Encrypting & Decrypting data with web3 on ETH

main.js

data = "";
privateKey = "";
rpcEndpoint = "";
password = "";

const Web3 = require("web3");
const provider = new Web3.providers.HttpProvider(rpcEndpoint);
const web3 = new Web3(provider);

async function main() {
  // A signed message using your private key
  signedMessage = await web3.eth.accounts.sign(data, privateKey);
  console.log(signedMessage);

  // Encrypting an account with a password
  keystoreJsonV3 = await web3.eth.accounts.encrypt(privateKey, password);
  console.log(keystoreJsonV3);

  // Decrypting an account with a password
  myAccount = web3.eth.accounts.decrypt(keystoreJsonV3, password);
  console.log(myAccount);
}
main();