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ScriptBuilder: Add createP2PKHOutputScript() helpers.

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This commit is contained in:
Andreas Schildbach
2019-01-30 01:48:32 +01:00
parent 47659e73d7
commit 0db2a5f183
4 changed files with 26 additions and 13 deletions
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29
core/src/main/java/org/bitcoinj/script/ScriptBuilder.java
View File

@@ -258,12 +258,7 @@ public class ScriptBuilder {
if (to instanceof LegacyAddress) {
ScriptType scriptType = to.getOutputScriptType();
if (scriptType == ScriptType.P2PKH) {
// OP_DUP OP_HASH160 <pubKeyHash> OP_EQUALVERIFY OP_CHECKSIG
builder.op(OP_DUP);
builder.op(OP_HASH160);
builder.data(to.getHash());
builder.op(OP_EQUALVERIFY);
builder.op(OP_CHECKSIG);
return createP2PKHOutputScript(to.getHash());
} else if (scriptType == ScriptType.P2SH) {
// OP_HASH160 <scriptHash> OP_EQUAL
builder.op(OP_HASH160);
@@ -438,6 +433,28 @@ public class ScriptBuilder {
return builder.build();
}
/**
* Creates a scriptPubKey that sends to the given public key hash.
*/
public static Script createP2PKHOutputScript(byte[] hash) {
checkArgument(hash.length == LegacyAddress.LENGTH);
ScriptBuilder builder = new ScriptBuilder();
builder.op(OP_DUP);
builder.op(OP_HASH160);
builder.data(hash);
builder.op(OP_EQUALVERIFY);
builder.op(OP_CHECKSIG);
return builder.build();
}
/**
* Creates a scriptPubKey that sends to the given public key.
*/
public static Script createP2PKHOutputScript(ECKey key) {
checkArgument(key.isCompressed());
return createP2PKHOutputScript(key.getPubKeyHash());
}
/**
* Creates a segwit scriptPubKey that sends to the given public key hash.
*/

5
core/src/test/java/org/bitcoinj/core/TransactionTest.java
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@@ -337,10 +337,7 @@ public class TransactionTest {
assertEquals("30450221008b9d1dc26ba6a9cb62127b02742fa9d754cd3bebf337f7a55d114c8e5cdd30be022040529b194ba3f9281a99f2b1c0a19c0489bc22ede944ccf4ecbab4cc618ef3ed01",
HEX.encode(txSig0.encodeToBitcoin()));
Script scriptCode = new ScriptBuilder()
.data(ScriptBuilder.createOutputScript(LegacyAddress.fromKey(netParams, key1))
.getProgram())
.build();
Script scriptCode = new ScriptBuilder().data(ScriptBuilder.createP2PKHOutputScript(key1).getProgram()).build();
assertEquals("1976a9141d0f172a0ecb48aee1be1f2687d2963ae33f71a188ac",
HEX.encode(scriptCode.getProgram()));

3
core/src/test/java/org/bitcoinj/script/ScriptPatternTest.java
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@@ -19,7 +19,6 @@ package org.bitcoinj.script;
import com.google.common.collect.Lists;
import org.bitcoinj.core.LegacyAddress;
import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.core.SegwitAddress;
import org.bitcoinj.core.Sha256Hash;
@@ -39,7 +38,7 @@ public class ScriptPatternTest {
@Test
public void testCommonScripts() {
assertTrue(ScriptPattern.isPayToPubKeyHash(
ScriptBuilder.createOutputScript(LegacyAddress.fromKey(MAINNET, keys.get(0)))
ScriptBuilder.createP2PKHOutputScript(keys.get(0))
));
assertTrue(ScriptPattern.isPayToScriptHash(
ScriptBuilder.createP2SHOutputScript(2, keys)

2
core/src/test/java/org/bitcoinj/wallet/DefaultRiskAnalysisTest.java
View File

@@ -208,7 +208,7 @@ public class DefaultRiskAnalysisTest {
Transaction tx = new Transaction(MAINNET);
tx.addInput(MAINNET.getGenesisBlock().getTransactions().get(0).getOutput(0));
// A pay to address output
tx.addOutput(Coin.CENT, ScriptBuilder.createOutputScript(LegacyAddress.fromKey(MAINNET, key1)));
tx.addOutput(Coin.CENT, ScriptBuilder.createP2PKHOutputScript(key1));
// A pay to pubkey output
tx.addOutput(Coin.CENT, ScriptBuilder.createOutputScript(key1));
tx.addOutput(Coin.CENT, ScriptBuilder.createOutputScript(key1));