The Bombe needs a crib. What if you don’t have one? Index of coincidence measures how much an output looks like real language vs random noise. We use it to attack Enigma without any known plaintext.
The Bombe needs a crib. What if you don’t have one? Index of coincidence measures how much an output looks like real language vs random noise. We use it to attack Enigma without any known plaintext.
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