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fix for retreiving notification tx data for non-zero bip47 accounts

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Craig Raw 2022-02-23 09:44:09 +02:00
parent 7bb07ab39e
commit 956f59880e
1 changed files with 3 additions and 1 deletions
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4
src/main/java/com/sparrowwallet/drongo/bip47/PaymentCode.java
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@ -112,7 +112,9 @@ public class PaymentCode {
TransactionInput txInput = getDesignatedInput(transaction);
ECKey pubKey = getDesignatedPubKey(txInput);
ECKey notificationPrivKey = keystore.getBip47ExtendedPrivateKey().getKey(List.of(ChildNumber.ZERO_HARDENED, new ChildNumber(0)));
List<ChildNumber> derivation = keystore.getKeyDerivation().getDerivation();
ChildNumber derivationStart = derivation.isEmpty() ? ChildNumber.ZERO_HARDENED : derivation.get(derivation.size() - 1);
ECKey notificationPrivKey = keystore.getBip47ExtendedPrivateKey().getKey(List.of(derivationStart, new ChildNumber(0)));
SecretPoint secretPoint = new SecretPoint(notificationPrivKey.getPrivKeyBytes(), pubKey.getPubKey());
byte[] blindingMask = getMask(secretPoint.ECDHSecretAsBytes(), txInput.getOutpoint().bitcoinSerialize());
byte[] blindedPaymentCode = getOpReturnData(transaction);