implementing Configuring JWT Authentication in ASP.NET Core 6 with Multiple Auth Schemes
I'm working on a project and hit a roadblock. I'm having trouble setting up JWT authentication in my ASP.NET Core 6 application where I need to support multiple authentication schemes. I want to use JWT for API access but also support cookie authentication for MVC views. I've configured the services like this: ```csharp public void ConfigureServices(IServiceCollection services) { services.AddAuthentication(options => { options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme; options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme; }) .AddJwtBearer(options => { options.TokenValidationParameters = new TokenValidationParameters { ValidateIssuer = true, ValidateAudience = true, ValidateLifetime = true, ValidateIssuerSigningKey = true, ValidIssuer = "myIssuer", ValidAudience = "myAudience", IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("mySecretKey")) }; }) .AddCookie(options => { options.LoginPath = "/Account/Login"; options.SlidingExpiration = true; }); } ``` However, when I try to access a protected API endpoint with the JWT token, I keep getting the behavior: `"Authentication failed because the token was malformed"`. I confirmed that the token is being passed in the Authorization header correctly. I also tried adding middleware in `Configure` to enable authentication: ```csharp public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseRouting(); app.UseAuthentication(); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); endpoints.MapRazorPages(); }); } ``` When I run the application, the JWT token appears to be valid, but I receive the malformed behavior every time. I even used the `jwt.io` debugger to verify that the token is correctly formatted. Could this be an scenario with the token signing key or the configuration? I've tried different configurations and am running out of ideas. Any suggestions on what I might be missing or how to troubleshoot this would be greatly appreciated!