How do you handle user authentication and authorization in web application security?

User authentication and authorization are essential for ensuring the security of web applications. Here is a detailed explanation of how these processes are typically handled:

User Authentication:

• Encrypting passwords: Storing passwords securely using hashing algorithms like bcrypt or scrypt.
• Secure protocols: Using HTTPS to encrypt data transmitted between the client and server.
• Multi-factor authentication: Implementing additional layers of protection such as SMS codes or biometric scans.

User Authorization:

• Role-based access control: Assigning roles (admin, user, guest) to users and defining permissions for each role.
• Token-based authentication: Issuing tokens (JWTs) to authenticated users to access protected resources.
• Session management: Keeping track of user sessions and ensuring they expire after a certain period of inactivity.