Enigma in a sentence
In fact you can check that in this position the Enigma enciphers letters as follows: So finally we find that with the basic Enigma with this order and position of its rotors,Įxercise: Check that an input P results in lamp G lighting up, showing the reciprocal property.
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The current now goes back through the three rotors.īecause the current is now going in the other direction we need to write out the inverses of the substitutions given above. (Note that the reflector only has 13 connections, i.e. Now the current reaches the reflector, which we will suppose is the standard B reflector, effecting: Taking the information from this page specifying the actual rotor wirings, this means that theĪnd that the centre rotor M is II and effects:Īnd that the left hand rotor L is I and effects: (See however the technical note at the end of this page for a more exact statement).
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We will assume also that each rotor is in its A position when the encipherment is performed. We will suppose that the basic Enigma has been loaded with the rotors I, II, III. In this example we are only concerned with the encipherment of a single letter. The Enigma machine gives a mechanised way of performing one alphabetic substitution cipher after another. This is a supplementary page illustrating Tony Sale's sequence of pages on the Enigma.Ī detailed working through of Enigma encipherment
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The Enigma - Example An example of the basic Enigma