Function PSBTInputSignedAndVerified

src/psbt.cpp:557–589

}

bool PSBTInputSignedAndVerified(const PartiallySignedTransaction& psbt, unsigned int input_index, const PrecomputedTransactionData* txdata)
{
    CTxOut utxo;
    assert(input_index < psbt.inputs.size());
    const PSBTInput& input = psbt.inputs[input_index];

    if (input.non_witness_utxo) {
        // If we're taking our information from a non-witness UTXO, verify that it matches the prevout.
        COutPoint prevout = input.GetOutPoint();
        if (prevout.n >= input.non_witness_utxo->vout.size()) {
            return false;
        }
        if (input.non_witness_utxo->GetHash() != prevout.hash) {
            return false;
        }
        utxo = input.non_witness_utxo->vout[prevout.n];
    } else if (!input.witness_utxo.IsNull()) {
        utxo = input.witness_utxo;
    } else {
        return false;
    }

    std::optional<CMutableTransaction> unsigned_tx = psbt.GetUnsignedTx();
    if (!unsigned_tx) {
        return false;
    }
    const CMutableTransaction& tx = *unsigned_tx;
    if (txdata) {
        return VerifyScript(input.final_script_sig, utxo.scriptPubKey, &input.final_script_witness, STANDARD_SCRIPT_VERIFY_FLAGS, MutableTransactionSignatureChecker{&tx, input_index, utxo.nValue, *txdata, MissingDataBehavior::FAIL});
    } else {
        return VerifyScript(input.final_script_sig, utxo.scriptPubKey, &input.final_script_witness, STANDARD_SCRIPT_VERIFY_FLAGS, MutableTransactionSignatureChecker{&tx, input_index, utxo.nValue, MissingDataBehavior::FAIL});
    }
}

size_t CountPSBTUnsignedInputs(const PartiallySignedTransaction& psbt) {
    size_t count = 0;