59 lines
1.4 KiB
Python
59 lines
1.4 KiB
Python
#!/bin/python
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import sys, getopt, os
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def main(argv):
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try:
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opts, args = getopt.getopt(argv,"hc1:c2:c3:",["comp1=","comp2=","comp3="])
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except getopt.GetoptError:
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print ('test.py -i <inputfile> -a <address> -p <port>')
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sys.exit(2)
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for opt, arg in opts:
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if opt == '-h':
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print ('test.py -i <inputfile> -a <address> -p <port>')
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sys.exit()
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elif opt in ("-c1","--comp1"):
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comp1 = str(arg)
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elif opt in ("-c2","--comp2"):
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comp2 = str(arg)
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elif opt in ("-c3","--comp3"):
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comp3 = str(arg)
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if len(comp1) != len(comp2) or str(len(comp1)) != str(len(comp3)):
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print("All components should be of the same length")
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sys.exit(2)
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if len(comp1) not in (16, 32, 64, 128, 256):
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print("All components should be of byte length")
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sys.exit(2)
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>>> a = "a133efb38766"
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>>> b = "a0a1a2a3a5a7"
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>>> a.encode().hex()
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'613133336566623338373636'
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>>> bytes1 =
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>>> bytes2 = bytes.fromhex( b.encode("utf-8").hex())
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>>> xored = bytes( b1 ^ b2 for b1,b2 in zip(bytes1,bytes2))
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>>> xored.hex()
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'000152020454030059025701'
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>>> for c,d in zip(bytes1,bytes2):
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... e.append( ( c ^ d ) )
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...
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>>> e
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bytearray(b'\x00\x01R\x02\x04T\x03\x00Y\x02W\x01')
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>>> e.hex()
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'000152020454030059025701'
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if __name__ == "__main__":
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main(sys.argv[1:])
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