x-key header

xkey.js

/**
 * Helper function to create an api key
 * @param  {String} data The string to encrypt
 * @return {String}      The sha256 hash result
 */
function createHmac (data) {

    const crypto = require('crypto');
    const hmac = crypto.createHmac('sha256', config.get('appSecret'));
    hmac.update(data);

    return hmac.digest('hex');

}

const data = createHmac(config.get('appId'));