Python异或加密字符串

import os
import sys
import struct

def enc(path, key):
    path_ret = ""
    for i in range(0, len(path)/4):
        path_ret += struct.pack("<L", struct.unpack("<L", path[i*4 : (i*4)+4])[0] ^ key)

    return path_ret

print enc("daniel King ", 0x0)
print enc("daniel King ", 0xFFFFFFFF)
print enc(enc("daniel King ", 0xFFFFFFFF), 0xFFFFFFFF)

>>> ================================ RESTART ================================
>>> 
daniel King 
洖憱殦叽枒樳
daniel King 
>>>