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CryptoUtils: add digestRipeMd160() method, use it to wrap BouncyCastle

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This commit is contained in:
Sean Gilligan 2023-03-07 16:08:16 -08:00 • committed by Andreas Schildbach
parent fff3b7e837
commit 7a1c71c319
2 changed files with 18 additions and 11 deletions
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21
core/src/main/java/org/bitcoinj/crypto/internal/CryptoUtils.java
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@ -27,15 +27,26 @@ import java.util.Arrays;
*/
public class CryptoUtils {
/**
* Calculates RIPEMD160(SHA256(input)). This is used in Address calculations.
* Calculate RIPEMD160(SHA256(input)). This is used in Address calculations.
* @param input bytes to hash
* @return RIPEMD160(SHA256(input))
*/
public static byte[] sha256hash160(byte[] input) {
byte[] sha256 = Sha256Hash.hash(input);
return digestRipeMd160(sha256);
}
/**
* Calculate RIPEMD160(input).
* @param input bytes to hash
* @return RIPEMD160(input)
*/
public static byte[] digestRipeMd160(byte[] input) {
RIPEMD160Digest digest = new RIPEMD160Digest();
digest.update(sha256, 0, sha256.length);
byte[] out = new byte[20];
digest.doFinal(out, 0);
return out;
digest.update(input, 0, input.length);
byte[] ripmemdHash = new byte[20];
digest.doFinal(ripmemdHash, 0);
return ripmemdHash;
}
/**

8
core/src/main/java/org/bitcoinj/script/Script.java
View file

@ -43,7 +43,6 @@ import org.bitcoinj.core.VerificationException;
import org.bitcoinj.base.internal.InternalUtils;
import org.bitcoinj.crypto.TransactionSignature;
import org.bitcoinj.crypto.internal.CryptoUtils;
import org.bouncycastle.crypto.digests.RIPEMD160Digest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -1261,12 +1260,9 @@ public class Script {
case OP_RIPEMD160:
if (stack.size() < 1)
throw new ScriptException(ScriptError.SCRIPT_ERR_INVALID_STACK_OPERATION, "Attempted OP_RIPEMD160 on an empty stack");
RIPEMD160Digest digest = new RIPEMD160Digest();
byte[] dataToHash = stack.pollLast();
digest.update(dataToHash, 0, dataToHash.length);
byte[] ripmemdHash = new byte[20];
digest.doFinal(ripmemdHash, 0);
stack.add(ripmemdHash);
byte[] ripmeMdHash = CryptoUtils.digestRipeMd160(dataToHash);
stack.add(ripmeMdHash);
break;
case OP_SHA1:
if (stack.size() < 1)