In ASP.NET Core 8 (assuming you meant .NET 6 or a future version), you can validate multiple tokens with different providers in your API. Here’s a general approach you can take:
1. Configure Authentication Schemes:
Configure multiple authentication schemes in your `Startup.cs` file. Each authentication scheme corresponds to a different token provider.
public void ConfigureServices(IServiceCollection services)
{
// Add authentication services
services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer("Provider1", options =>
{
options.Authority = "https://provider1.com";
options.Audience = "api1";
})
.AddJwtBearer("Provider2", options =>
{
options.Authority = "https://provider2.com";
options.Audience = "api2";
});
services.AddControllers();
}
2. Apply Authentication Schemes to Endpoints:
Apply the appropriate authentication scheme to each endpoint or controller action where you want to validate tokens from a specific provider.
[Authorize(AuthenticationSchemes = "Provider1")]
[ApiController]
[Route("api/[controller]")]
public class Provider1Controller : ControllerBase
{
// Controller actions
}
[Authorize(AuthenticationSchemes = "Provider2")]
[ApiController]
[Route("api/[controller]")]
public class Provider2Controller : ControllerBase
{
// Controller actions
}
3. Handle Authentication and Authorization:
In each controller or endpoint, the `Authorize` attribute specifies the authentication scheme to use for validating tokens. When a request is made to an endpoint, ASP.NET Core will automatically validate the token based on the configured authentication scheme.
4. Access Claims and User Information:
Once the token is validated, you can access the user’s claims and information within your controller actions using `User.Identity`.
public IActionResult Get()
{
var userId = User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
var userEmail = User.FindFirst(ClaimTypes.Email)?.Value;
// Process the request based on user information
return Ok(new { UserId = userId, Email = userEmail });
}
By configuring multiple authentication schemes and applying them to the appropriate endpoints, you can validate tokens from different providers in your ASP.NET Core API. This allows you to support authentication and authorization for various clients and services using different token formats or providers.