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How do you reset old tokens in JWT?
The most common solution is to reduce the duration of the JWT and revoke the refresh token so that the user can’t generate a new JWT. With this setup, the JWT’s expiration duration is set to something short (5-10 minutes) and the refresh token is set to something long (2 weeks or 2 months).
What is default expiration time of JWT token?
The JWT access token is only valid for a finite period of time. Using an expired JWT will cause operations to fail. As you saw above, we are told how long a token is valid through expires_in. This value is normally 1200 seconds or 20 minutes.
How to make JWT token invalid when logging out / changing password?
When the user takes the previous token for authentication next time, find the token stored in the user’s database, and compare the two. If the same token is passed, otherwise the user is allowed to log in. There is a problem, if you do this, if you have two devices, it will be dead cycle.
Which is the best way to invalidate a JWT?
Hence while invalidating a JWT, I follow the below steps: Check whether the token is valid or not. If valid, check it is present in invalidTokenDB (a database where logged out tokens are stored till their expiry time). If its not present, then check the token created time and changed password time in user db.
How to invalidate JSON tokens for authenticated requests?
For authenticated requests, the client can use the JWT but when the token expires (or is about to expire), let the client make a request with the refresh token in exchange for a new JWT. This way you would only have to hit the database when a user logs in or asks for a new JWT.
What happens if you change the secret on a JWT?
If your server creates the JWT, signs it with a secret (JWS) then sends it to the client, simply changing the secret will invalidating all existing tokens and require all users to gain a new token to authenticate as their old token suddenly becomes invalid according to the server.