public TaprootSignature(SchnorrSignature schnorrSignature, TaprootSigHash sigHash)
{
if (!TaprootExecutionData.IsValidSigHash((byte)sigHash))
{
throw new ArgumentException("Invalid hash_type", nameof(sigHash));
}
if (schnorrSignature == null)
{
throw new ArgumentNullException(nameof(schnorrSignature));
}
SigHash = sigHash;
SchnorrSignature = schnorrSignature;
}
public static bool TryParse(byte[] bytes, [MaybeNullWhen(false)] out TaprootSignature signature)
{
if (bytes == null)
{
throw new ArgumentNullException(nameof(bytes));
}
#if HAS_SPAN
return(TryParse(bytes.AsSpan(), out signature));
#else
if (bytes.Length == 64)
{
if (!SchnorrSignature.TryParse(bytes, out var sig))
{
signature = null;
return(false);
}
signature = new TaprootSignature(sig);
return(true);
}
else if (bytes.Length == 65)
{
if (!TaprootExecutionData.IsValidSigHash(bytes[64]) || bytes[64] == 0)
{
signature = null;
return(false);
}
var sighash = (TaprootSigHash)bytes[64];
if (sighash == TaprootSigHash.Default)
{
signature = null;
return(false);
}
var buff = new byte[64];
Array.Copy(bytes, 0, buff, 0, 64);
if (!SchnorrSignature.TryParse(buff, out var sig))
{
signature = null;
return(false);
}
signature = new TaprootSignature(sig, sighash);
return(true);
}
else
{
signature = null;
return(false);
}
#endif
}
public static bool TryParse(ReadOnlySpan <byte> bytes, [MaybeNullWhen(false)] out TaprootSignature signature)
{
if (bytes.Length == 64)
{
if (!SchnorrSignature.TryParse(bytes, out var sig))
{
signature = null;
return(false);
}
signature = new TaprootSignature(sig);
return(true);
}
else if (bytes.Length == 65)
{
if (!TaprootExecutionData.IsValidSigHash(bytes[64]))
{
signature = null;
return(false);
}
var sighash = (TaprootSigHash)bytes[64];
if (sighash == TaprootSigHash.Default)
{
signature = null;
return(false);
}
if (!SchnorrSignature.TryParse(bytes.Slice(0, 64), out var sig))
{
signature = null;
return(false);
}
signature = new TaprootSignature(sig, sighash);
return(true);
}
else
{
signature = null;
return(false);
}
}
