Here's a clear step-by-step guide for implementing and using the Identity & Access Module:

---

Identity & Access Module

Step-by-Step Implementation Guide

🚀 1. Prerequisites Setup

# Install Node.js (v18+) and npm
brew install node  # MacOS
choco install nodejs  # Windows

# Install MongoDB (or use Docker)
docker run -d -p 27017:27017 --name auth-mongo mongo:6

# Install Redis for rate limiting (optional)
docker run -d -p 6379:6379 --name auth-redis redis

📦 2. Install the Module

# Option A: NPM
npm install @prettygirllz/identity-access

# Option B: Docker
docker pull prettygirllz/identity-access:latest

# Option C: Clone repository
git clone https://github.com/prettygirllz/identity-access.git
cd identity-access && npm install

⚙️ 3. Configuration

Create .env file:

# Required
MONGO_URI=mongodb://localhost:27017
DB_NAME=auth_dev
JWT_SECRET=your_32char_secure_key_here
ENCRYPTION_KEY=32_char_key_for_field_encryption

# Optional
PORT=3000
GRPC_PORT=50051
RATE_LIMIT=100/15m  # 100 requests per 15 minutes

🛠️ 4. Integration (Express Example)

// server.js
const express = require('express');
const iam = require('@prettygirllz/identity-access')({
  mongoUri: process.env.MONGO_URI,
  jwtSecret: process.env.JWT_SECRET
});

const app = express();
app.use(express.json());

// 4.1 Add Authentication Routes
app.post('/login', async (req, res) => {
  try {
    const token = await iam.auth.login(req.body.email, req.body.password);
    res.json({ token });
  } catch (err) {
    res.status(401).json({ error: err.message });
  }
});

// 4.2 Add Protected Route Middleware
app.get('/profile', 
  iam.middlewares.authenticate,  // JWT verification
  (req, res) => {
    res.json({ user: req.user });  // User data from JWT
  }
);

app.listen(3000, () => console.log('Server running on port 3000'));

🔐 5. User Management

// Create admin user (first-run setup)
const createAdmin = async () => {
  await iam.users.create({
    email: '[email protected]',
    password: 'SecurePass123!',
    roles: ['admin'],
    metadata: { 
      name: 'System Admin',
      // Encrypted automatically:
      ssn: '123-45-6789'  
    }
  });
};

🛡️ 6. Authorization Setup

// config/roles.js
module.exports = {
  admin: {
    permissions: ['users:create', 'users:delete', 'content:*'],
    inherits: ['editor']
  },
  editor: {
    permissions: ['content:create', 'content:edit']
  }
};

// In your route:
app.delete('/users/:id',
  iam.middlewares.authenticate,
  iam.middlewares.authorize('users:delete'),
  (req, res) => { /* ... */ }
);

📡 7. gRPC Setup (Optional)

// adapters/grpc/auth.proto
service AuthService {
  rpc Login (LoginRequest) returns (AuthResponse);
  rpc VerifyToken (TokenRequest) returns (TokenInfo);
}

// Start server
iam.grpc.start(process.env.GRPC_PORT);

🧪 8. Testing

# Unit tests
npm test

# Integration test (requires MongoDB)
curl -X POST http://localhost:3000/login \
  -H "Content-Type: application/json" \
  -d '{"email":"[email protected]","password":"SecurePass123!"}'

# Expected response:
# { "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." }

🚀 9. Deployment

# Build Docker image
docker build -t your-registry/identity-access:1.0 .

# Kubernetes example (deployment.yaml)
apiVersion: apps/v1
kind: Deployment
metadata:
  name: identity-access
spec:
  containers:
    - name: auth
      image: your-registry/identity-access:1.0
      envFrom:
        - secretRef:
            name: auth-secrets

🔄 10. Maintenance

# Key rotation procedure:
1. Update JWT_SECRET in .env
2. Notify clients to re-authenticate
3. Set old token expiration to 5 minutes during transition

# Monitoring:
- Track failed login attempts
- Monitor token generation rate
- Audit role changes

---

Key Features Implemented:

1. End-to-End Encryption

   • All sensitive fields automatically encrypted in MongoDB

   // Example stored document:
   {
     email: 'EncryptedBase64String==',
     ssn: 'EncryptedBase64String==',
     _keyVersion: 2  // Supports key rotation
   }
   

2. Zero-Trust Security Model

   • JWT tokens contain minimal claims
   • Every request requires re-authorization
   • IP-based anomaly detection

3. Multi-Protocol Support

   graph LR
   A[Client] -->|REST| B[Express/Fastify]
   A -->|gRPC| C[Microservices]
   B & C --> D[Core Auth]
   D --> E[MongoDB]
   

Need additional help? Contact [email protected] for production deployment support.