CiphersInRuby

An Implementation of a few popular Breakable Ciphers in Ruby.

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Implementation Details

This implementation uses Docker and the Compose utility to easily run the services below:

• Ruby on Rails
• Sidekiq

Requirements:

• Docker: Latest
• Docker Compose: Latest

Tested On:

• Windows
• Ubuntu 22.04

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Running

To run this application locally, run this command in the repository directory:

> docker compose up

Alternatively you can see a live demo here

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Ciphers

Below is the list of ciphers implemented:

• Alphabet (26 Letters):
  • Vigenere Cipher
  • Auto-Key Vigenere Cipher
  • Playfair Cipher
  • Affine Cipher
  • Hill Cipher
  • Enigma Cipher
• ASCII (256 Characters):
  • Extended Vigenere Cipher
  • Extended Vigenere Cipher with transposition

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Misc

• The model used for the Enigma Cipher is the "Enigma I" using rotors I, II, and III and reflector UKW-B
• The notch is calculated using the turnover stated on the site as it is easier to get the value of the window compared to the physical position of the notch.
• The rotor positions are calculated using the sum of representation numbers in the plugboard e.x. if the plugboard is "ab", then the seed is 1 and the random value will thus be 5, 11, and 12 which will be the position of the rotors initially`
• The rotors will be activated in the order rotor3 -> rotor2 -> rotor1 -> reflector -> rotor1 -> rotor2 -> rotor3