CODEWITHSUNDEEP
asp.net-corejwtopeniddict
noobProgrammer
noobProgrammer

Reputation: 2994

JWT token not validating on remote server , Unable to match 'kid' Errror

I am using asp.net core with openiddict , for authorization i am using jwtmiddleware

 app.UseJwtBearerAuthentication(new JwtBearerOptions
            {
                AutomaticAuthenticate = true,
                AutomaticChallenge = true,
               RequireHttpsMetadata = false,
               Authority= "http://localhost"
            });

but for some reason its throwing this error, any help will be appreciated.

info: Microsoft.AspNetCore.Authentication.JwtBearer.JwtBearerMiddleware[7] Bearer was not authenticated. Failure message: IDX10501: Signature validat ion failed. Unable to match 'kid': '7FG4SQ4TIATESTLI-ZDHTLRYPWIEDU_RA1FVG91D', token: '{"alg":"RS256","typ":"JWT","kid":"7FG4SQ4TIATESTLI-ZDHTLRYPWIEDU_RA1FVG9 1D"}.{"unique_name":"asd","email":"asd","AspNet.Identity.SecurityStamp":"eb93ee4 4-6dbf-41b8-b1d6-157e4aa23ea7","jti":"4f0f5395-e565-4489-8baf-6361d5c4cb94","usa ge":"access_token","confidential":true,"scope":["offline_access","profile","emai l","roles"],"sub":"9125d8c5-5739-4f46-8747-e3423a464969","azp":"firebaseApp","nb f":1466997962,"exp":1466999762,"iat":1466997962,"iss":"http://localhost:5000/"}' . warn: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1] Authorization failed for the request at filter 'Microsoft.AspNetCore.Mvc.A uthorization.AuthorizeFilter'. warn: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1] Authorization failed for the request at filter 'Microsoft.AspNetCore.Mvc.A uthorization.AuthorizeFilter'.

Upvotes: 3

Views: 3746

Answers (2)

Sauceman
Sauceman

Reputation: 177

If you are using a third party STS(not identityserver or Auth0 for example) then you can use a BackChannelHandler to make it easier to debug the http result from the middleware:

app.UseJwtBearerAuthentication(new JwtBearerOptions() {
    ...
    BackchannelHttpHandler = new BackChannelHandler()
    ...
}

Then

using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;

namespace Application.API.Utilities
{
    public class BackChannelHandler : HttpMessageHandler
    {
        protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
        {
            HttpClient client = new HttpClient(new HttpClientHandler(), disposeHandler: false);
            client.DefaultRequestHeaders.Add("Accept", "application/json");
            var res = await client.GetAsync(request.RequestUri);
            return res;
        }
    }   
}

In my case the default return type for the jwks and openid-configuration endpoints was text/html instead of application/json. By adding an Accept header when making the request from the custom handler everything works.

Upvotes: 2

Set
Set

Reputation: 49789

  1. Authority should contains the base address of your OIDC server. You should specify Authority URL with port (5000 in your case accordingly to "iss" claim in token info):

    Authority="http://localhost:5000"

  2. You may disable Authority validation by setting ValidateIssuerSigningKey = false. JwtBearerOptions contains property TokenValidationParameters, that aggregate settings about validations:

    app.UseJwtBearerAuthentication(new JwtBearerOptions
    {
        ...
        TokenValidationParameters = new TokenValidationParameters { ValidateIssuerSigningKey = false}
    }

Upvotes: 2

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