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📄 README.md

# 🔐 Enterprise Authentication & Authorization System

A production-grade backend system implementing **JWT authentication, session management, RBAC → ABAC authorization, OTP login, Google OAuth, and advanced security protections**.

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## 🚀 Overview

This project is a **secure, scalable authentication platform** designed for modern applications.

It supports:
- Multi-device sessions
- Role & attribute-based access control
- Audit logging & security monitoring
- Multiple login methods (Password, OTP, OAuth)

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## 🧠 Architecture

Frontend (Next.js) ↓ Backend (Node.js + Express) ↓ Database (PostgreSQL + Prisma)

Security Layers:

• JWT + Refresh Tokens
• Session Store (DB)
• ABAC Policy Engine
• Audit Logs

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## ✨ Features

### 🔐 Authentication
- JWT Access + Refresh Tokens
- Secure cookie-based session handling
- Refresh token rotation (anti-replay)
- Multi-device login support

### 🔑 Authorization
- RBAC (Admin / Handler / User)
- ABAC (attribute-based access control)
- Ownership & hierarchy enforcement

### 📱 Login Methods
- Email + Password
- OTP (phone-based)
- Google OAuth (restricted access)

### 🛡️ Security
- HTTP-only cookies (XSS protection)
- CSRF protection
- Rate limiting (anti-brute force)
- Account lock after failed attempts
- Device & IP binding
- Token reuse detection

### 📊 Monitoring
- Audit logs (login, logout, actions)
- Suspicious activity detection
- Admin security dashboard APIs

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echo "# Authentication-RBAC" >> README.md
git init
git add README.md
git commit -m "first commit"
git branch -M main
git remote add origin https://github.com/Vipul99999/Authentication-RBAC.git
git push -u origin main

## 📁 Project Structure

```

backend/
├── prisma/
├── src/
│   ├── config/
│   ├── middleware/
│   ├── modules/
│   │   ├── auth/
│   │   ├── user/
│   │   ├── admin/
│   │   ├── otp/
│   │   ├── session/
│   │   ├── audit/
│   │   └── location/
│   ├── utils/
│   ├── types/
│   └── constants/
├── .env
├── prisma.config.ts
└── package.json

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⚙️ Setup & Installation

1️⃣ Clone repo

git clone <your-repo-url>
cd backend

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2️⃣ Install dependencies

npm install

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3️⃣ Setup environment variables

Create .env:

PORT=5000

DATABASE_URL=postgresql://user:password@localhost:5432/db

JWT_ACCESS_SECRET=your_access_secret
JWT_REFRESH_SECRET=your_refresh_secret

ACCESS_TOKEN_EXPIRES=15m
REFRESH_TOKEN_EXPIRES=1d

GOOGLE_CLIENT_ID=your_google_client_id
GOOGLE_CLIENT_SECRET=your_google_secret
FRONTEND_URL=http://localhost:3000

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4️⃣ Run Prisma

npx prisma generate
npx prisma migrate dev

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5️⃣ Start server

npm run dev

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🔄 Authentication Flow

1. User logs in (Password / OTP / OAuth)
2. Access Token issued (short-lived)
3. Refresh Token stored in HTTP-only cookie
4. Session stored in database
5. Token rotation on refresh

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🧩 RBAC → ABAC

RBAC (Basic)

Admin → full access
Handler → limited access
User → minimal access

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ABAC (Advanced)

Access based on:

• User attributes (role, location)
• Resource attributes (owner, district)
• Context (IP, device)

Example:

Handler can access users only in same district
User can access only own profile

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🔐 Security Design

Feature	Protection
JWT + Rotation	Prevent replay attacks
HTTP-only cookies	Prevent XSS
attacks
Rate limiting	Prevent brute force
Account lock	Stop repeated failures
Device/IP binding	Prevent session hijacking
Token reuse detection	Detect stolen tokens

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📊 Admin APIs

Endpoint	Description
/admin/dashboard	System stats
/admin/security	Security insights
/admin/audit	Audit logs
/admin/sessions/:userId	User devices
/admin/security/suspicious	Suspicious users

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📱 OTP APIs

Endpoint	Description
/otp/send	Send OTP
/otp/verify	Verify OTP

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🔐 Auth APIs

Endpoint	Description
/auth/register	Create user
/auth/login	Login
/auth/refresh	Refresh token
/auth/logout	Logout
/auth/google	Google OAuth

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👤 User APIs

Endpoint	Description
/user/me	Get profile
/user/update	Update profile
/user/change-password	Change password
/user/set-pin	Set PIN
/user/change-pin	Change PIN

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🧪 Testing

You can test APIs using:

• Postman
• Thunder Client
• curl

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🚀 Deployment (Recommended)

• Docker
• AWS EC2 / ECS
• Nginx (reverse proxy)
• HTTPS (SSL)

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🧠 Future Improvements

• Multi-factor authentication (MFA)
• WebAuthn / Passkeys
• Multi-OAuth providers (GitHub, Apple)
• Real-time security alerts (WebSockets)
• Policy DSL (AWS IAM style)

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❤️ Built With

• Node.js + Express
• Prisma + PostgreSQL
• TypeScript
• Zod
• JWT + OAuth

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👨‍💻 Author

Built as a production-grade authentication system for learning and real-world use.

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⭐ If you like this project

Give it a star ⭐ and use it in your projects!