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Is JWT token based authentication?
There are many tokens based authentication available, a JSON web token (JWT) is one of them. OAuth is also another well-known mechanism. JWT follows a different technique for making it more secure because it is signed.
Arguably one of the largest use cases for JWT is authorization. We can generate a JWT token in the backend that is specific to a user, pass this JWT token to the frontend, and then our frontend can send this token alongside requests to access protected API routes. JWT tokens can be given an expiration time.
How does JWT authorization work?
How do JSON Web Tokens work?
- The application or client requests authorization to the authorization server.
- When the authorization is granted, the authorization server returns an access token to the application.
- The application uses the access token to access a protected resource (like an API).
What’s the difference between JWTs and Bearer Token?
JWTs are a convenient way to encode and verify claims. A Bearer token is just string, potentially arbitrary, that is used for authorization.
When to refresh a JWT token?
When there is an incoming request with Access Token that has become invalid , the application can send a Refresh Token to obtain a new Access Token. If the user’s session is still alive, the server would respond with a new valid JWT.
What is JWT validation?
The Validate JWT policy enables you to secure access to your APIs by using JWT validation. For example, when an input request that contains a JWT in the header is received, the Validate JWT policy extracts the token, verifies, and decrypts (if appropriate) the signature, and validates the claim.
Is a JWT usable as a CSRF token?
You could use a JWT as a CSRF token, but it would be needlessly complicated: a CSRF token doesn’t need to contain any claims, or be encrypted or signed. There is probably a misunderstanding about what JWT or CSRF tokens are used for (I was confused at first too). The JWT is an access token, used for authentication.