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Enigma Machine

Tool to decrypt/encrypt with Enigma automatically. Enigma is a german ciphering/deciphering machine. Based on an electromechanic system using rotors, it allowed to cipher german communications during World War II.

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Enigma Machine -

Tag(s) : Cryptography, Substitution Cipher

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Enigma Machine

Enigma Encoder and Decoder

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Answers to Questions (FAQ)

How to encrypt using Enigma cipher?

dCode can code/decoder 3 enigma machines (Wehrmacht/Luftwaffe with 3 rotors and Kriegsmarine with 3 or 4 rotors). Each model has its own rotos and reflectors.

MachineRotorsRéflecteurs
Wehrmacht / Luftwaffe 3I, II, III, IV and VB or C
Kriegsmarine M3I, II, III, IV, V, (sometimes VI, VII and VIII)B or C
Kriegsmarine M4I, II, III, IV, V, VI, VII, VIII, Beta and GammaBThin or CThin

Rotors have notches. For rotor I, going from Q to R advances the next rotor, notches depends on each rotors and cannot be configured.

Rotors can be mounted in any order but Beta and Gamma can only be in position 4 and must use B Thin or C Thin reflector.

A rotor can have variable initial position (there are 26 positions) which have to be set each time. Rotors have a letter wheel which was fixed in first Enigma machines, but can be set in the latest versions, its position is called Ringstellung.

How to recognize Enigma ciphertext?

The ciphered message has only letters, and no letter in the same position as the initial message.

What is the difference between the initial position of the rotors and the position of the alphabet wheel?

On some rotor wheel, the alphabet is fixed, in this case rotor and wheel are the same thing, but sometimes the wheel is not fixed and can be shifted by an offset from the rotor.

When Enigma have been invented?

In the early 1920s

Source code

dCode retains ownership of the "Enigma Machine" source code. Except explicit open source licence (indicated Creative Commons / free), the "Enigma Machine" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Enigma Machine" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Enigma Machine" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!
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Cite as source (bibliography):
Enigma Machine on dCode.fr [online website], retrieved on 2022-12-09, https://www.dcode.fr/enigma-machine-cipher

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NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

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