ASP.NET Core Authentication Tutorials
Master the art of securing your web applications with robust authentication mechanisms in ASP.NET Core. This section provides comprehensive guides and step-by-step tutorials to help you implement various authentication strategies.
Getting Started with ASP.NET Core Identity
Learn how to use the built-in ASP.NET Core Identity system for user management, registration, login, and more.
Learn MoreImplementing JWT Bearer Authentication
Secure your APIs and SPAs using JSON Web Tokens (JWT) for stateless authentication. This guide covers token generation and validation.
Learn MoreIntegrating OAuth 2.0 and OpenID Connect
Enable users to log in with external providers like Google, Facebook, or Microsoft using OAuth 2.0 and OpenID Connect.
Learn MoreUnderstanding HTTP Basic Authentication
A fundamental approach to authentication, suitable for simple scenarios. This tutorial explains its implementation and limitations.
Learn MoreAuthorization Policies and Requirements
Go beyond simple role-based access control. Learn to define complex authorization policies with custom requirements.
Learn MoreImplementing Two-Factor Authentication (2FA)
Enhance security by adding a second layer of verification for user logins. This guide covers SMS and authenticator app integration.
Learn MoreKey Concepts in ASP.NET Core Authentication
Understanding the core components and principles of authentication is crucial for building secure applications. Here are some key concepts:
- Authentication vs. Authorization: Authentication verifies who a user is, while authorization determines what actions a user is allowed to perform.
- Claims: Key-value pairs that represent attributes of a user, such as their name, role, or ID.
- Authentication Schemes: Different methods used to authenticate users (e.g., cookies, JWT, OAuth).
- Authentication Middleware: Processes incoming requests and determines the authenticated user.
- Identity: A robust framework for managing users, passwords, claims, roles, and security tokens.
Example: Cookie Authentication Middleware
Here's a glimpse of how you might configure cookie authentication in your Startup.cs (or Program.cs in .NET 6+):
// In ConfigureServices method (Startup.cs)
services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
.AddCookie(options =>
{
options.LoginPath = "/Account/Login";
options.LogoutPath = "/Account/Logout";
options.AccessDeniedPath = "/Account/AccessDenied";
});
// In Configure method (Startup.cs)
app.UseAuthentication();
app.UseAuthorization();
This setup uses cookie-based authentication, commonly employed for traditional web applications.