Professional JWT Authentication System API built with ASP.NET Core 8 Web API.

This project provides a complete backend authentication solution for modern applications using JSON Web Tokens (JWT). It includes secure user registration, login functionality, and protected API endpoints using JWT Bearer authentication.

The system is built with clean architecture practices and uses Entity Framework Core with SQL Server for reliable database management.

This project is ideal for developers who need a ready-to-use authentication system that can be easily integrated into web applications, mobile apps, or frontend frameworks.

Main Features:

• Secure User Registration
• User Login with JWT Token Generation
• JWT Bearer Authentication
• Secure Password Hashing
• Protected API Endpoints
• SQL Server Database Integration
• Entity Framework Core (Code First)
• Swagger API Documentation

Technologies Used:

ASP.NET Core 8 Web API
C#
SQL Server
Entity Framework Core
JWT Authentication
Swagger / OpenAPI

The project is well structured, easy to install, and includes clear documentation for quick setup.

JWT Authentication
User Registration API
User Login API
Token Generation
Password Hashing
Protected API Endpoints
ASP.NET Core 8 Web API
SQL Server Integration
Entity Framework Core
Swagger Documentation
Clean Architecture
Production Ready API

.NET 8 SDK
SQL Server
Visual Studio 2022 or later
Basic knowledge of ASP.NET Core

1. Download and extract the project files.

2. Open the solution file in Visual Studio.

3. Configure the database connection in appsettings.json.

Example connection string:

"ConnectionStrings": {
"DefaultConnection": "Server=.;Database=AuthSystemDB;Trusted_Connection=True;TrustServerCertificate=True;"
}

4. Create the database.

Option 1:
Run the provided SQL script file:
database_setup.sql

Option 2:
Run the following command:

dotnet ef database update

5. Run the project using:

dotnet run

6. Open Swagger in your browser:

http://localhost:5000/swagger

From Swagger you can test registration, login, and protected endpoints.