This project is an example of using a client and server to facilitate transfers between different addresses. Since there is just a single server on the back-end handling transfers, this is clearly very centralized. We won't worry about distributed consensus for this project.
However, something that we would like to incoporate is Public Key Cryptography. By using Elliptic Curve Digital Signatures we can make it so the server only allows transfers that have been signed for by the person who owns the associated address.
For an overview of this project as well as getting started instructions, check out the following video:
https://www.loom.com/share/0d3c74890b8e44a5918c4cacb3f646c4
The client folder contains a react app using vite. To get started, follow these steps:
- Open up a terminal in the
/client
folder - Run
npm install
to install all the depedencies - Run
npm run dev
to start the application - Now you should be able to visit the app at http://127.0.0.1:5173/
The server folder contains a node.js server using express. To run the server, follow these steps:
- Open a terminal within the
/server
folder - Run
npm install
to install all the depedencies - Run
node index
to start the server
Server will generate number of wallets (default is 3) and assign random balance from 0 to 100. In real world, those private keys would be generated and kept outside of server, but for the simplicity we will make it this way.
In order to make a transfer you need to sign the data generated in client (based on transfer details), use the following command to sign:
node scripts/signMessage.js <message> <privateKey>
The application should connect to the default server port (3042) automatically!
Hint - Use nodemon instead of node
to automatically restart the server on any changes.