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How does JWT provide security?
Using JWTs securely goes beyond verifying their signatures. Apart from the signature, the JWT can contain a few other security-related properties. These properties come in the form of reserved claims that can be included in the body of the JWT. The most crucial security claim is the “exp” claim.
Are sessions more secure than JWT?
1 Answer. There are several reasons people say JWTs are more secure. JWT can either be stored in a cookie or Web Storage( local/session Storage ). If you are not storing your JWTs in a cookie, then you are not vulnerable to CSRF.
Can JWT be used for session management?
JWT doesn’t have a benefit over using “sessions” per se. JWTs provide a means of maintaining session state on the client instead of doing it on the server.
Should JWT be used for sessions?
Although JWT does eliminate the database lookup, it introduces security issues and other complexities while doing so. Security is binary—either it’s secure or it’s not. Thus making it dangerous to use JWT for user sessions.
When should JWT expire?
JWT Token has an expiration of 2 hours. The token is refreshed every hour by the client. If the user token is not refreshed (user is inactive and the app is not open) and expires, they will need to log in whenever they want to resume.
How does JWT expire?
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).
How are JWTs used to maintain session state?
JWTs provide a means of maintaining session state on the client in stead of doing it on the server. With server-side sessions you will either have to store the session identifier in a database, or else keep it in memory and make sure that the client always hits the same server.
What happens to JWT tokens if secret key is changed?
If the secret key is changed, all the JWT tokens will be modified. However, the symmetric JWT signatures don’t resolve the second problem in sessions. The secret key has to be shared across servers. All the services need the same secret key to ensure on the integrity of the client request.
Is it safe to use JWTs for authentication?
While JWTs does not answer the other issues like secure storage or transport, it does not introduce any new security issues. A lot of negativity exists around JWTs, but if you implement the same security that you would for other types of authentication, you will be fine. One final note: It is also not Cookies vs Tokens.
Is it hard to invalidate a JWT session?
JWT sessions can sometimes be hard to invalidate. Trusting the client’s claim. These issues are shared by JWTs and other client-side session mechanisms alike. JWT, in particular, addresses the last of these.