Post by rubina9898 on Dec 20, 2023 22:50:24 GMT -4
If you want to accept unsigned tokens you can use the method decode. This reduces the risk of introducing security errors related to lack of signature verification. Practical advice Finally based on what was presented in the article I leave a handful of tips that will help you work more safely with JWT JWT does not define token lifetime by default . If the token lifetime is important in your application remember to define it JWT does not provide mechanisms for invalidating generated tokens . If you need to withdraw the token you created this will need to be handled from within the application. For this purpose you can use the blacklist mechanism containing a list of revoked tokens or the whitelist mechanism containing a list of allowed tokens.
In some cases an alternative may be to generate tokens with a short lifetime in the context of the above information consider whether JWT is the right solution for you. For example in the Phone Number List case of authentication mechanisms you may prefer the classic user session mechanism. It's not always worth going for what's cool and fashionable. There's a reason why KISS is one of the core programming best practices for authentication and authorization the JWT is usually sent inthe value Bearer twój_token I intentionally did not focus on describing the implementation details related to the JWT implementation. I am a supporter of using ready made solutions even if they sometimes contain vulnerabilities.
I believe that as with encryption and hashing algorithms creating your own JWT solutions will almost always be a bad idea. I wrote the word “almost” out of caution do not allow use none as claim value alg . Tokens with this value should be discarded it is worth remembering that valid and correct leaked tokens can be used to impersonate another user in the application and perform actions on his behalf Sign tokens with a private key or a suitably strong secret. The secret should not be easy to guess using dictionaries and brute force attack if the token contains sensitive data consider using JSON Web Encryption. Summary I know that this article is a powerful pill of knowledge and new information.
In some cases an alternative may be to generate tokens with a short lifetime in the context of the above information consider whether JWT is the right solution for you. For example in the Phone Number List case of authentication mechanisms you may prefer the classic user session mechanism. It's not always worth going for what's cool and fashionable. There's a reason why KISS is one of the core programming best practices for authentication and authorization the JWT is usually sent inthe value Bearer twój_token I intentionally did not focus on describing the implementation details related to the JWT implementation. I am a supporter of using ready made solutions even if they sometimes contain vulnerabilities.
I believe that as with encryption and hashing algorithms creating your own JWT solutions will almost always be a bad idea. I wrote the word “almost” out of caution do not allow use none as claim value alg . Tokens with this value should be discarded it is worth remembering that valid and correct leaked tokens can be used to impersonate another user in the application and perform actions on his behalf Sign tokens with a private key or a suitably strong secret. The secret should not be easy to guess using dictionaries and brute force attack if the token contains sensitive data consider using JSON Web Encryption. Summary I know that this article is a powerful pill of knowledge and new information.