tls.rs : Secure TCP Client-Server in Rust

This repository contains a simple implementation of a secure TCP client-server application in Rust. The communication between the client and the server is secured using SSL/TLS with public/private key configuration. The server sends data to the client in real-time, and the client prints this data as it is received.

Features

• Asynchronous TCP communication using tokio.
• SSL/TLS encryption using native-tls and tokio-native-tls.
• Public/private key authentication.
• Real-time data transmission from server to client.

Requirements

• Rust (latest stable version)
• OpenSSL (for generating certificates)

Setup

Generate Certificates

To run the server and client, you need to generate the necessary certificates and keys. You can use OpenSSL to generate these files.

1. Generate a private key:

   openssl genrsa -out key.pem 2048

2. Generate a certificate signing request (CSR):

   openssl req -new -key key.pem -out cert.csr

3. Generate a self-signed certificate:

   openssl x509 -req -days 365 -in cert.csr -signkey key.pem -out cert.pem

4. Convert the key and certificate to PKCS#12 format:

   openssl pkcs12 -export -out identity.pfx -inkey key.pem -in cert.pem

   Use password when prompted for an export password.

Running the Server

1. Navigate to the server directory:

   cd server

2. Ensure you have the required dependencies:

   cargo build --release

3. Run the server:

   cargo run --release

Running the Client

1. Navigate to the client directory:

   cd client

2. Ensure you have the required dependencies:

   cargo build --release

3. Run the client:

   cargo run --release

Project Structure

tls.rs
├── certs
│   ├── cert.csr
│   ├── cert.pem
│   ├── identity.pfx
│   └── key.pem
├── client
│   ├── Cargo.lock
│   ├── Cargo.toml
│   └── src
│       └── main.rs
├── README.md
└── server
    ├── Cargo.lock
    ├── Cargo.toml
    └── src
        └── main.rs

• certs/: Directory containing the certificate and key files.
• client/: Directory containing the client implementation.
  • Cargo.toml: Client dependencies.
  • src/main.rs: Main client implementation.
• server/: Directory containing the server implementation.
  • Cargo.toml: Server dependencies.
  • src/main.rs: Main server implementation.
• README.md: This readme file.