jacobwise

      var tests = 1000;
      var i = 0;
      var t0 = performance.now();
      while (i < tests) {
        functionOne()
        i++;
      }

      var t1 = performance.now();
      console.log("Call to test 1 took " + (t1 - t0) + " milliseconds.");

jacobwise

var decrypt = function (encrypted, method, secret, hmac) {
  var iv = new Buffer.from(encrypted.substr(0, 24), "base64").toString();
  var decryptor = crypto.createDecipheriv(method, secret, iv);
  return (
    decryptor.update(encrypted.substr(24), "base64", "utf8") +
    decryptor.final("utf8")
  );
};