MERN Authentication

A professional, secure, and modern authentication system built with the MERN stack. Features include OTP verification via Gmail, JWT-based authentication, bcrypt password hashing, and robust security best practices. The frontend is crafted with React.js and Tailwind CSS for a seamless user experience.

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✨ Features

• OTP Verification: Secure one-time password sent to user’s Gmail for authentication.
• JWT Authentication: Stateless and secure session management.
• Bcrypt Password Hashing: Strong password encryption for user data protection.
• Modern UI: Responsive and attractive interface using React.js & Tailwind CSS.
• Hardened Security: Follows best practices to prevent common vulnerabilities.

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🚀 Getting Started

1. Clone the Repository

git clone https://github.com/roshan-metrix/MERN_Authentication.git
cd MERN_Authentication

2. Backend Setup

cd backend
npm install

Create a .env file in the backend directory:

PORT = 3000
MONGODB_URI = your mongodb url i.e 'mongodb://localhost:27017' for locally 
JWT_SECRET = your jwt secret i.e 'hello12'
NODE_ENV = 'development'
EMAIL_ID = your email
PASSWORD = your email pass

Note: Use Gmail App Passwords for secure email sending.

Start the backend server:

npm run server

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3. Frontend Setup

cd ../client
npm install

Start the frontend development server:

npm start

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🛡️ Security Highlights

• Environment variables for sensitive data
• Rate limiting and input validation
• Secure HTTP headers
• Passwords never stored in plain text

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📄 License

This project is licensed under the MIT License.

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Ready to use, secure, and scalable authentication for your next MERN project,enjoy it!