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update to refactor signature verification

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This commit is contained in:
Craig Raw 2020-03-30 11:41:02 +02:00
parent fd94e885b8
commit a1696ec2e8
4 changed files with 20 additions and 20 deletions
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6
src/main/java/com/craigraw/drongo/protocol/Script.java
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@ -110,7 +110,7 @@ public class Script {
* Returns true if this script has the required form to contain a destination address * Returns true if this script has the required form to contain a destination address
*/ */
public boolean containsToAddress() { public boolean containsToAddress() {
return ScriptPattern.isP2PK(this) || ScriptPattern.isP2PKH(this) || ScriptPattern.isP2SH(this) || ScriptPattern.isP2WPKH(this) || ScriptPattern.isP2WSH(this) || ScriptPattern.isSentToMultisig(this); return ScriptPattern.isP2PK(this) || ScriptPattern.isP2PKH(this) || ScriptPattern.isP2SH(this) || ScriptPattern.isP2WPKH(this) || ScriptPattern.isP2WSH(this) || ScriptPattern.isMultisig(this);
} }
/** /**
@ -143,7 +143,7 @@ public class Script {
return new Address[] { new P2WPKHAddress(ScriptPattern.extractHashFromP2WH(this)) }; return new Address[] { new P2WPKHAddress(ScriptPattern.extractHashFromP2WH(this)) };
else if (ScriptPattern.isP2WSH(this)) else if (ScriptPattern.isP2WSH(this))
return new Address[] { new P2WSHAddress(ScriptPattern.extractHashFromP2WH(this)) }; return new Address[] { new P2WSHAddress(ScriptPattern.extractHashFromP2WH(this)) };
else if (ScriptPattern.isSentToMultisig(this)) else if (ScriptPattern.isMultisig(this))
return ScriptPattern.extractMultisigAddresses(this); return ScriptPattern.extractMultisigAddresses(this);
else else
throw new NonStandardScriptException("Cannot find addresses in non standard script: " + toString()); throw new NonStandardScriptException("Cannot find addresses in non standard script: " + toString());
@ -154,7 +154,7 @@ public class Script {
return 1; return 1;
} }
if(ScriptPattern.isSentToMultisig(this)) { if(ScriptPattern.isMultisig(this)) {
return ScriptPattern.extractMultisigThreshold(this); return ScriptPattern.extractMultisigThreshold(this);
} }

2
src/main/java/com/craigraw/drongo/protocol/ScriptPattern.java
View file

@ -110,7 +110,7 @@ public class ScriptPattern {
* Returns whether this script matches the format used for multisig outputs: * Returns whether this script matches the format used for multisig outputs:
* {@code [n] [keys...] [m] CHECKMULTISIG} * {@code [n] [keys...] [m] CHECKMULTISIG}
*/ */
public static boolean isSentToMultisig(Script script) { public static boolean isMultisig(Script script) {
List<ScriptChunk> chunks = script.chunks; List<ScriptChunk> chunks = script.chunks;
if (chunks.size() < 4) return false; if (chunks.size() < 4) return false;
ScriptChunk chunk = chunks.get(chunks.size() - 1); ScriptChunk chunk = chunks.get(chunks.size() - 1);

4
src/main/java/com/craigraw/drongo/psbt/PSBT.java
View file

@ -251,8 +251,8 @@ public class PSBT {
PSBTInput input = new PSBTInput(inputEntries, transaction, inputIndex); PSBTInput input = new PSBTInput(inputEntries, transaction, inputIndex);
boolean verified = input.verifySignatures(); boolean verified = input.verifySignatures();
if(verified) { if(!verified && input.getPartialSignatures().size() > 0) {
log.debug("Verified signatures on input #" + inputIndex); throw new IllegalStateException("Unverifiable partial signatures provided");
} }
this.psbtInputs.add(input); this.psbtInputs.add(input);

28
src/main/java/com/craigraw/drongo/psbt/PSBTInput.java
View file

@ -240,7 +240,7 @@ public class PSBTInput {
public boolean isSigned() throws NonStandardScriptException { public boolean isSigned() throws NonStandardScriptException {
//All partial sigs are already verified //All partial sigs are already verified
int reqSigs = getConnectedScript().getNumRequiredSignatures(); int reqSigs = getSigningScript().getNumRequiredSignatures();
int sigs = getPartialSignatures().size(); int sigs = getPartialSignatures().size();
return sigs == reqSigs; return sigs == reqSigs;
} }
@ -253,9 +253,9 @@ public class PSBTInput {
} }
if(getNonWitnessUtxo() != null || getWitnessUtxo() != null) { if(getNonWitnessUtxo() != null || getWitnessUtxo() != null) {
Script connectedScript = getConnectedScript(); Script signingScript = getSigningScript();
if(connectedScript != null) { if(signingScript != null) {
Sha256Hash hash = getHashForSignature(connectedScript, localSigHash); Sha256Hash hash = getHashForSignature(signingScript, localSigHash);
for(ECKey sigPublicKey : getPartialSignatures().keySet()) { for(ECKey sigPublicKey : getPartialSignatures().keySet()) {
TransactionSignature signature = getPartialSignature(sigPublicKey); TransactionSignature signature = getPartialSignature(sigPublicKey);
@ -271,30 +271,30 @@ public class PSBTInput {
return false; return false;
} }
public Script getConnectedScript() { public Script getSigningScript() {
int vout = (int)transaction.getInputs().get(index).getOutpoint().getIndex(); int vout = (int)transaction.getInputs().get(index).getOutpoint().getIndex();
Script connectedScript = getNonWitnessUtxo() != null ? getNonWitnessUtxo().getOutputs().get(vout).getScript() : getWitnessUtxo().getScript(); Script signingScript = getNonWitnessUtxo() != null ? getNonWitnessUtxo().getOutputs().get(vout).getScript() : getWitnessUtxo().getScript();
if(ScriptPattern.isP2SH(connectedScript)) { if(ScriptPattern.isP2SH(signingScript)) {
if(getRedeemScript() == null) { if(getRedeemScript() == null) {
return null; return null;
} else { } else {
connectedScript = getRedeemScript(); signingScript = getRedeemScript();
} }
} }
if(ScriptPattern.isP2WPKH(connectedScript)) { if(ScriptPattern.isP2WPKH(signingScript)) {
Address address = new P2PKHAddress(connectedScript.getPubKeyHash()); Address address = new P2PKHAddress(signingScript.getPubKeyHash());
connectedScript = address.getOutputScript(); signingScript = address.getOutputScript();
} else if(ScriptPattern.isP2WSH(connectedScript)) { } else if(ScriptPattern.isP2WSH(signingScript)) {
if(getWitnessScript() == null) { if(getWitnessScript() == null) {
return null; return null;
} else { } else {
connectedScript = getWitnessScript(); signingScript = getWitnessScript();
} }
} }
return connectedScript; return signingScript;
} }
private Sha256Hash getHashForSignature(Script connectedScript, Transaction.SigHash localSigHash) { private Sha256Hash getHashForSignature(Script connectedScript, Transaction.SigHash localSigHash) {