What is JWT authentication in ASP.NET?

What is JWT authentication in ASP.NET?

JWT (JSON Web Token) authentication is a method used to securely transmit information between parties as a JSON object. In ASP.NET, it allows for stateless authentication, meaning the server does not need to store session information.

How does JWT improve security in web applications?

JWT improves security by ensuring that the information is digitally signed, which helps to verify the authenticity of the sender and the integrity of the message. It also allows for token expiration, reducing the risk of token misuse.

Can you explain how to implement JWT in an ASP.NET application?

To implement JWT in an ASP.NET application, you typically need to install the necessary NuGet packages, configure authentication in the Startup class, and create a method to generate tokens after user login.

What are the common pitfalls to avoid when using JWT?

Common pitfalls include not validating the token properly, using weak signing algorithms, and failing to implement token expiration and refresh mechanisms.