How to use JWT for Authentication and Authorization In JWT

JSON Web Tokens (JWT) are compact, URL-safe tokens that contain JSON data and are digitally signed. They can securely transmit information between parties and are commonly used for authentication and authorization in web applications.

Implementation Steps

• User Authentication: When a user logs in, the server generates a JWT containing the user’s identity and signs it with a secret key. This token is then sent back to the client, which stores it locally (e.g., in localStorage or sessionStorage).
• Authorization Middleware: In GraphQL resolvers or middleware, the server verifies the JWT sent by the client. If the token is valid and contains the necessary permissions, the server allows the requested operation to proceed. Otherwise, it returns an error or denies access.

Authentication and authorization are important aspects of building secure web applications by including those powered by GraphQL. JSON Web Tokens (JWT) provide a popular mechanism for implementing authentication and authorization in GraphQL applications.

In this article, we’ll explore the concepts of authentication and authorization with JWT in a GraphQL application by covering their implementation, and benefits.