public static Signature GenerateSignature(this PublicEntry publicEntry,
ICryptoContext cryptoContext,
IPrivateKey privateKey,
SigningContext context)
{
return(GeneratePublicEntrySignature(publicEntry.Clone(), cryptoContext, privateKey, context));
}
private bool ValidateTransactionSignature(PublicEntry transaction)
{
if (transaction.Signature.RawBytes == ByteString.Empty)
{
_logger.Error("Transaction signature is null");
return(false);
}
var transactionSignature = _cryptoContext.GetSignatureFromBytes(transaction.Signature.RawBytes.ToByteArray(),
transaction.SenderAddress.ToByteArray());
var signingContext = transaction.Signature.SigningContext.ToByteArray();
// we need to verify the signature matches the message, but transactionBroadcast contains the signature and original data,
// passing message+sig will mean your verifying an incorrect message and always return false, so just null the sig.
var transactionClone = transaction.Clone();
transactionClone.Signature = null;
if (_cryptoContext.Verify(transactionSignature, transactionClone.ToByteArray(), signingContext))
{
return(true);
}
_logger.Information(
"Transaction Signature {signature} invalid.",
transactionSignature);
return(false);
}
public static PublicEntry Sign(this PublicEntry publicEntry,
ICryptoContext cryptoContext,
IPrivateKey privateKey,
SigningContext context)
{
var clone = publicEntry.Clone();
if (publicEntry.Signature?.RawBytes.Length == cryptoContext.SignatureLength)
{
Logger.Debug("The transaction was already signed, returning a clone.");
return(clone);
}
clone.Signature = GeneratePublicEntrySignature(clone, cryptoContext, privateKey, context);
return(clone);
}