```#!/usr/bin/env python3import binasciikey = "JDClkFeX"def mystery(s):    r = ""    for i, c in enumerate(s):        #print ((i,c))        r += chr(ord(c) ^ ((i * ord(key[i % len(key)])) % 256))        #print (binascii.hexlify(bytes(r, "utf-8")).decode("utf-8"))        #print (len((binascii.hexlify(bytes(r, "utf-8")).decode("utf-8"))))    return binascii.hexlify(bytes(r, "utf-8"))
#print (mystery("easyctf{"))
cipherhex="6525c3b53dc38f2a3813330cc3bfc3965bc3acc3bf77c383c3acc3977603c3b8c3aac390c294c3a0c2a819"key = "JDClkFeX"
def resolve(cipherhex,key):    flag=""    rang=1    i=0    while rang