#!/bin/env python3 import sys password = sys.argv[1] if len(password) < 3: print('Minimal password size: 3, get {}'.format(len(password))) sys.exit(1) xor=0 target=0x43 for letter in password: xor=xor^ord(letter) last_letter=xor^target print("here is your password: {}{}".format(password,chr(last_letter)))