AuthService

AuthService is a lightweight authentication microservice built with .NET 9 using Minimal API and Clean Architecture principles. It provides JWT-based authentication endpoints that can be reused across multiple applications.

🔐 Features

• User login with JWT token generation
• Token validation and expiration handling
• Clean Architecture structure:
  • Domain
  • Application
  • Infra.Data
  • Infra.IoC
  • WebAPI
  • Tests
• Minimal API for fast and clean endpoint definitions
• Ready for integration with other services via HTTP

📦 Technologies

• .NET 9
• ASP.NET Core Minimal API
• JWT (JSON Web Token)
• Entity Framework Core
• Clean Architecture
• Swagger (OpenAPI)

🚀 Endpoints

Method	Route	Description
POST	/login	Authenticates user and returns JWT
GET	/validate	Validates a JWT token

🧠 About JWT

JWT (JSON Web Token) is a compact, URL-safe token format used for securely transmitting information between parties. It consists of three parts:

1. Header: Specifies the signing algorithm (e.g., HS256)
2. Payload: Contains claims (user ID, roles, etc.)
3. Signature: Verifies the token's integrity

Tokens are signed using a secret key and can be validated without storing session state on the server.

🛠 Setup

dotnet restore
dotnet build
dotnet run --project AuthService.WebAPI