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wallet: also search taproot pubkeys in FillPSBT

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When filling a PSBT, we search the listed pubkeys in order to determine
whether the current DescriptorScriptPubKeyMan could sign the transaction
even if it is not watching the scripts. With Taproot, the taproot
pubkeys need to be searched as well.
This commit is contained in:
Andrew Chow 2022-05-02 11:30:03 -04:00
parent 6cff82722f
commit a73b56888a
1 changed files with 13 additions and 0 deletions
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13
src/wallet/scriptpubkeyman.cpp
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@ -2180,6 +2180,19 @@ TransactionError DescriptorScriptPubKeyMan::FillPSBT(PartiallySignedTransaction&
*keys = Merge(*keys, *pk_keys);
}
}
for (const auto& pk_pair : input.m_tap_bip32_paths) {
const XOnlyPubKey& pubkey = pk_pair.first;
for (unsigned char prefix : {0x02, 0x03}) {
unsigned char b[33] = {prefix};
std::copy(pubkey.begin(), pubkey.end(), b + 1);
CPubKey fullpubkey;
fullpubkey.Set(b, b + 33);
std::unique_ptr<FlatSigningProvider> pk_keys = GetSigningProvider(fullpubkey);
if (pk_keys) {
*keys = Merge(*keys, *pk_keys);
}
}
}
}
SignPSBTInput(HidingSigningProvider(keys.get(), !sign, !bip32derivs), psbtx, i, &txdata, sighash_type, nullptr, finalize);