Quick question to validate custom authentication using Microsoft.AspNetCore.Identity

[dienomb]

Within my implementation of IAuthenticationProvider. I'm using Microsoft.AspNetCore.Identity to validate user and password.

And from what I know SignInManager and UserManager are registered as scope. But I agree that IAuthenticationProvider should be registered as Singleton as we don't need more than 1 instance of it.

So should I do: AddScoped<IAuthenticationProvider, CustomAuthenticationProvider>()

or what I think is a better solution, I will inject into CustomAuthenticationProvider, IServiceScopeFactory and do:

using (var scope = serviceScopeFactory.CreateScope()) { var signInManager = scope.ServiceProvider.GetService<SignInManager<ApplicationUser>>(); var userManager = scope.ServiceProvider.GetService<UserManager<ApplicationUser>>(); var findUser = await userManager.FindByNameAsync(user); var result = await signInManager.CheckPasswordSignInAsync(findUser, password, false); return result.Succeeded; }

Many thanks