JWT tokens contain claims, which are statements about the subject (for example the logged in user). These statements can be things like name, email, roles etc. JWT tokens are digitally signed and not vulnerable to CSRF attacks. These two characteristics make sure that the service receiving the token does not need to go back to … Read more
there is no standard for how to return JWT token to the client, however, check this URL, it answers your question https://github.com/dwyl/hapi-auth-jwt2/issues/82#issuecomment-129873082 putting the JWT token in the Authorization header gives us flexibility to send an actual response in a web application. For a REST-only App/API you are free to send the JWT as the … Read more
It turns out that the KeySize for X509SecurityKey needs to be at least 1024 in length for verifying. This is not obvious from the exception, since it is hidden with the [PII is hidden] filter. Adding the following line made the exception text a lot more useful (add to ConfigureServices method in Startup.cs): IdentityModelEventSource.ShowPII = … Read more
The library PyJWT has an option to decode a JWT without verification: Without this option, the decode function does not only decode the token but also verifies the signature and you would have to provide the matching key. And that’s of course the recommended way. But if you, for whatever reason, just want to decode … Read more
A little late to the party, but I ran into the same issue trying to follow the standalone docs and what it doesn’t cover is the need to import the options InjectionToken which is referenced in the constructor of the service: import { JwtHelperService, JWT_OPTIONS } from ‘@auth0/angular-jwt’; … providers: [ { provide: JWT_OPTIONS, useValue: … Read more
There are many benefits to using JWT tokens regardless of the platform. JWT tokens base64 encode all the users claims in their body and can be safely decoded on the client into a stateful object. This is hugely beneficial when compared to alternative opaque tokens which provide zero use to the client app. On login, … Read more
in your claims (second code snippet) I can only see this: new Claim(ClaimTypes.NameIdentifier, applicationUser.UserName), but you need to add this: new Claim(ClaimTypes.Name, applicationUser.UserName), then User.Identity.Name should contain the username.
TL;DR You must verify the signature of JWS in the server always. Client-side signature verification doesn’t gives much, unless you have a specific case where it makes sense don’t do it. You don’t need to verify the signature of a JWS token to check expiration in the client. (unless you were encrypting the claims, aka … Read more
You must use the same key to validate the token as the one you use to generate it. Also you need to disable some validations such as expiration, issuer and audiance, because the token you generate doesn’t have these information (or you can add these information). Here’s a working example: class Program { static string … Read more