https://github.com/robertdurst/chatdemo
A demonstration of private communication on a public channel.
https://github.com/robertdurst/chatdemo
cryptography react socket-io wasm
Last synced: 3 months ago
JSON representation
A demonstration of private communication on a public channel.
- Host: GitHub
- URL: https://github.com/robertdurst/chatdemo
- Owner: robertDurst
- Created: 2018-08-18T23:37:58.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2019-07-29T21:05:36.000Z (over 6 years ago)
- Last Synced: 2025-06-09T18:05:18.634Z (8 months ago)
- Topics: cryptography, react, socket-io, wasm
- Language: Rust
- Homepage:
- Size: 865 KB
- Stars: 29
- Watchers: 1
- Forks: 4
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Chat Demo
A live demonstration of private communication on a public channel.
## How it Works
We utilize simple web sockets via [socket.io](http://socket.io/) to create a central chat room that broadcasts all messages to all members and [RSA](https://en.wikipedia.org/wiki/RSA_(cryptosystem)) for message encryption/decryption.
Before joining the chat room, the user generates a public key `[e,n]` and private key `[d,n]`. After generating the keys, the client *Registers* with the chat server by sending its public key which is broadcasted to all users.
Once the user has joined they can send unencrypted or encrypted messages. To send encrypted messages, they can click on a joined user's public key which will be filled into the *encrypt* field and write the message they want to encrypt in the *send* field. After clicking the encrypt button, their message will be encrypted and replace the plaintext in the *send* field.
Messages are filtered by each client. When a client receives a message with it's public key as the header, it will automatically decrypt the message and alert the user that a message was received.
## Prerequisites
* A recent version of node/npm (probably node 8+ should be fine)
* Nightly Rust (we use the latest and greatest)
## How to Use?
### Setup
```shell
git clone https://github.com/robertDurst/ChatDemo.git
cd ChatDemo
npm install
npm run build-debug // or npm run build-release
```
### Start Client
```shell
npm run client
```
### Start Server
```shell
npm run server
```
### Test
```shell
cargo test
```
## Cryptography Dependencies
The underlying crypto makes heavy use of the crates in [rust-num](https://github.com/rust-num), specifically [num-bigint](https://github.com/rust-num/num-bigint) and [num-trait](https://github.com/rust-num/num-trait) crates.
The randomness for the crypto uses the rust [rand](https://crates.io/crates/rand) crate.