📧 Real-Time End-to-End Encrypted Chat Application

A secure, real-time chat application built with React.js, Node.js, Socket.io, and MySQL. This project uses end-to-end encryption to ensure that messages are only readable by the intended recipients, providing a safe and private communication experience. Authentication is handled using Firebase Google OAuth, and the user interface is styled with Tailwind CSS and Daisy UI.

Demo

bandicam.2024-09-23.21-24-57-671.mp4

🚀 Features

• Real-Time Messaging: Instant message delivery and updates using Socket.io for real-time bi-directional communication.
• End-to-End Encryption:
  • Messages are encrypted using the recipient’s public key before being sent.
  • Only the recipient can decrypt the message using their private key, ensuring privacy and security.
  • Implemented with the Forge cryptography library.
• Google Authentication:
  • Simple and secure authentication via Firebase Google OAuth, allowing users to sign in with their Google accounts.
• Modern UI/UX:
  • Clean, responsive design with React.js, styled using Tailwind CSS and Daisy UI.
• MySQL Database: Efficient and structured data storage for managing chat histories.

🛠️ Technologies Used

• Frontend:

  • React.js
  • Tailwind CSS
  • Daisy UI

• Backend:

  • Node.js
  • Express.js
  • Socket.io

• Database:

  • MySQL

• Security:

  • Forge for end-to-end encryption

• Authentication:

  • Firebase Google OAuth

🔧 Setup & Installation

Prerequisites

• Node.js (v14.x or higher)
• MySQL
• Firebase project with Google OAuth setup

Steps to Install

1. Clone the repository:

   git clone https://github.com/ritesh2004/End-to-End_Encryption_chatting-app.git
   cd End-to-End_Encryption_chatting-app

2. Install dependencies:

   npm install

3. Set up environment variables:

   Create a .env file in the root directory and add your configuration for:

   • Firebase credentials
   • MySQL database credentials
   • Socket.io configuration

   Example:

   DATABASE_HOST=localhost
   DATABASE_USER=root
   DATABASE_PASSWORD=yourpassword
   DATABASE_NAME=chat_app_db

4. Set up MySQL database:

   Create a MySQL database and run the SQL scripts in the /db folder to create the required tables for user authentication and chat history.

5. Run the development server:

   npm run dev

6. Build for production:

   npm run build

🔒 How End-to-End Encryption Works

• Public-Private Key Pair: Each user has a public and private key. The public key is shared with other users, while the private key is kept secret.
• Message Encryption: Before sending a message, it is encrypted with the recipient's public key using the Forge library.
• Message Decryption: Upon receiving a message, the recipient uses their private key to decrypt and read the message.

This ensures that messages remain private and secure during transit.

🤝 Contributing

1. Fork the repository.
2. Create a new feature branch: git checkout -b feature-branch-name.
3. Commit your changes: git commit -m 'Add some feature'.
4. Push to the branch: git push origin feature-branch-name.
5. Open a pull request.