Spring Boot JWT Authentication System This repository implements a secure and extensible user authentication system using Spring Boot and JWT (JSON Web Token). It supports: Login authentication with credential validation JWT generation for access control Refresh token mechanism to renew access without re-login Token validation.

An ASP.NET Core Web API project with custom-built user authentication using JWT tokens and refresh tokens. Features include secure registration, login, role-based access control, and token renewal without relying on external auth frameworks.

Authentication-focused GraphQL API examples for a Weather App, demonstrating API Key, JWT, and OAuth2 (Firebase) integration using HotChocolate and layered architecture

🔐Employee Management System with Role-Based Access A secure ASP.NET Core Web API for employee management, featuring: 🔑JWT Authentication & Role-based Authorization 👥Multiple roles (Admin, User, HR, Manager, Intern) 🧾Login returns token, user roles & menu permissions 📄Clean architecture using Repository & DTO pattern