copay/js/plugins/EncryptedInsightStorage.js

var cryptoUtil = require('../util/crypto');
var InsightStorage = require('./InsightStorage');
var inherits = require('inherits');

function EncryptedInsightStorage(config) {
  InsightStorage.apply(this, [config]);
}
inherits(EncryptedInsightStorage, InsightStorage);


EncryptedInsightStorage.prototype._brokenDecrypt = function(body) {
  var key = cryptoUtil.kdf(this.password + this.email, 'mjuBtGybi/4=', 100);
  log.debug('Trying legacy decrypt')
  var decryptedJson = cryptoUtil.decrypt(key, body);
  return decryptedJson;
};

EncryptedInsightStorage.prototype.getItem = function(name, callback) {
  InsightStorage.prototype.getItem.apply(this, [name,
    function(err, body) {
      if (err) {
        return callback(err);
      }
      var decryptedJson = cryptoUtil.decrypt(this.password, body);
      log.debug('Could not decrypt value using current decryption schema');

      if (!decryptedJson) {
        decryptedJson = this._brokenDecrypt(body);
      }

      if (!decryptedJson) {
        log.debug('Could not decrypt value.');
        return callback('PNOTFOUND');
      }
      return callback(null, decryptedJson);
    }
  ]);
};

EncryptedInsightStorage.prototype.setItem = function(name, value, callback) {
  var record = cryptoUtil.encrypt(this.password, value);
  InsightStorage.prototype.setItem.apply(this, [name, record, callback]);
};

EncryptedInsightStorage.prototype.removeItem = function(name, callback) {
  InsightStorage.prototype.removeItem.apply(this, [name, callback]);
};

module.exports = EncryptedInsightStorage;