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A historical look at decrypting the Enigma
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[QUOTE="Baluncore, post: 6817911, member: 447632"] Each rotor contained 26 wires that connected the 26 contacts on the left face, to 26 different contacts on the right face. That was in effect a (cyclically changing) letter substitution. With three rotors, and a reflector, there were a total of 7 substitutions. The plugboard was another sparse substitution, since only a few steckers were used to exchange the letters. I don't think the concept of a long "One Time Pad" is a good model of Enigma. The messages were very much shorter than the rotor sequence length. Enigma was broken by the successive preclusion of possible known rotors, based on each assumed crib. An OTP should be truly random, and so could not possibly be factored into the different rotor combination and order employed that day. [/QUOTE]
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A historical look at decrypting the Enigma
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