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add support for external psbt signers

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This commit is contained in:
Craig Raw 2023-01-27 10:38:48 +02:00
parent a14b23f2fa
commit e2a4c32db3
2 changed files with 27 additions and 2 deletions
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18
src/main/java/com/sparrowwallet/drongo/psbt/PSBTInput.java
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@ -519,6 +519,20 @@ public class PSBTInput {
}
public boolean sign(ECKey privKey) {
return sign(new PSBTInputSigner() {
@Override
public TransactionSignature sign(Sha256Hash hash, SigHash sigHash, TransactionSignature.Type signatureType) {
return privKey.sign(hash, sigHash, signatureType);
}
@Override
public ECKey getPubKey() {
return ECKey.fromPublicOnly(privKey);
}
});
}
public boolean sign(PSBTInputSigner psbtInputSigner) {
SigHash localSigHash = getSigHash();
if(localSigHash == null) {
localSigHash = getDefaultSigHash();
@ -529,12 +543,12 @@ public class PSBTInput {
if(signingScript != null) {
Sha256Hash hash = getHashForSignature(signingScript, localSigHash);
TransactionSignature.Type type = isTaproot() ? SCHNORR : ECDSA;
TransactionSignature transactionSignature = privKey.sign(hash, localSigHash, type);
TransactionSignature transactionSignature = psbtInputSigner.sign(hash, localSigHash, type);
if(type == SCHNORR) {
tapKeyPathSignature = transactionSignature;
} else {
ECKey pubKey = ECKey.fromPublicOnly(privKey);
ECKey pubKey = psbtInputSigner.getPubKey();
getPartialSignatures().put(pubKey, transactionSignature);
}

11
src/main/java/com/sparrowwallet/drongo/psbt/PSBTInputSigner.java Normal file
View file

@ -0,0 +1,11 @@
package com.sparrowwallet.drongo.psbt;
import com.sparrowwallet.drongo.crypto.ECKey;
import com.sparrowwallet.drongo.protocol.Sha256Hash;
import com.sparrowwallet.drongo.protocol.SigHash;
import com.sparrowwallet.drongo.protocol.TransactionSignature;
public interface PSBTInputSigner {
TransactionSignature sign(Sha256Hash hash, SigHash sigHash, TransactionSignature.Type signatureType);
ECKey getPubKey();
}