/// <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);
}
/// <summary>
/// Returns transaction hash.
/// </summary>
/// <returns></returns>
public byte[] Hash()
{
return Util.Hash(SignatureBase());
}
/// <summary>
/// Returns transaction hash for the given network.
/// </summary>
/// <param name="network">The network <see cref="Network" /> the transaction will be sent to.</param>
/// <returns></returns>
public byte[] Hash(Network network)
{
return(Util.Hash(SignatureBase(network)));
}
