This is another Enigma Machine Simulator, a modern recreation of the historic cipher machine implemented in C++. Inspired by the JavaScript-based simulator at mckoss/enigma-simulator-js, this app allows users to explore the encryption and decryption processes that defined an era of secret communications. For an introduction to the Enigma machine's fascinating history and mechanics, the Wikipedia page provides a wealth of information.
This demonstrates encoding the message "HELLO WORLD" to "JBETS SKLVY" and then decoding it back to "HELLO WORLD".
$ docker-compose run app bash
root@94d9d645dfef:/# cd /enigma
root@94d9d645dfef:/enigma/src# g++ src/main.cpp -o main
// Encode
root@94d9d645dfef:/enigma/src# ./main
Default configuration: Reflector B, Rotors 1, 2, 3. Would you like to change? (y/n): n
Enter plugboard mappings (e.g., ABCDEF for A->B, C->D, E->F), or press Enter to skip: ARDKOX
Enter rotor positions (e.g., ABC): DOG
Enter ring settings (e.g., ABC): ABC
Reflector: B
Rotors: 123
Rotor positions: DOG
Ring settings: ABC
Plugboard: AR DK OX
Enter message: HELLO WORLD
Enciphered message: JBETS SKLVY
// Decode
Default configuration: Reflector B, Rotors 1, 2, 3. Would you like to change? (y/n): n
Enter plugboard mappings (e.g., ABCDEF for A->B, C->D, E->F), or press Enter to skip: ARDKOX
Enter rotor positions (e.g., ABC): DOG
Enter ring settings (e.g., ABC): ABC
Reflector: B
Rotors: 123
Rotor positions: DOG
Ring settings: ABC
Plugboard: AR DK OX
Enter message: JBETS SKLVY
Enciphered message: HELLO WORLDCopyright (c) 2024 Sho Ito. See LICENSE for further details.