User Authentication System

A simple user authentication and authorization system using Node.js, Express, Mongoose, bcrypt, and JWT.

Features

• User registration with hashed passwords
• User login with JWT generation
• Protected routes for authenticated users

Technologies Used

• Node.js
• Express
• Mongoose
• bcrypt
• jsonwebtoken
• dotenv

Getting Started

Prerequisites

• Node.js
• MongoDB (local or Atlas)

Installation

1. Clone the repo:

   git clone https://github.com/yourusername/repo-name.git
   cd repo-name
   
    Install dependencies:
   
    bash
   

npm install

Set up a .env file:

plaintext

SECRET_KEY=your_secret_key MONGODB_URI=your_mongodb_connection_string

Start the server:

bash

npm start

API Endpoints User Registration

POST /user/register: Create a new user.

User Login

POST /user/login: Authenticate user and return a JWT.

Get All Users (Protected)

GET /user/all: Requires JWT in Authorization header.

Usage

Use Postman or similar tools to test the API. Include the JWT in the Authorization header for protected routes. Contributing

Contributions are welcome! License

MIT License.