ECIES encrypt/decrypt library for Ethereum
const ecies = require("eth-ecies");
let plaintext = new Buffer(`{foo:"bar",baz:42}`);
let encryptedMsg = ecies.encrypt(ethPubKey, plaintext);
// encrypted message is a 113+ byte buffer
const ecies = require("eth-ecies");
let plaintext = ecies.decrypt(ethPrivKey, encryptedMsg);
- To derive the public key from a private key, you can use
ethereumjs-util
module