Where do you store JWT for spa?
A JWT needs to be stored in a safe place inside the user’s browser. If you store it inside localStorage, it’s accessible by any script inside your page. This is as bad as it sounds; an XSS attack could give an external attacker access to the token.
Is JWT RESTful?
JWT (shortened from JSON Web Token) is the missing standardization for using tokens to authenticate on the web in general, not only for REST services. Currently, it is in draft status as RFC 7519. It is robust and can carry a lot of information, but is still simple to use even though its size is relatively small.
Where is the JWT token stored in Spa?
A key component for doing this is a JWT token which holds authentication data that can be confidently transmitted between clients. A common pattern that I’ve seen in SPA is that developers tend to store JWT token in the browser’s local storage and then include the token in an authorization header for each request.
Is it safe to store JWT in localStorage?
These types of XSS attacks can get everyone’s Web Storage that visits your site, without their knowledge. This is probably why a bunch of organizations advise not to store anything of value or trust any information in web storage. This includes session identifiers and tokens.
How to handle JWT and cookies in Spa?
A simple solution is that we split JWT token into two cookies, one that holds payload and one with signature and header data. Payload cookie should have httpOnly flag set to false and signature.header cookie must have httpOnly flag set to true. Here is a diagram that shows the whole flow.
Can a browser read data from a JWT token?
A browser client can not read data that is sent via JWT token. This is especially important when the SPA needs to use session data for manipulating the app’s user interface. Like preventing some parts of the app to be shown to some user roles. JWT token is constructed of three parts: payload, signature, and header.