SeQura Backend

Secure Real-Time Chat Application - Backend Service

This is the backend service for SeQura, built as part of the Advanced Programming Practices (APP) project. The backend handles authentication, real-time messaging via WebSocket, and secure data management.

---

📖 About

SeQura Backend is a Spring Boot application that provides a real-time chat platform with the following capabilities:

• Real-Time Communication: WebSocket-based instant messaging using STOMP protocol
• Secure Authentication: Phone-based OTP authentication with JWT token management
• End-to-End Encryption Ready: Framework for AES-256-GCM encryption
• Storage: MySQL database for users, messages, and chat sessions

---

🛠️ Tech Stack

Core Framework

• Spring Boot 3.2.0 - Main application framework
• Spring Security - Authentication and authorization
• Spring Data JPA - Database ORM and repository management
• Spring WebSocket - Real-time bidirectional communication

Database

• MySQL 8.0+ - Primary data storage
• Hibernate - ORM implementation

Security & Authentication

• JWT (JSON Web Tokens) - Stateless authentication with HS512 algorithm
• BCrypt - Password hashing (if implemented)
• OTP System - 6-digit one-time password generation

Real-Time Communication

• STOMP Protocol - Simple Text Oriented Messaging Protocol
• SockJS - WebSocket fallback support
• Message Broker - In-memory message queue

Build & Dependencies

• Maven - Project management and build tool
• Java 17 - Programming language
• Lombok - Code generation and boilerplate reduction

---

🚀 How to Run

1. Clone the Repository

git clone https://github.com/anish-9387/SeQura-backend.git
cd SeQura-backend

2. Install Dependencies

mvn clean install

This will download all required dependencies and build the project.

3. Run the Application

mvn spring-boot:run