JWT Token 🔑 + Refresh Token ♻️ in ASP.NET Core Web API 🚀 | Step-by-Step Tutorial 🧑💻
In this video, we will learn how to implement secure authentication in ASP.NET Core Web API using JWT (JSON Web Token) along with Refresh Tokens.
🔐 Token-based authentication is widely used in modern web applications to protect APIs. However, access tokens expire quickly — and that’s where Refresh Tokens come into play.
💡 In this tutorial, we also implement a *secure approach by storing the Refresh Token as a HASH in SQL Server (MSSQL)* instead of saving it as plain text. This helps improve security and prevents token misuse. We use the stored token hash to validate users and fetch user details safely.
📌 In this tutorial, you will learn:
What is JWT Authentication
Why Refresh Tokens are important
Difference between Access Token and Refresh Token
How to generate JWT Token in ASP.NET Core
How to implement Refresh Token mechanism
How to store Refresh Token HASH in SQL Server (MSSQL)
How to validate user using stored token hash
Secure API endpoints using authentication
Best practices for token storage and security
💻 Tech Stack:
ASP.NET Core Web API
C#
SQL Server (MSSQL)
Entity Framework Core
🚀 This video is perfect for:
.NET Developers
Beginners learning Web API security
Anyone preparing for interviews (JWT + Refresh Token is frequently asked!)
📂 Real-world implementation included with proper coding and explanation.
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#aspnetcore #webapi #jwt #refreshtoken #dotnet #csharp #mssql #authentication #softwaredevelopment