ASP.Net Core Authentication and Authorization Basics

In this article, we will discuss the ASP.Net Core Authentication and Authorization Basics in .Net Core 6.0.

Table of Contents

Prerequisites

Download and install .Net Core 6.0 SDK from here
Download and Install Microsoft Visual Studio 2022 from here

Previous Article you can also check Create ASP.Net Core Web API

Create ASP.NET Core Web App

Open visual studio and click the Create New Project Option
Select the Blank Template

Enter the name of the Project

Select Framework and Click on Create

Create Controller

Create the Home Controller

using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Security.Claims;

namespace App_Auth_Authorization.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index()
        {
            return View();
        }

        [Authorize]
        public IActionResult Employee()
        {
            return View();
        }
 public async Task<IActionResult> Authenticate()
        {
            var Auth_Claims = new List<Claim>
            {
                new Claim(ClaimTypes.Name,"labpys.com"),
                new Claim(ClaimTypes.Name,"Example@labpys.com"),               

            };

            var license = new List<Claim>() {

                new Claim(ClaimTypes.Name, "Admin"),
                new Claim("UniqueIdentity", "B+"),

            };


            var AuthIdenity = new ClaimsIdentity(Auth_Claims, "Auth_Tutorial");
            var LicenseIdentity = new ClaimsIdentity(license, "Auth_Tutorial");
            var userPrincipal = new ClaimsPrincipal( new[] { AuthIdenity, LicenseIdentity });
            await HttpContext.SignInAsync(userPrincipal);

            return Redirect(nameof(Index));
        }

        
    }
}

Authorization – To make ASP.NET Core Authorized Attribute work, you must include the relevant middleware in program class.

var builder = WebApplication.CreateBuilder(args);

var services = builder.Services;    

services.AddControllersWithViews();

services.AddAuthentication("CookieAuth")
    .AddCookie("CookieAuth", config =>
    {
        config.Cookie.Name = "Auth_Tutorial";
        config.LoginPath = "/Home/Authenticate";

    });
services.AddMvc();

var app = builder.Build();

app.UseAuthentication();
app.UseRouting();
app.UseAuthorization();


app.UseEndpoints(endpoints =>
{
    endpoints.MapDefaultControllerRoute();
});
app.Run();

Customize View

Index.cshtml

 
@{
}

<h1>Layout Page</h1>

Employee.cshtml

 
@{
}

<h1>Employee Detail</h1>