node/test/pummel/test-crypto-dh-keys.js

// Copyright Joyent, Inc. and other Node contributors.
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'use strict';
const common = require('../common');
if (!common.hasCrypto)
  common.skip('node compiled without OpenSSL.');

const assert = require('assert');
const crypto = require('crypto');

[ 'modp1', 'modp2', 'modp5', 'modp14', 'modp15', 'modp16', 'modp17' ]
.forEach((name) => {
  // modp1 is 768 bits, FIPS requires >= 1024
  if (name === 'modp1' && common.hasFipsCrypto)
    return;
  const group1 = crypto.getDiffieHellman(name);
  const group2 = crypto.getDiffieHellman(name);
  group1.generateKeys();
  group2.generateKeys();
  const key1 = group1.computeSecret(group2.getPublicKey());
  const key2 = group2.computeSecret(group1.getPublicKey());
  assert.deepStrictEqual(key1, key2);
});