Encrypted CLI Chat

A secure, encrypted chat application written in Go that guarantees end-to-end encryption between two users. It runs in the command line with colored output to distinguish between your messages and your peer's messages.

Project Structure

encrypted-chat/
├── cmd
│   ├── server.go      # TCP server that relays encrypted messages
│   └── client.go      # CLI client that encrypts and decrypts messages
├── go.mod             # Go module file
└── README.md          # This file

Requirements

• Go 1.20 or later

How to Run

1. Start the Server:

   Open a terminal and run:

   go run cmd/server.go

   The server listens on port 9000.

Start the Clients:

Open two separate terminals (for two users) and run:

go run cmd/client.go <server-ip>:9000

Replace <server-ip> with:

• localhost if both server and client are on the same machine,
• your local IP (e.g., 192.168.1.100) if the server is running on your local network,
• your public IP if you want to chat over the internet (requires setting up port forwarding on your router).

3. Chat:

   Enter the same passphrase in both clients to enable secure communication. Then, type your messages and enjoy the chat!