public TaprootSignature SignTaprootKeySpend(uint256 hash, TaprootSigHash sigHash)
{
if (hash == null)
{
throw new ArgumentNullException(nameof(hash));
}
return(Key.SignTaprootKeySpend(hash, PubKey.MerkleRoot, sigHash));
}
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 TaprootSignature SignTaprootKeySpend(uint256 hash, uint256?merkleRoot, uint256?aux, TaprootSigHash sigHash)
{
if (hash == null)
{
throw new ArgumentNullException(nameof(hash));
}
AssertNotDisposed();
var eckey = _ECKey;
if (PubKey.Parity)
{
eckey = new Secp256k1.ECPrivKey(_ECKey.sec.Negate(), _ECKey.ctx, true);
}
Span <byte> buf = stackalloc byte[32];
TaprootFullPubKey.ComputeTapTweak(PubKey.TaprootInternalKey, merkleRoot, buf);
eckey = eckey.TweakAdd(buf);
hash.ToBytes(buf);
var sig = aux?.ToBytes() is byte[] auxbytes?eckey.SignBIP340(buf, auxbytes) : eckey.SignBIP340(buf);
return(new TaprootSignature(new SchnorrSignature(sig), sigHash));
}
public TaprootSignature SignTaprootKeySpend(uint256 hash, uint256?merkleRoot, TaprootSigHash sigHash)
{
return(SignTaprootKeySpend(hash, merkleRoot, null, sigHash));
}
public TaprootSignature SignTaprootKeySpend(uint256 hash, TaprootSigHash sigHash = TaprootSigHash.Default)
{
return(SignTaprootKeySpend(hash, null, sigHash));
}
