Method sign_tx

test/functional/feature_block.py:1380–1386

(self, tx, spend_tx)

    # sign a transaction, using the key we know about
    # this signs input 0 in tx, which is assumed to be spending output 0 in spend_tx
    def sign_tx(self, tx, spend_tx):
        scriptPubKey = bytearray(spend_tx.vout[0].scriptPubKey)
        if (scriptPubKey[0] == OP_TRUE):  # an anyone-can-spend
            tx.vin[0].scriptSig = CScript()
            return
        (sighash, err) = LegacySignatureHash(spend_tx.vout[0].scriptPubKey, tx, 0, SIGHASH_ALL)
        tx.vin[0].scriptSig = CScript([self.coinbase_key.sign_ecdsa(sighash) + bytes(bytearray([SIGHASH_ALL]))])

    def create_and_sign_transaction(self, spend_tx, value, script=CScript([OP_TRUE])):
        tx = self.create_tx(spend_tx, 0, value, script)