A secure and modular authentication system built using Node.js, Express, JWT, and bcrypt.
It provides secure user registration, login, password hashing, token-based authentication, and protected routes.
User-Authentication-System/ │── routes/ │ ├── auth.js │ ├── middleware/ │ └── models/ │ │── server.js │── package.json │── package-lock.json │── .gitignore │── example.env
```bash git clone https://github.com/YOUR_USERNAME/User-Authentication-System.git
2️⃣ Install Dependencies npm install
3️⃣ Create .env JWT_SECRET=your_secret_key MONGO_URI=your_mongodb_url
4️⃣ Start Server node server.js
Server will run at: 👉 http://localhost:5000
📡 API Endpoints ➤ Register User POST /register
{ “name”: “Sumaira”, “email”: “sumaira@example.com”, “password”: “123456” }
➤ Login User POST /login
➤ Protected Route GET /protected-route
Accessible only with valid JWT token.
🔒 Security Notes
.env file is never uploaded
Passwords are encrypted using bcrypt
JWT ensures secure, stateless authentication
📜 License
This project is proprietary & protected. Unauthorized copying, distribution, or modification is strictly prohibited. © 2025 Sumaira