mirror of https://github.com/dirtbags/moth.git
17 lines
695 B
Python
17 lines
695 B
Python
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import cbc, crypto
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alice = b"""Do you think they've figured out that this was encrypted using cipher block chaining with a cipher of C(key, text) = text? If they somehow stumbled across the solution with knowing what it was, the next three will be hard. """
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bob = b"""Well, either way, we might as well let them know that the next three puzzles all uses CBC, but with progressively more difficult cipher functions. the squirrels crow at noon """
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def C(text, key):
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return text
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IV = b'ahiru'
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key = None
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encode = lambda t : cbc.cipherBlockChainingE(key, IV, C, t)
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decode = lambda t : cbc.cipherBlockChainingD(key, IV, C, t)
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crypto.mkIndex(encode, decode, alice, bob, crypto.hexFormat)
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