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check all outputs for payment codes

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This commit is contained in:
julian 2023-01-31 14:09:45 -06:00
parent 6df782647e
commit 95d1f3c17e
1 changed files with 21 additions and 3 deletions

24
lib/services/mixins/paynym_wallet_interface.dart
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@ -696,8 +696,26 @@ mixin PaynymWalletInterface {
}
try {
final blindedCode =
transaction.outputs.elementAt(1).scriptPubKeyAsm!.split(" ")[1];
Uint8List? blindedCodeBytes;
for (int i = 0; i < transaction.outputs.length; i++) {
List<String>? scriptChunks =
transaction.outputs.elementAt(1).scriptPubKeyAsm?.split(" ");
if (scriptChunks?.length == 2 && scriptChunks?[0] == "OP_RETURN") {
final blindedPaymentCode = scriptChunks![1];
final bytes = blindedPaymentCode.fromHex;
// https://en.bitcoin.it/wiki/BIP_0047#Sending
if (bytes.length == 80 && bytes.first == 1) {
blindedCodeBytes = bytes;
}
}
}
// transaction does not contain a payment code
if (blindedCodeBytes == null) {
return null;
}
final designatedInput = transaction.inputs.first;
@ -718,7 +736,7 @@ mixin PaynymWalletInterface {
final mask = PaymentCode.getMask(S.ecdhSecret(), rev);
final unBlindedPayload = PaymentCode.blind(blindedCode.fromHex, mask);
final unBlindedPayload = PaymentCode.blind(blindedCodeBytes, mask);
final unBlindedPaymentCode =
PaymentCode.initFromPayload(unBlindedPayload);