Policy based authorization gives InvalidOperationException-CodePudding

I have to add policy based authentication to my .net 6 webapp. I added

builder.Services.AddAuthorization(options =>
{
     options.AddPolicy(Constants.Policies.RequireGlobalAdminRole, policy => policy.RequireRole(Constants.Roles.GlobalAdmin));
 });

to the program.cs file and in the dashboard controller I have decorated

 [Authorize(Policy = Constants.Policies.RequireGlobalAdminRole)]

In the after login, I created the claim for the role

                 var claims = new List<Claim>
                    {
                        new Claim(ClaimTypes.Role,Data.User.Role.RoleName)
                    };
                    var Identity=new ClaimsIdentity(claims);
                    ClaimsPrincipal claimsPrincipal=new ClaimsPrincipal(Identity);.

But after successfull login, this error occurs.

InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action configureOptions).

CodePudding user response：

You need to define an authentication scheme. For example (if you are using OIDC):

builder.Services.AddAuthentication(options =>
{
   options.DefaultScheme = "WebAuthScheme";
   options.DefaultChallengeScheme = "oidc";
})

Take a look at

Finally, add the policy to the home controller：

[Authorize(Policy = "mypolicy")]
public class HomeController : Controller {}