In the Ethereum context, signing a message allows us to verify that a piece of data was signed by a specific account, in other terms, it's a way to prove to a smart contract/human that an account approved a message. Signing a message with a private or public key does not require interacting with the Ethereum network.
| package | explain |
|---|---|
| React.js | For building frontend |
| web3.js | Web3 client (Frontend Next.js). |
| node.js | For building API's. |
| express.js | back end web application framework. |
| Mngodb | For saving nonce & user details. |
| hardhat | Ethereum development environment. |
| JWT | For generate JSON Web Token |
| ethereumjs-util | For verify sign message signature |
Backend
1) cd server
2) npm i
3) npm start
Frontend
1) cd client
2) npm i
3) npm start