jwt-authentication

JWT authentication in Node.js uses JSON Web Tokens for secure user sessions by generating access tokens for protected routes and refresh tokens to maintain login state without re-entering credentials. This process includes password hashing and token verification middleware.

Role-based access control (RBAC) in a Node.js app restricts route access by verifying user permissions through middleware. It checks JWT claims against required roles before allowing entry to protected endpoints, ensuring only authorized users can execute specific operations.

Token refresh and revocation maintain secure user sessions by issuing new access tokens using valid refresh tokens. Revocation invalidates existing tokens to immediately block access when users log out or when session security is compromised.

Yes, JWT authentication handles user signup and login flows by hashing passwords during registration and verifying credentials during login. It then generates access and refresh tokens to authenticate subsequent requests to protected routes.

Password hashing is required for JWT authentication in Node.js to protect user credentials by converting plain-text passwords into irreversible hashes. This ensures that even if the database is compromised, the actual login secrets remain secure.

Yes, JWT middleware can be selectively applied to protect specific routes in Node.js applications. You wire up the token verification middleware on individual endpoints to enforce authentication and role-based access control only where needed.