all files / src/utils/ crypto.js

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/**
 * @file encrypt.js
 * @desc Encrypts and decrypts a string
 */
 
'use strict';
 
var crypto = require('crypto'),
   config = require(__dirname + '/../config'),
   logger = require(__dirname + '/../loggers/logger'),
   algorithm = 'aes-256-cbc';
 
//export namespace as `aesCrypto`
var aesCrypto = exports;
 
aesCrypto.encrypt = function (text, passPhrase) {
   var key = passPhrase || config.pnr_enforcement.bypass_cookie_secret;
   if (!key){
      throw 'No value set in ini file for bypass_cookie_secret';
   }
   var cipher = crypto.createCipher(algorithm, key);
   var crypted = cipher.update(text, 'utf8', 'base64');
   crypted += cipher.final('base64');
   return crypted;
};
 
aesCrypto.decrypt = function (text, passPhrase) {
   var key = passPhrase || config.pnr_enforcement.bypass_cookie_secret;
   if (!key){
      throw 'No value set in ini file for bypass_cookie_secret';
   }
   var decipher = crypto.createDecipher(algorithm, key);
   try {
      var dec = decipher.update(text, 'base64', 'utf8');
      dec += decipher.final('utf8');
      return dec;
   } catch (ex) {
      logger.warn('decryption failed for text - ' + text);
      return null;
   }
};