/// <summary>
/// Adds a new sha256Hash signature to this transaction by revealing preimage.
/// </summary>
/// <param name="preimage">the sha256 hash of preimage should be equal to signer hash</param>
public void Sign(byte[] preimage)
{
Signature signature = new Signature
{
InnerValue = preimage ?? throw new ArgumentNullException(nameof(preimage), "preimage cannot be null")
};
byte[] hash = Util.Hash(preimage);
int length = hash.Length;
byte[] signatureHintBytes = hash.Skip(length - 4).Take(4).ToArray();
SignatureHint signatureHint = new SignatureHint {
InnerValue = signatureHintBytes
};
DecoratedSignature decoratedSignature = new DecoratedSignature
{
Hint = signatureHint,
Signature = signature
};
Signatures.Add(decoratedSignature);
}
public static DecoratedSignature Decode(IByteReader stream)
{
DecoratedSignature decodedDecoratedSignature = new DecoratedSignature();
decodedDecoratedSignature.Hint = SignatureHint.Decode(stream);
decodedDecoratedSignature.Signature = Signature.Decode(stream);
return decodedDecoratedSignature;
}
public static DecoratedSignature Decode(XdrDataInputStream stream)
{
DecoratedSignature decodedDecoratedSignature = new DecoratedSignature();
decodedDecoratedSignature.Hint = SignatureHint.Decode(stream);
decodedDecoratedSignature.Signature = Signature.Decode(stream);
return(decodedDecoratedSignature);
}
public static DecoratedSignature Decode(IByteReader stream)
{
DecoratedSignature decodedDecoratedSignature = new DecoratedSignature();
decodedDecoratedSignature.Hint = SignatureHint.Decode(stream);
decodedDecoratedSignature.Signature = Signature.Decode(stream);
return(decodedDecoratedSignature);
}
public static void Encode(XdrDataOutputStream stream, TransactionV0Envelope encodedTransactionV0Envelope)
{
TransactionV0.Encode(stream, encodedTransactionV0Envelope.Tx);
int signaturessize = encodedTransactionV0Envelope.Signatures.Length;
stream.WriteInt(signaturessize);
for (int i = 0; i < signaturessize; i++)
{
DecoratedSignature.Encode(stream, encodedTransactionV0Envelope.Signatures[i]);
}
}
public static void Encode(IByteWriter stream, TransactionEnvelope encodedTransactionEnvelope)
{
Transaction.Encode(stream, encodedTransactionEnvelope.Tx);
int signaturessize = encodedTransactionEnvelope.Signatures.Length;
XdrEncoding.EncodeInt32(signaturessize, stream);
for (int i = 0; i < signaturessize; i++)
{
DecoratedSignature.Encode(stream, encodedTransactionEnvelope.Signatures[i]);
}
}
public static TransactionV0Envelope Decode(XdrDataInputStream stream)
{
TransactionV0Envelope decodedTransactionV0Envelope = new TransactionV0Envelope();
decodedTransactionV0Envelope.Tx = TransactionV0.Decode(stream);
int signaturessize = stream.ReadInt();
decodedTransactionV0Envelope.Signatures = new DecoratedSignature[signaturessize];
for (int i = 0; i < signaturessize; i++)
{
decodedTransactionV0Envelope.Signatures[i] = DecoratedSignature.Decode(stream);
}
return(decodedTransactionV0Envelope);
}
public static TransactionEnvelope Decode(IByteReader stream)
{
TransactionEnvelope decodedTransactionEnvelope = new TransactionEnvelope();
decodedTransactionEnvelope.Tx = Transaction.Decode(stream);
int signaturessize = XdrEncoding.DecodeInt32(stream);
decodedTransactionEnvelope.Signatures = new DecoratedSignature[signaturessize];
for (int i = 0; i < signaturessize; i++)
{
decodedTransactionEnvelope.Signatures[i] = DecoratedSignature.Decode(stream);
}
return(decodedTransactionEnvelope);
}
private string CreateEnvelopeXdrBase64(StellarBase.Generated.Transaction tx, DecoratedSignature signature)
{
var txEnvelope = new TransactionEnvelope
{
Tx = tx,
Signatures = new[] { signature }
};
var writer = new ByteWriter();
TransactionEnvelope.Encode(writer, txEnvelope);
var data = writer.ToArray();
return(Convert.ToBase64String(data));
}
public static void Encode(XdrDataOutputStream stream, DecoratedSignature encodedDecoratedSignature)
{
SignatureHint.Encode(stream, encodedDecoratedSignature.Hint);
Signature.Encode(stream, encodedDecoratedSignature.Signature);
}
public static void Encode(IByteWriter stream, DecoratedSignature encodedDecoratedSignature)
{
SignatureHint.Encode(stream, encodedDecoratedSignature.Hint);
Signature.Encode(stream, encodedDecoratedSignature.Signature);
}
public static void Encode(IByteWriter stream, DecoratedSignature encodedDecoratedSignature)
{
SignatureHint.Encode(stream, encodedDecoratedSignature.Hint);
Signature.Encode(stream, encodedDecoratedSignature.Signature);
}
