public bool CheckTapTweak(TaprootInternalPubKey internalPubKey, uint256?merkleRoot, bool parity)
{
if (internalPubKey is null)
{
throw new ArgumentNullException(nameof(internalPubKey));
}
Span <byte> tweak32 = stackalloc byte[32];
TaprootFullPubKey.ComputeTapTweak(internalPubKey, merkleRoot, tweak32);
return(this.pubkey.CheckIsTweakedWith(internalPubKey.pubkey, tweak32, parity));
}
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 TaprootFullPubKey GetTaprootFullPubKey(uint256?merkleRoot)
{
return(TaprootFullPubKey.Create(this, merkleRoot));
}
public TaprootKeyPair(Key key, TaprootFullPubKey pubKey) : base(key, pubKey)
{
Key = key;
PubKey = pubKey;
}