(messageSize + contextSize);
using (var output = new CodedOutputStream(array))
{
message.WriteTo(output);
context.WriteTo(output);
}
var signature = crypto.Sign(privateKey, array.AsSpan(0, messageSize), array.AsSpan(messageSize, contextSize));
ArrayPool <byte> .Shared.Return(array);
return(signature);
}
private ISignature Sign(byte[] data, SigningContext signingContext, IPrivateKey privateKey)
{
return(_cryptoContext.Sign(privateKey, data, signingContext.ToByteArray()));
}