XOR加解密-python

# -*-coding:utf-8-*-
from secrets import token_bytes
from typing import Tuple

def random_key(length:int)->int:
    tb:bytes = token_bytes(length)
    return int.from_bytes(tb,'big')

def encrypt(original:str)->Tuple[int,int]:
    original_bytes:bytes = original.encode()
    dummy:int = random_key(len(original_bytes))
    original_bytes:int = int.from_bytes(original_bytes,'big')
    encrypted:int = original_bytes ^ dummy

    return  dummy,encrypted

def decrypt(key1:int,key2:int)->str:
    decrypted:int = key1 ^ key2
    temp:bytes = decrypted.to_bytes((decrypted.bit_length() + 7)//8,'big')
    return temp.decode()


if __name__ == '__main__':
    key1,key2 = encrypt('Test string')
    print(key1)
    print(key2)
    result:str = decrypt(key1,key2)
    print(result)