tvl-depot/users/wpcarro/scratch/cryptopals/set1/c2.py

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def fixed_xor(x, y, decode_hex=True, encode_hex=True):
if decode_hex:
x = bytearray.fromhex(x)
y = bytearray.fromhex(y)
result = bytearray(len(x))
for i in range(len(x)):
result[i] = x[i] ^ y[i]
return result.hex() if encode_hex else result
run_tests = False
if run_tests:
actual = fixed_xor("1c0111001f010100061a024b53535009181c", "686974207468652062756c6c277320657965")
expect = "746865206b696420646f6e277420706c6179"
print(actual)
assert actual == expect
print("Success!")