pynigma

🗝 Enigma emulator written in Python

Project maintained by Starbix Hosted on GitHub Pages — Theme by mattgraham

This python program should emulate an Enigma M3, which was used by the Navy, Airforce and Army. The M3 three uses 3 wheels while the M4 uses 4 wheels. The two machines are only compatible with each other with certain settings.

Support for other rotors, UKWs (Umkehrwalzen) and ETWs (Eintrittswalzen) can easily be added.

Here’s how it works:

 1. Convert input letter to number - validate!
 2. Rotate wheels
 3. Pass through plugboard (currently NOT supported)
 4. Pass through right-hand wheel
 5. Pass through middle wheel
 6. Pass through left-hand wheel
 7. Pass through reflector
 8. Pass through left-hand wheel
 9. Pass through middle wheel
10. Pass through right-hand wheel
11. Pass through plugboard (currently NOT supported)
12. Convert to output letter

Numbers

Numbers: number

To include numbers in your message, you first need to indicate that you are about to use a number by entering the letter “Y” before each number. So, to encode the number 5 in your message you would type in “YT”, the number 6 would be “YZ”, and 42 would be “YRW”.

Documentation

Resources