bitwise XOR of hex numbers in python

Question

how can we XOR hex numbers in python eg. I want to xor \'ABCD\' to \'12EF\'. answer should be B922.

i used below code but it is returning garbage value

Answer 1

here's a better function

def strxor(a, b):     # xor two strings of different lengths
    if len(a) > len(b):
        return "".join([chr(ord(x) ^ ord(y)) for (x, y) in zip(a[:len(b)], b)])
    else:
        return "".join([chr(ord(x) ^ ord(y)) for (x, y) in zip(a, b[:len(a)])])