Objective:

To develop a secure and user-friendly authentication system that allows users to register, log in, log out, and securely manage sessions, ensuring data protection and unauthorized access prevention.

Technologies Used:

• Frontend: HTML, CSS, Bootstrap, JavaScript

• Backend: PHP / Java / Node.js

• Database: MySQL / PostgreSQL / MongoDB

• Security Tools: bcrypt or SHA-256 for password hashing, CAPTCHA, CSRF tokens, HTTPS (SSL)

Key Features:

1. User Registration:

   • Collects username, email, password, etc.

   • Validates input data on frontend and backend.

   • Encrypts passwords using hashing (e.g., bcrypt or SHA-256).

   • Stores user data securely in the database.

2. Login System:

   • Authenticates users by comparing hashed passwords.

   • Redirects to the dashboard upon successful login.

   • Prevents SQL injection with parameterized queries.

3. Session Management:

   • Uses secure sessions or JWTs (JSON Web Tokens).

   • Prevents session hijacking using session regeneration on login.

4. Logout Functionality:

   • Destroys session/token and logs the user out securely.

5. Forgot Password / Reset Password:

   • Sends OTP/email link for secure password reset.

   • Ensures token-based password change requests with expiration.

6. CAPTCHA Integration (Optional):

   • To avoid bots or brute-force login attempts.

7. Account Lockout Mechanism:

   • Temporarily disables login after multiple failed attempts.