serialized_nbytes RelinearizationKey.serialized_nbytes Shows the size of a relinearization key when serialized. Output serialized_nbytes, int from desilofhe import Engine engine = Engine() secret_key = engine.create_secret_key() relinearization_key = engine.create_relinearization_key(secret_key) serialized_nbytes = relinearization_key.serialized_nbytes