An Enigma M3 emulator written in Python 3
This python program emulates 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:
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".
GPLv3 © 2018 Cédric Laubacher