Mon 29 Aug 2022

Enigma Lorenz

Available on GitHub

Enigma and Lorenz

This is a collection of utilities for encrypting messages using virtual Enigma and Lorenz machines.

Binaries

Pre-built binaries for Windows, Linux, and MacOS (ARM) are available in the Releases (64 bit only). They are standalone, compiled binaries and so do not need Go installed to run.

Building From Source

Binary files can also be built from source if you have Go installed. To compile them, navigate to the directory this README is in and run the commands:

go build -o enigma EnigmaLorenz/cmd/enigma go build -o lorenz EnigmaLorenz/cmd/lorenz

Enigma

To get a list of possible commands run enigma with a -h flag:

Usage of enigma:
-c string
    Center rotor number (I-VIII), position (1-26), and ring setting (0-25) (default "II 1 0")
-f string
    Fourth rotor (beta|gamma), position (1-26), and ring setting (0-25) [optional]
-l string
    Left rotor number (I-VIII), position (1-26), and ring setting (0-25) (default "I 1 0")
-m string
    The message to be encrypted/decrypted
-plugs string
    Plug mappings in the form of 'A:B C:D'[optional], position, and ring setting
-r string
    Right rotor number (I-VIII), position (1-26), and ring setting (0-25) (default "III 1 0")
-ukw string
    Reflector to use (A|B|C|a|b) (default "B")

Example Input

Using default rotor settings

$ enigma -m "hello world"
ILBDAAMTAZ
$ enigma -m "ILBDAAMTAZ"
HELLOWORLD

Using custom rotor settings

$ enigma -m "hello world" -l "I 4 13" -c "IV 13 24" -r "II 12 23" -ukw "C"
JBVTUFTEYI
$ enigma -m "JBVTUFTEYI" -l "I 4 13" -c "IV 13 24" -r "II 12 23" -ukw "C"
HELLOWORLD

Lorenz

To get a list of possible commands run enigma with a -h flag:

Usage of lorenz:
  -psi string
        The rotor setting for the Psi wheels (default "0 0 0 0 0")
  -chi string
        The rotor setting for the Chi wheels (0-max) (default "0 0 0 0 0")
  -d    Whether you are seeking to decrypt a message (0-max)
  -m string
        The message to be encrypted/decrypted
  -mot string
        The rotor setting for the Motor wheels (0-max) (default "0 0")

Example Input

Using default rotor settings

$ lorenz -m "hello world"
K_BB|DWTTP^
$ lorenz -d -m "K_BB|DWTTP^" # Note the -d for decrypt
HELLO WORLD

Using custom rotor settings

$ lorenz -m "hello world" -psi "1 3 14 5 6" -chi "23 14 5 6" -mot "30 17"
B RLIGMLLUN
$ lorenz -d -m "B RLIGMLLUN" -psi "1 3 14 5 6" -chi "23 14 5 6" -mot "30 17"
HELLO WORLD