https://github.com/sjdonado/secure-p2p-real-time-chat

Real time P2P messaging app using ECDH (Curve 256) + AES GCM **Education only**
https://github.com/sjdonado/secure-p2p-real-time-chat

aes-gcm ecdh python3 real-time-chat

Last synced: 5 months ago
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Real time P2P messaging app using ECDH (Curve 256) + AES GCM **Education only**

• Host: GitHub
• URL: https://github.com/sjdonado/secure-p2p-real-time-chat
• Owner: sjdonado
• Created: 2021-09-23T14:31:26.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2021-09-23T17:14:00.000Z (about 4 years ago)
• Last Synced: 2025-05-10T09:54:30.040Z (5 months ago)
• Topics: aes-gcm, ecdh, python3, real-time-chat
• Language: Python
• Homepage:
• Size: 24.4 KB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          
Secure P2P messaging chat

===

## 1. Pre register protocol

Generate and store `pi_0`, `pi_1` and `c`

![image](https://user-images.githubusercontent.com/27580836/134527220-a926b40b-2340-4a62-bcac-de9a9070cb0a.png)

## 2. Client-Server secure connection

### Key exchange

![image](https://user-images.githubusercontent.com/27580836/134527601-9d273d1d-0cc2-4042-afc4-8d3667c42781.png)

![image](https://user-images.githubusercontent.com/27580836/134527698-6047a83e-1e50-464b-a73b-3dbd37e5e9a4.png)

### Communication

![image](https://user-images.githubusercontent.com/27580836/134527977-34c6b30f-f6a8-4f6c-ad00-603c7e5aa84b.png)

## 3. Client-Client secure connection

### Key exchange

![image](https://user-images.githubusercontent.com/27580836/134528081-57bbd54b-2eb8-4850-83f8-c3800d312806.png)

### Communication

Same as **2**: AES GCM using `k_ab`, `k_ba` and `N`

# Setup

### 1. Create virtual env

```bash

python3 -m venv env

```

### 2. Install dependencies

```bash

pip install -r requirements.txt

```

### 3. Pre register

```bash

./pre_register.py user_a root_server userapass

./pre_register.py user_b root_server userbpass

```

# How to run?

- To display help: `./client.py --help`

- To run in verbose mode: `./client.py --verbose`

- To exit write `exit` in all terminals

## Step by step

### 1. Open the server in a new terminal

```bash

./server.py

```

### 2. Open the client **B** in a new terminal

```bash

./client.py user_b 127.0.0.1:8001 --point-a user_a

```

### 3. Open the client **A** in a new terminal

```bash

./client.py user_a 127.0.0.1:8002 --point-b user_b

```

## Server interactive session

Run allowed commands: `ip_signup`, `get_ip`, `update_ip`, `update_pass`, `exit`

NOTE: make sure to be registered before or run `ip_signup`

```bash

./client.py user_a 127.0.0.1:8001 --server-interactive-session

```

# Demo

![Screen Recording 2021-09-23 at 9 52 25 AM](https://user-images.githubusercontent.com/27580836/134535042-2bcbca52-5846-48a1-9861-0aec7028be29.gif)