ECC Addresses

addresses.js

const secureRandom = require('secure-random');
const ec = require('elliptic').ec;

const ecdsa = new ec('secp256k1');

function generateAddress() {
  const max = Buffer.from("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364140", 'hex');
  let isInvalid = true;
  let privateKey;
  while (isInvalid) {
    privateKey = secureRandom.randomBuffer(32);
    if (Buffer.compare(max, privateKey) === 1) {
      isInvalid = false;
    }
  }
  console.log('> Private key: ', privateKey.toString('hex'));

  const keys = ecdsa.keyFromPrivate(privateKey);

  const publicKey = keys.getPublic('hex');
  console.log('> Public key: ', publicKey);
  return {
    privateKey: privateKey.toString('hex'),
    publicKey,
  };
}

generateAddress();