eth-crypto/dist/es/recover.js

Cryptographic functions for ethereum and how to use them with web3 and solidity

import { recoverPublicKey } from './recover-public-key';
import { toAddress as addressByPublicKey } from './public-key';

/**
 * returns the address with which the messageHash was signed
 * @param  {string} sigString
 * @param  {string} hash
 * @return {string} address
 */
export function recover(sigString, hash) {
  var pubkey = recoverPublicKey(sigString, hash);
  var address = addressByPublicKey(pubkey);
  return address;
}