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#Enigma simulator c code
#Enigma simulator c windows

For example, the rotor "I" of Enigma I is wired as shown below, and the letter "A" is converted to "E". The entry wheels, rotors, and reflectors are wired internally to convert the 26 letters from "A" to "Z" into other letters, and the conversion is done when the wires are energized. Lettering is performed at all locations, including the rotor. The encrypted result is displayed on the lamp board (Lampenfeld). Characters entered from the keyboard (Tastatur) pass through a plugboard (Steckerbrett), an entry wheel (ETW, Eintrittswalze), three or four rotors (Walze), a reflector (UKW, Umkehrwalze), and then the reverse. The Enigma machine consists of the following components.

Spanish Enigma, Sonderschaltung / Delta (A 16101).

It supports encryption of 26 characters from "A" to "Z".Ĭharacter substitution is done using the Enigma cipher machine, and DenCode supports the following Enigma machine simulations > putStr $ unlines $ stageMappingList (configEnigma "b-γ-V-VIII-II" "LFAQ" "UX.MO.KZ.AY.EF.PL" "03.17.04.The Enigma cipher is a type of commutative cipher that encrypts letters by replacing them with other letters. These are arranged in processing order, beginning with the encoding performed by the plugboard,įollowed by the forward encoding performed by each rotor (see componentMapping), then the reflector,įollowed by the reverse encodings by each rotor, and finally by the plugboard again. The list of Mappings for each stage of an EnigmaConfig: the encoding performed by theĬomponent at that point in the progress through the machine. > take 5 $ map positions $ iterate step cfg

#Enigma simulator c windows

> take 5 $ map windows $ iterate step cfg Which is manifest in changes of the letters at the windows: > let cfg = configEnigma "c-γ-V-I-II" "LXZO" "UX.MO.KZ.AY.EF.PL" "03.17.04.01" Stepping leaves the components, stages and rings of a configuration unchanged, changing only positions, In the physical machine, a step occurs in response to each operator keypress, Step the machine to a new EnigmaConfig by rotating the rightmost (first) rotor one position, and other rotorsĪs determined by the positions of rotors in the machine. Invalid arguments return an EnigmaError: > configEnigma' "c-β-V-III-II" "LQVI" "AM.EU.ZiL" "16.01.21.11" Validation is permissive, allowing for ahistorical collections and numbers of rotors (including reflectorsĪt the rotor stage, and trivial degenerate machines Į.g., configEnigma "-" "A" "" "01"), and any number of (non-contradictory) plugboard wirings (including none). Them, which is the reverse of the order in which they are encountered in processing (see stages). "22.11.16") see rings.įollowing convention, the elements of these strings are in physical machine order as the operator sees

The position of the letter ring on each rotor, separated by periods (e.g.

The plugboard specification (which may be omitted with "~") see Name.

The letters visible at the windows (e.g.

The rotor Names, separated by dashes (e.g.

#Enigma simulator c code

enigmaEncoding :: EnigmaConfig -> Message -> StringĬreate an EnigmaConfig from a conventional specification.Ī (safe public, "smart", total) constructor intendedįor use in pure code that does validation and takes a conventional specification as input, in the form of four strings:.enigmaMapping :: EnigmaConfig -> Mapping.componentMapping :: Direction -> Component -> Position -> Mapping.configEnigma :: String -> String -> String -> String -> EnigmaConfig.configEnigma' :: String -> String -> String -> String -> Either EnigmaError EnigmaConfig.