Basic Authentication in ASP.NET Core Web API | Custom Handler & Role-Based Authorization

Learn how to implement Basic Authentication in ASP.NET Core Web API step-by-step using a clean, real-time, industry-standard approach.

In this video, we build Basic Authentication from scratch, implement a custom authentication handler, validate credentials securely, and add role-based authorization to control access like Administrator, Manager, and User roles.

This complete walkthrough covers authentication, authorization, password hashing, request validation, HTTP headers, claims, policies, and how ASP.NET Core processes authentication and authorization under the hood. Perfect for beginners, intermediates, and professionals building secure APIs in .NET 8 / ASP.NET Core Web API.

This session covers:
What Basic Authentication is and how it works internally
Why Base64 encoding is not encryption
Creating a custom Basic Authentication handler
Validating credentials securely using a database
Building Claims, ClaimsIdentity, and ClaimsPrincipal
Implementing role-based authorization using Basic Authentication
Handling 401 Unauthorized and 403 Forbidden properly
Understanding Authenticate, Challenge, and Forbid in ASP.NET Core
Securing API endpoints using [Authorize] and [AllowAnonymous]
Testing Basic Authentication using Postman

This video is ideal for:
ASP.NET Core beginners
Web API developers
Developers preparing for interviews
Anyone who wants a strong foundation in API security

⚠️ Note: Basic Authentication should always be used over HTTPS and is best suited for learning, internal tools, or controlled environments.

📌 Watch till the end to clearly understand Authentication vs Authorization in real-world APIs.

Full source code & written guide:
Authentication and Authorization in Web APIs: https://dotnettutorials.net/lesson/au...

Basic Authentication in ASP.NET Core Web API: https://dotnettutorials.net/lesson/ba...


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