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from sys import argv
"""
0 + 0 -> 1
1 + 1 -> 1
0 + 1 -> 0
1 + 0 -> 0
"""
# Read two files as byte arrays
file1_b = bytearray(open(argv[1], 'rb').read())
file2_b = bytearray(open(argv[2], 'rb').read())
# Set the length to be the smaller one
size = min(len(file1_b), len(file2_b))
xord_byte_array = bytearray(size)
# XOR between the files
for i in range(size):
xord_byte_array[i] = file1_b[i] ^ file2_b[i]
# Write the XORd bytes to the output file
open(argv[3], 'wb').write(xord_byte_array)
print(f'[*] {argv[1]} XOR {argv[2]}\n[*] Saved to \033[1;33m{argv[3]}\033[1;m.')
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