在BitcoinJ Java中从WIF生成P2SH比特币地址

Question

我正在尝试从WIF私钥创建P2SH Segwit比特币地址。我正在使用Java中的BitcoinJ库。请参阅以下代码。

String base58PrivateKeyString = "KyyJ5vVWjZck5nsAgDWvoN1u7Q8qp5FzE8WiCq97MbnRgdLesqJZ";
NetworkParameters params = MainNetParams.get();
ECKey key;
if (base58PrivateKeyString.length() == 51 || base58PrivateKeyString.length() == 52) {
DumpedPrivateKey dumpedPrivateKey = DumpedPrivateKey.fromBase58(params, base58PrivateKeyString);
key = dumpedPrivateKey.getKey();
} else {
BigInteger privKey = Base58.decodeToBigInteger(base58PrivateKeyString);
key = ECKey.fromPrivate(privKey);
}
// Getting the public key
String pubKeyStr = key.getPublicKeyAsHex();
System.out.println("Public key is: " + pubKeyStr + "n");
// Getting the P2SH address
List<ECKey> eckeyAList = new ArrayList<>();
eckeyAList.add(key);
Script redeemScript = ScriptBuilder.createRedeemScript(1, eckeyAList);
Script script = ScriptBuilder.createP2SHOutputScript(redeemScript);
byte[] scriptHash = ScriptPattern.extractHashFromP2SH(script);
LegacyAddress legacyAddress = LegacyAddress.fromScriptHash(params, scriptHash);
System.out.println("P2S address from the WIF pivate key is: " + legacyAddress.toString()); //3Az5wdibtPRGac41aGtyqzT1ejtobvb6qW

其输出公钥为03b5319c83adf4a2e274c37401623c7bf0ba453cee3e119f3bc2c523d27059b64f。其输出P2SH地址为3Az5wdibtPRGac41aGtyqzT1ejtobb6qW，这与正确的P2SH地址38SGXvkMvq8Tsop8rFx2K4JnaFKYZkjd5z相去甚远。

如果你们中的任何人知道要纠正这个问题，我很乐意接受你们的意见。

Answer 1

作为兑换脚本，您必须使用P2WPKH(付费见证公钥哈希(然后救赎脚本的创建将看起来像：

Script recommentScript=ScriptBuilder.createP2WPKHOutputScript(键(；

Answer 2

花了很多时间之后，我找到了解决方案。

// Getting P2SH address
LegacyAddress p2shAddressObj = LegacyAddress.fromScriptHash(PARAMS,
Utils.sha256hash160(ScriptBuilder
.createP2WPKHOutputScript(key.getPubKeyHash())
.getProgram())); // P2WPKH-P2SH (3* segwit compatible)
String p2shAddress = p2shAddressObj.toString();

Answer 3

这是在kotlin中使用Mikhail建议的正确代码：

val params: NetworkParameters = MainNetParams.get()
val key: ECKey = ECKey.fromPrivate(BigInteger("2"))
val redeemScript: Script = ScriptBuilder.createP2WPKHOutputScript(key)
val script = ScriptBuilder.createP2SHOutputScript(redeemScript)
val scriptHash = ScriptPattern.extractHashFromP2SH(script)
val legacyAddress = LegacyAddress.fromScriptHash(params, scriptHash)
println("P2S address from the WIF private key is: $legacyAddress")