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  2. Enigma machine - Wikipedia

    en.wikipedia.org/wiki/Enigma_machine

    The Enigma machine is a ... an Enigma scrambler implement a polyalphabetic substitution cipher that provides Enigma's security. The diagram on the right shows how the ...

  3. Enigma rotor details - Wikipedia

    en.wikipedia.org/wiki/Enigma_rotor_details

    On 1 February 1942, the Enigma messages began to be encoded using a new Enigma version that had been brought into use. The previous 3-rotor Enigma model had been modified with the old reflector replaced by a thin rotor and a new thin reflector. Breaking Shark on 3-rotor bombes would have taken 50 to 100 times as long as an average Air Force or ...

  4. Bombe - Wikipedia

    en.wikipedia.org/wiki/Bombe

    The selection of rotors in use in the Enigma's scrambler, and their positions on the spindle (Walzenlage or "wheel order"). Possible wheel orders numbered 60 (three rotors from a choice of five) for army and air force networks and 336 (three rotors from a choice of eight) for the naval networks.

  5. Zygalski sheets - Wikipedia

    en.wikipedia.org/wiki/Zygalski_sheets

    Zygalski's device comprised a set of 26 perforated sheets for each of the, initially, six possible sequences for inserting the three rotors into the Enigma machine's scrambler. [1] Each sheet related to the starting position of the left (slowest-moving) rotor.

  6. File:Enigma wiring kleur.svg - Wikipedia

    en.wikipedia.org/wiki/File:Enigma_wiring_kleur.svg

    To explain the Enigma, we use this wiring diagram. To simplify the example, only four components of each are shown. In reality, there are 26 lamps, keys, plugs and wirings inside the rotors.

  7. Cryptanalysis of the Enigma - Wikipedia

    en.wikipedia.org/wiki/Cryptanalysis_of_the_Enigma

    The Enigma machines combined multiple levels of movable rotors and plug cables to produce a particularly complex polyalphabetic substitution cipher.. During World War I, inventors in several countries realised that a purely random key sequence, containing no repetitive pattern, would, in principle, make a polyalphabetic substitution cipher unbreakable. [6]

  8. Bomba (cryptography) - Wikipedia

    en.wikipedia.org/wiki/Bomba_(cryptography)

    The German Enigma used a combination key to control the operation of the machine: rotor order, which rotors to install, which ring setting for each rotor, which initial setting for each rotor, and the settings of the stecker plugboard. The rotor settings were trigrams (for example, "NJR") to indicate the way the operator was to set the machine.

  9. Enigma-M4 - Wikipedia

    en.wikipedia.org/wiki/Enigma-M4

    The Enigma-M4 key machine Key manual of the Kriegsmarine "Der Schlüssel M".. The Enigma-M4 (also called Schlüssel M, more precisely Schlüssel M Form M4) is a rotor key machine that was used for encrypted communication by the German Kriegsmarine during World War II from October 1941.