The https://jwt.io debugger works in both directions, you can inspect and verify tokens or create and sign tokens. When you first paste your token on the left side and then paste the secret or key into the field under ‘verify signature’ in the right column, the signature will be recreated and you should notice that … Read more
Do not store the token in localStorage, the token can be compromised using xss attack. I think the best solution will be to provide both access token and refresh token to the client on login action. save the access token in memory (e.g redux state) and the refresh token should be created on the server … Read more
So I was half-step close to the solution, the problem was that while creating const jwtClient = new google.auth.JWT(googleKey.client_email, null, googleKey.private_key, [‘https://www.googleapis.com/auth/gmail.send’], null); i did not mention the account to be impersonated. The correct initialization should be: const jwtClient = new google.auth.JWT(googleKey.client_email, null, googleKey.private_key, [‘https://www.googleapis.com/auth/gmail.send’], ‘user@domain.com’); To summarize, the correct steps are: Created a project … Read more
Your Base64 string is not valid. It must be padded with = characters to have a length that is a multiple of 4. In your case: “eyJlbWFp….MTM3fQ==”. With this padding, initWithBase64EncodedString decodes the Base64 string correctly.
You should be able to retrieve a claims like this within your controller var identity = HttpContext.User.Identity as ClaimsIdentity; if (identity != null) { IEnumerable<Claim> claims = identity.Claims; // or identity.FindFirst(“ClaimName”).Value; } If you wanted, you could write extension methods for the IPrincipal interface and retrieve claims using the code above, then retrieve them using … Read more
JWT (RFC7519) is just a compact way to safely transmit claims from an issuer to the audience over HTTP. JWT can be: signed (JWS – RFC7515) encrypted (JWE – RFC7516) signed then encrypted (this order is highly recommended). The whole JWS is the payload of the JWE encrypted then signed. It makes sense to encrypt … Read more
Here is a full working minimal sample with a controller. I hope you can check it using Postman or JavaScript call. appsettings.json, appsettings.Development.json. Add a section. Note, Key should be rather long and Issuer is an address of the service: … ,”Tokens”: { “Key”: “Rather_very_long_key”, “Issuer”: “http://localhost:56268/” } … !!! In real project, don’t keep … Read more
I like the XSRF Double Submit Cookies method which mentioned in the article that @pkid169 said, but there is one thing that article doesn’t tell you. You are still not protected against XSS because what the attacker can do is inject script that reads your CSRF cookie (which is not HttpOnly) and then make a … Read more
I’ve also been trying to find this. I’d say – try and ensure it’s below 7kb. Whilst JWT defines no upper limit in the spec (http://www.rfc-editor.org/rfc/rfc7519.txt) we do have some operational limits. As a JWT is included in a HTTP header, we’ve an upper limit (SO: Maximum on http header values) of 8K on the … Read more
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. What people often mean when asking this is “What are the benefits of using JWTs over using Server-side sessions“. With server-side sessions, you will either have to … Read more