csaw密码

题目：AAoHAR1TIiIkUFUjUFQgVyInVSVQJVFRUSNRX1YgXiJSVyJQVRs=

写python脚本：

import base64

ciphertext="AAoHAR1TIiIkUFUjUFQgVyInVSVQJVFRUSNRX1YgXiJSVyJQVRs="

cipher=base64.b64decode(ciphertext)

for i in range(0,256):

    result=""

    for s in cipher:

        result+=chr(ord(s)^i)

    if "flag" in result:

        print result

flag{5DDB63E62F1DA3C6C777E790F8D41D63}