index.js

var crypto = require('crypto');

//getDiffieHellman
exports.DiffieHellmanGroup = crypto.DiffieHellmanGroup;
exports.createDiffieHellmanGroup = crypto.createDiffieHellmanGroup;
exports.getDiffieHellman = crypto.getDiffieHellman;

//createDiffieHellman
exports.createDiffieHellman = crypto.createDiffieHellman;
exports.DiffieHellman = crypto.DiffieHellman;