Classical Ciphers Encryption Tool

A modern web-based encryption tool that allows users to encrypt and decrypt text using three classical cipher techniques: Caesar, Vigenère, and Playfair. Built with a sleek and user-friendly graphical interface, this project makes classical encryption accessible and easy to use.

Live Demo

Experience the tool live here: Classical Ciphers

Table of Contents

• About the Project
• Features
• Technologies Used
• Installation
• Usage
• Contributing
• License

About the Project

This project provides an intuitive GUI that enables users to encrypt and decrypt text using three different classical ciphers:

1. Caesar Cipher – A simple substitution cipher that shifts each letter in the plaintext by a fixed number of positions.
2. Vigenère Cipher – A polyalphabetic substitution cipher that uses a repeating keyword to determine shifting values.
3. Playfair Cipher – A digraph substitution cipher that encrypts text using a 5x5 grid generated from a keyword.

The application allows users to select a cipher, enter text, provide necessary key inputs, and obtain encrypted or decrypted results instantly.

Features

• User-friendly dark-themed graphical interface with a modern look.
• Supports encryption and decryption for Caesar and Vigenère ciphers.
• Playfair cipher supports encryption only.
• Instructions section to guide users.
• Fully responsive design.
• Built using React.js and Tailwind CSS.

Technologies Used

• React.js – Frontend framework for building the user interface.
• Tailwind CSS – Styling framework for responsive and modern design.
• JavaScript (ES6+) – Core logic for encryption and decryption algorithms.
• Netlify – Deployment platform for hosting the web application.

Installation

To run this project locally, follow these steps:

1. Clone the repository:

   git clone https://github.com/your-username/your-repo.git
   

2. Navigate to the project directory:

   cd classical-ciphers
   

3. Install dependencies:

   npm install
   

4. Start the development server:

   npm start
   

Usage

1. Select a cipher type (Caesar, Vigenère, or Playfair).
2. Enter the text you want to encrypt or decrypt.
3. For Caesar Cipher, enter a shift value (number).
4. For Vigenère/Playfair Ciphers, enter a keyword.
5. Click the Encrypt or Decrypt button to see the result.
6. The Playfair cipher currently supports encryption only.

Contributing

Contributions are welcome! To contribute:

1. Fork the repository.
2. Create a new branch (git checkout -b feature-branch).
3. Make your changes and commit (git commit -m 'Add new feature').
4. Push to the branch (git push origin feature-branch).
5. Open a Pull Request.

License

This project is licensed under the MIT License.

Feel free to modify this README to better fit your project's needs!