文件列表:

backend/
build/start_server/
dist/start_server/
frontend-admin/
frontend-user/
project-planning/
Instructions.txt
start_server.spec

# Secure Chat App ## Table of Contents - [Description](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#description) - [Technologies](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#technologies) - [Key Features](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#key-features) - [Project Planning](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#project-planning) - [Contributors](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#contributors) - [Instructions](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/#instructions) ## Description This secure chat app utilizes a combination of technologies such as React Native, Node.js, and Python, providing features like real-time chat, AES encryption, and group chat functionalities. Developed with contributions from Aidan Froggatt, Rosa Chen, Kyle McMaster, and Daniel Franze-Da Silva, the app offers a robust and encrypted communication platform with advanced features like Kerberos Authentication Protocol and Key Distribution Center integration. ## Technologies        ## Key Features - ### Kerberos Authentication Protocol The Kerberos Authentication Protocol is used to authenticate users before they can send messages. The protocol uses a Ticket Granting Server to issue tickets to users, which are then used to authenticate the user to the Key Distribution Center. - ### AES Encryption The application uses the Advanced Encryption Standard (AES) to encrypt and decrypt messages between users. The AES algorithm is a symmetric key encryption algorithm that is used to secure the messages sent between users. - ### Key Distribution Center The Key Distribution Center is responsible for generating and distributing symmetric keys to users. The keys are used to encrypt and decrypt messages between users. - ### Real-Time Chat The application allows users to send and receive messages in real-time. Users can send messages to other users and view the messages they have received. - ### Chat History Log The application stores a history of messages sent and received by users. Users can view their chat history and see the messages they have sent and received. - ### Group Chat The application allows users to create and join group chats. Users can send messages to multiple users in a group chat and view the messages sent by other users in the group. --- ## Project Planning All project planning documents can be found in the project planning directory --- ## Instructions ### Running the App (Frontend) for User Account #### Setup - NOTE: This app is designed to be run on a mobile device - IMPORTANT! The backend server must be running before the app is started - IMPORTANT! Update the server_url in the .env environment variables file to the IP address of the backend server - Install [Node.js](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/https://nodejs.org/en/) - Install Expo Go on mobile phone #### Usage - Clone the reposit ry - Run `npm install` in the \frontend-user directory - Run `npx expo start` in the \frontend-user directory - Scan the QR code with Expo Go (Android) or the Camera app (iOS) ### Running the Server (Backend) of the App #### From EXE Run `start_server.exe` Obtain IP and port printed by program to include in front end .env Ensure listed port is open on machine firewall #### from source Run `python3 backend/start_server.py` from project root Obtain IP and port printed by program to include in front end .env Ensure listed port is open on machine firewall - View backend for instructions on how to run the backend server. - View frontend-user for instructions on how to run the user frontend. - View frontend-admin for instructions on how to run the admin frontend. --- ## Corresponding Files For each Feature ### Key Distribution Center #### In the backend folder * headers\KeyDistributionManager.py * src\AESKeyDistributionCenter.py * headers\KeyGenerator.py * src\AESKeyGenerator.py * headers\KeyStorage.py * src\KeyStorageFirebase.py ### Mediated Authentication Protocol #### In the backend folder * headers\AuthenticationManager.py * src\KerberosAuthServer.py * src\KerberosServerAuthManager.py * src\KerberosTicketServer.py #### In the frontend-user * screens\UserLoginScreen.jsx ### Symmetric Key Crypto-System #### In the backend folder * headers\EncryptionFunction.py * src\AESEncryptionFunction.py * src\FernetEncryptionFunction.py * src\NoneEncryptor.py * headers\EncryptionKey.py * headers\Serializer.py * src\PythonSerializer.py * src\JSONSerializer.py ### Chat History Log #### In the backend folder * headers\MessageDatabase.py * src\FirebaseMessageDatabase.py #### In the frontend-user folder * screens\ChatScreen.jsx --- ## Contributors - ### [Aidan Froggatt](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/https://github.com/aidanfroggatt) - ### [Rosa Chen](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/https://github.com/rosachen3) - ### [Kyle McMaster](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/https://github.com/KyleJMcMaster) - ### [Daniel Franze-Da Silva](https://github.com/SE3A04-Project-Team/secure-chat-app/blob/master/https://github.com/DanielFD04)

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