Script to xor hex strings

hexxor.py

#!/usr/bin/env python
import sys

a = sys.argv[1].decode("hex")
b = sys.argv[2].decode("hex")

def tohex(v):
  return chr(v).encode("hex")

out = [tohex(ord(x) ^ ord(y)) for (x, y) in zip(a, b)]
print " ".join(out)