A modern version of the World War II Enigma Machine in Racket, a variant of Scheme. The machine has encrypt, decrypt, and crack mode.
The Enigma machine was implemented as a GUI in Racket using racket-gui, 2htdp/image and math/matrix libraries of Racket.
It has 3 modes:
- Encrypt - Encrypt mode uses a random initial seed and rotor configuration and encrypts whatever you type. Finish by hitting Enter.
- Decrypt - Enter the random seed and rotor configuration used by the encryption and enter the encrypted message. Since Enigma is self reciprocal, the decrypt mode is exactly the encrypt mode with a given seed and rotor config.
- Crack - A module that would make Turing proud, this one attempts to guess the message given the encrypted message and a known message prefix.
The project report explains the methods used in great detail.
- Install DrRacket 7.1 or above. See https://racket-lang.org/download/
- Run
racket board.rkton the terminal. - Enjoy!