Cryptography - Classical Cipher Tools

This project is a collection of classical cryptography tools, offering both a Command Line Interface (CLI) and a Graphical User Interface (GUI) to encrypt, decrypt, and perform brute-force attacks on various historical ciphers.

🚀 Features

• Support for multiple ciphers: ROT (Caesar), Substitution, Atbash, Vigenère, Rail Fence, Columnar Transposition, and Numeric Value.
• Operations: Encryption, decryption, key generation, and detailed tool information.
• Dual Interface: Use the power of the terminal or the convenience of a graphical window.
• Flexible Input: Enter text directly or load text files.

🛠️ Installation

Ensure you have Python 3 installed. To use the graphical interface, install the necessary dependencies:

pip install customtkinter CTkMessagebox

💻 Command Line Interface (CLI) Usage

The main tool is crypto.py. The general syntax is:

python3 crypto.py [TOOL] [OPERATION] [-t TEXT/FILE] [-k KEY/FILE]

Examples:

• Caesar Cipher (ROT):

  python3 crypto.py --rot -e -t "Hello World" -k 3

• Atbash Cipher:

  python3 crypto.py --atbash -e -t "Hello World"

• Brute Force on Rail Fence:

  python3 crypto.py --railfence -b -t "HAOMUDNLO"

• Generate a key for Substitution:

  python3 crypto.py --subst -g

🖼️ Graphical User Interface (GUI)

To launch the graphical interface, simply run:

python3 cryptogui.py

The GUI allows you to select the tool and operation intuitively, facilitating the loading of files for text and keys.

📜 Supported Ciphers

Tool	Operations	Key Type
ROT	Encrypt, Decrypt, Brute Force, Generate	Integer (int)
SUBST	Encrypt, Decrypt, Generate	26-character string
ATBASH	Encrypt, Decrypt	N/A
VIGENERE	Encrypt, Decrypt, Generate	String (str)
RAIL FENCE	Encrypt, Decrypt, Brute Force, Generate	Integer (int)
COLUMNAR	Encrypt, Decrypt, Generate	String (str)
NUMVAL	Encrypt, Decrypt	N/A

🛠️ Development

If you wish to contribute or add new tools, refer to the following guide:

• How to Add New Tools