# -*- coding: UTF-8 -*-
import sys
import base64
from myXtea import myEncode

if __name__ == "__main__":
    
    key = list(base64.b64decode(sys.argv[1]))
    key[0], key[1], key[2], key[3] = ord(key[3]), ord(key[2]), ord(key[1]), ord(key[0])
#    key[0], key[1], key[2], key[3] = ord(key[0]), ord(key[1]), ord(key[2]), ord(key[3])

    data = base64.b64decode(sys.argv[2])

    print( myEncode(key,data) )