#!/usr/bin/env python

import os, sys

module_dir = os.path.relpath('../src/cryptopals')
sys.path.insert(0, module_dir)

import helper, cryptlib

def main():
    content = helper.read_file("../data/02.txt")
    hexstring_list = content.splitlines()
    solution = cryptlib.byte_xor(hexstring_list[0], hexstring_list[1])
    print(hex(solution)[2:])

if __name__ == '__main__':
    main()