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Security Components

The application implements several layers of security: Transport Layer Security (TLS/SSL), End-to-end message encryption, Message integrity verification, Protection against common web vulnerabilities, Secure session management, Protection against replay attacks

Authentication Flow

  • Username/password validation
  • Session token generation
  • Authorization verification

Encryption Process

  • Key generation and exchange
  • Message encryption/decryption
  • MAC generation and verification

Data Storage

  • Encrypted message storage
  • Secure user credential storage
  • Session management

Technologies Used

  • Spring Boot 3.2.1
  • Spring Security
  • Spring WebSocket
  • Java Cryptography Extension (JCE)
  • H2 Database
  • Thymeleaf
  • SockJS and STOMP

Future Enhancements

Implementation of perfect forward secrecy, addition of file sharing capabilities, support for group chats with secure key distribution, integration with external authentication providers, enhanced audit logging and monitoring