Secure Chat Application

Overview

This project is a Secure Chat Application developed as part of the coursework for the Information Systems Programming course in the 2023/2024 academic year. The main objective of this project is to create a chat system with secure message exchange using C# (Windows Forms and Console Application). The project consists of two modules: client and server.

Authors

• Maxim D.
• Ana G.
• Edo S.

Objectives

• Client Module (UI):

  • Send public key
  • Authenticate to the server with credentials
  • Send and receive messages
  • Ensure secure communications
  • Validate messages using digital signatures

• Server Module (No UI):

  • Accept client connections
  • Store client public keys
  • Authenticate registered users
  • Validate client signatures
  • Securely send and receive messages
  • Process message data securely

Key Features

• Client Module:

  • User Interface to perform secure message exchange.
  • Public key exchange for secure communication.
  • Authentication using credentials.
  • Secure message exchange with digital signatures.

• Server Module:

  • Multi-client support.
  • Public key management and user authentication.
  • Message validation and secure data processing.

Technologies

• Sockets TCP/IP in .NET
• Cryptographic Algorithms in .NET
• ProtocolSI