Benchmarks for HKDF

abc.sh

$ node -v
v5.5.0
$ node benchmark.js
HKDF test x 488 ops/sec ±0.81% (82 runs sampled)
Fastest is HKDF test
$ jx -jxv
v0.3.1.1
$ jx benchmark.js
HKDF test x 823 ops/sec ±0.40% (87 runs sampled)
Fastest is HKDF test

benchmark.js

'use strict';

var Benchmark = require('benchmark');
var crypto = require('crypto');
var HKDF = require('./NextGeneration/hkdf');

var suite = new Benchmark.Suite();

// add tests
suite.add('HKDF test', function() {
  var pubKey = crypto.createECDH('secp256k1').generateKeys();
  var expirationBuffer = crypto.randomBytes(8);
  var sxy = crypto.createECDH('secp256k1');
  sxy.generateKeys();
  sxy = sxy.computeSecret(pubKey);
  HKDF('sha256', sxy, expirationBuffer).derive('', 32);
})
// add listeners
.on('cycle', function(event) {
  console.log(String(event.target));
})
.on('complete', function() {
  console.log('Fastest is ' + this.filter('fastest').map('name'));
})
// run async
.run({ 'async': true });