def single_sign_transaction(input_private_key: str, tx: Transaction):
data = tx.serialize_unsigned()
signature = keytool.ecdsa_sign(bytes.fromhex(input_private_key), data)
r = b""
r = serialize.write_var_bytes(r, signature)
tx.programs[0].parameter = r
tx.hash()
return tx
def single_sign_transaction(keystore: KeyStore, tx: Transaction):
data = tx.serialize_unsigned()
signature = keytool.ecdsa_sign(keystore.private_key, data)
r = b""
r = serialize.write_var_bytes(r, signature)
tx.programs[0].parameter = r
tx.hash()
return tx
