Below are the steps to do revoke your JWT access token: When you do log in, send 2 tokens (Access token, Refresh token) in response to the client. The access token will have less expiry time and Refresh will have long expiry time. The client (Front end) will store refresh token in his local storage … Read more
That’s because the request inside getServerSideProps doesn’t run in the browser – where cookies are automatically sent on every request – but actually gets executed on the server, in a Node.js environment. This means you need to explicitly pass the cookies to the axios request to send them through. export async function getServerSideProps({ req }) … Read more
The best HTTP header for your client to send an access token (JWT or any other token) is the Authorization header with the Bearer authentication scheme. This scheme is described by the RFC6750. Example: GET /resource HTTP/1.1 Host: server.example.com Authorization: Bearer eyJhbGciOiJIUzI1NiIXVCJ9TJV…r7E20RMHrHDcEfxjoYZgeFONFh7HgQ If you need stronger security protection, you may also consider the following IETF … Read more
In most of the modern single page applications, we indeed have to store the token somewhere on the client side (most common use case – to keep the user logged in after a page refresh). There are a total of 2 options available: Web Storage (session storage, local storage) and a client side cookie. Both … Read more
Working unicode text JWT parser function: function parseJwt (token) { var base64Url = token.split(‘.’)[1]; var base64 = base64Url.replace(/-/g, ‘+’).replace(/_/g, “https://stackoverflow.com/”); var jsonPayload = decodeURIComponent(atob(base64).split(”).map(function(c) { return ‘%’ + (’00’ + c.charCodeAt(0).toString(16)).slice(-2); }).join(”)); return JSON.parse(jsonPayload); };
We need to store the JWT on the client computer. If we store it in a LocalStorage/SessionStorage then it can be easily grabbed by an XSS attack. If we store it in cookies then a hacker can use it (without reading it) in a CSRF attack and impersonate the user and contact our API and … Read more
I answered this question: How to secure an ASP.NET Web API 4 years ago using HMAC. Now, lots of things changed in security, especially that JWT is getting popular. In this answer, I will try to explain how to use JWT in the simplest and basic way that I can, so we won’t get lost … Read more
I work at Auth0 and I was involved in the design of the refresh token feature. It all depends on the type of application and here is our recommended approach. Web applications A good pattern is to refresh the token before it expires. Set the token expiration to one week and refresh the token every … Read more
JWTs can be either signed, encrypted or both. If a token is signed, but not encrypted, everyone can read its contents, but when you don’t know the private key, you can’t change it. Otherwise, the receiver will notice that the signature won’t match anymore. Answer to your comment: I’m not sure if I understand your … Read more