Secure Authentication System
2024-02-15
Secure Authentication System
A comprehensive authentication system implementing modern security best practices, including multi-factor authentication, JWT handling, and secure password management.
Features
- Multi-factor authentication (MFA)
- JWT-based session management
- Password strength enforcement
- Rate limiting and brute force protection
- Secure password reset flow
- OAuth2 integration (Google, GitHub, etc.)
- Audit logging
- Admin dashboard for user management
Technologies Used
- Node.js & Express
- TypeScript
- PostgreSQL with TypeORM
- Redis for session management
- Docker & Docker Compose
- Jest for testing
- GitHub Actions for CI/CD
Security Features
- Argon2 password hashing
- CSRF protection
- XSS prevention
- Content Security Policy (CSP)
- Rate limiting
- IP-based blocking
- Security headers (using Helmet)
- Input validation and sanitization
Implementation Details
The system is built with security as the primary focus, implementing multiple layers of protection:
// Example of the authentication flow
interface AuthResponse {
token: string;
refreshToken: string;
mfaRequired: boolean;
}
async function authenticate(
email: string,
password: string
): Promise<AuthResponse> {
// Rate limiting check
await checkRateLimit(email);
// Verify credentials
const user = await verifyCredentials(email, password);
// Generate tokens
const token = generateJWT(user);
const refreshToken = generateRefreshToken(user);
// Check MFA requirement
const mfaRequired = await checkMFARequired(user);
return { token, refreshToken, mfaRequired };
}