Authentication and Authorization with JWT in deep.

Question

Accepted Answer

JWT is a popular method for authentication and authorization in web applications.

JWT stands for JSON Web Token, a compact and self-contained way to securely transmit information between parties as a JSON object.
Authentication is the process of verifying the identity of a user, while authorization determines what actions a user is allowed to perform.
JWTs are commonly used in web applications to authenticate users and provide access control based on the information contained in the token.
JWTs consist of three parts: header, payload, and signature, which are base64 encoded and separated by dots.
Example: A user logs in with their credentials, the server generates a JWT containing the user's information, and the client includes the JWT in subsequent requests to access protected resources.

Popular interview questions of Senior Software Engineer