V4TCH / EncryptedChatClient

Encrypted Chat Client

This is a small chat client I made for fun, and all chat messages are encrypted!

Requirements

Client:

I had to install cryptography library, it seems to be 32bit only... Running fine using Python3.5 and 3.6 pip install cryptography

Server and Gateway:

Should work 32bit/64bit on Python3.5+ (tested)

Setting up the server + gateway + client

Server:

1. Head over to server directory
2. Open config.ini
3. Change port to your desired port
4. Run the server script

Gateway:

1. Head over to gateway directory
2. Open config.ini
3. Change localport to the desired port for the gateway
4. Change serverport to the port your server is running
5. Change serverip to the ip of your server

Client:

1. Head over to client directory
2. Run key_generator.py
3. Copy its output
4. Open config.ini
5. Replace three bottom lines with what you just copied
6. Replace serverip to the ip of your gateway
7. Replace serverport to the port of your gateway
8. Replace username to whatever you want that to be

How does this whole chat client work?

Server:

The server simply receives messages and sends them to all connected clients without decrypting the message

Gateway:

The gateway simply relays messages it receives from clients to the server and relays the messages from the server to all its clients, never decrypts the messages

Client:

Sends off encrypted messages to gateway Receives encrypted messages from gateway, then decrypts them

Client -> Presses "Send Message"
Client -> Encrypts Message
Client -> Sends Message To Gateway
Gateway -> Receives Message
Gateway -> Sends Message To Server
Server -> Receives Message
Server -> Sends Message To All Connected Gateways
Gateways -> Receives Message
Gateways -> Sends Message To All Connected Clients
Clients -> Receives Message
Clients -> Decrypts Message
Clients -> Displays Message

Config.ini for client for test server

[Settings]
username=User
serverip=185.80.130.181
serverport=1337
encryptkeyone=5VsGhICbtuaHHyZL15swIJcI_Y-92_mD1A4CPIRlqZ0=
encryptkeytwo=4U0PuVWPkkj4nG8KhzTcbLBf6heiX6QOH6DGud4Vsz8=
encryptkeythree=69t_WLCzYwbgbnKRvLTQydeHBJIbzIZNVvn4BunLwZc=