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remove getTweakedOutputKeyNEW()

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Toporin 2023-09-06 11:35:35 +01:00
parent 2c2db1d644
commit 83d9dde132
1 changed files with 0 additions and 25 deletions
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25
src/main/java/com/sparrowwallet/drongo/crypto/ECKey.java
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@ -435,31 +435,6 @@ public class ECKey {
return verify(sigHash.getBytes(), signature);
}
public ECKey getTweakedOutputKeyNEW() {
TaprootPubKey taprootPubKey = liftX(getPubKeyXCoord());
ECPoint internalKey = taprootPubKey.ecPoint;
byte[] taggedHash = Utils.taggedHash("TapTweak", internalKey.getXCoord().getEncoded());
ECKey tweakValue = ECKey.fromPrivate(taggedHash);
ECPoint outputKey = internalKey.add(tweakValue.getPubKeyPoint());
if(hasPrivKey()) {
// isEven => used to determine private key for tweaking
// see taproot_tweak_seckey(seckey0, h) in
// https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki#constructing-and-spending-taproot-outputs
Boolean isEven = (getPubKey()[0] == 0x02);
BigInteger taprootPriv;
if (isEven){
taprootPriv = priv;
} else {
taprootPriv = CURVE_PARAMS.getCurve().getOrder().subtract(priv);
}
BigInteger tweakedPrivKey = taprootPriv.add(tweakValue.getPrivKey()).mod(CURVE_PARAMS.getCurve().getOrder());
return new ECKey(tweakedPrivKey, outputKey, true);
}
return ECKey.fromPublicOnly(outputKey, true);
}
public ECKey getTweakedOutputKey() {
TaprootPubKey taprootPubKey = liftX(getPubKeyXCoord());
ECPoint internalKey = taprootPubKey.ecPoint;