Keycloak.AuthServices.Authentication 1.0.2

Keycloak.AuthServices

Easy Authentication and Authorization with Keycloak in .NET and ASP.NET Core.

Package	Version	Description
Keycloak.AuthServices.Authentication		Keycloak Authentication JWT + OICD
Keycloak.AuthServices.Authorization		Authorization Services. Use Keycloak as authorization server
Keycloak.AuthServices.Sdk		HTTP API integration with Keycloak

Example

Demonstrates how to add JWT-based authentication and custom authorization policy.

var builder = WebApplication.CreateBuilder(args);

var host = builder.Host;
var configuration = builder.Configuration;
var services = builder.Services;

host.ConfigureKeycloakConfigurationSource();
// conventional registration from keycloak.json
services.AddKeycloakAuthentication(configuration);

services.AddAuthorization(options =>
    {
        options.AddPolicy("RequireWorkspaces", builder =>
        {
            builder.RequireProtectedResource("workspaces", "workspaces:read") // HTTP request to Keycloak to check protected resource
                .RequireRealmRoles("User") // Realm role is fetched from token
                .RequireResourceRoles("Admin"); // Resource/Client role is fetched from token
        });
    })
    .AddKeycloakAuthorization(configuration);

var app = builder.Build();

app.UseAuthentication()
    .UseAuthorization();

app.MapGet("/workspaces", () => "[]")
    .RequireAuthorization("RequireWorkspaces");

app.Run();

Keycloak.AuthServices.Authentication

Keycloak.AuthServices.Authentication

Add OpenID Connect + JWT Bearer token authentication.

// add configuration from keycloak file
host.ConfigureKeycloakConfigurationSource("keycloak.json");
// add authentication services, OICD JwtBearerDefaults.AuthenticationScheme
services.AddKeycloakAuthentication(configuration, o =>
{
    o.RequireHttpsMetadata = false;
});

Client roles are automatically transformed into user role claims KeycloakRolesClaimsTransformation.

See Keycloak.AuthServices.Authentication - README.md

Keycloak installation file:

// confidential client
{
  "realm": "<realm>",
  "auth-server-url": "http://localhost:8088/auth/",
  "ssl-required": "external", // external | none
  "resource": "<clientId>",
  "verify-token-audience": true,
  "credentials": {
    "secret": ""
  }
}
// public client
{
  "realm": "<realm>",
  "auth-server-url": "http://localhost:8088/auth/",
  "ssl-required": "external",
  "resource": "<clientId>",
  "public-client": true,
  "confidential-port": 0
}

Keycloak.AuthServices.Authorization

Keycloak.AuthServices.Authorization

services.AddAuthorization(authOptions =>
{
    authOptions.AddPolicy("<policyName>", policyBuilder =>
    {
        // configure policies here
    });
}).AddKeycloakAuthorization(configuration);

See Keycloak.AuthServices.Authorization - README.md

Keycloak.AuthServices.Sdk

Keycloak.AuthServices.Sdk

Keycloak API clients.

// requires confidential client
services.AddKeycloakAdminHttpClient(keycloakOptions);

// based on token forwarding HttpClient middleware and IHttpContextAccessor
services.AddKeycloakProtectionHttpClient(keycloakOptions);

See Keycloak.AuthServices.Sdk - README.md

Build and Development

dotnet cake --target build

dotnet pack -o ./Artefacts

Reference

• https://github.com/thinktecture-labs/webinar-keycloak
• https://github.com/thinktecture-labs/webinar-keycloak-authorization
• https://github.com/elmankross/Jboss.AspNetCore.Authentication.Keycloak/
• https://github.com/mikemir/AspNetCore.KeycloakAuthentication/
• https://github.com/lvermeulen/Keycloak.Net
• https://github.com/keycloak/keycloak-documentation/blob/main/authorization_services/topics/service-authorization-uma-authz-process.adoc
• https://www.keycloak.org/docs/latest/authorization_services/index.html