题目：
https://cryptopals.com/sets/1/challenges/5
解法：
x = "Burning ‘em, if you ain‘t quick and nimble" key = "ICE" y = bytearray([ord(x[i]) ^ ord(key[i % len(key)]) for i in range(len(x))]).hex() print(y)
原文：https://www.cnblogs.com/xuesu/p/12000332.html