from typing import Any, Union, Iterable, ByteString class ARC4Cipher: block_size: int key_size: int def __init__(self, key: ByteString, *args: Any, **kwargs: Any) -> None: ... def encrypt(self, plaintext: ByteString) -> bytes: ... def decrypt(self, ciphertext: ByteString) -> bytes: ... def new(key: ByteString, drop : int = ...) -> ARC4Cipher: ... block_size: int key_size: Iterable[int]