sicksync/dist/crypt.js

Don’t accept the available as the preferable. Go extra mile with extra speed.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.CryptHelper = undefined;

var _crypto = require('crypto');

var _crypto2 = _interopRequireDefault(_crypto);

var _constants = require('../conf/constants');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

class CryptHelper {
  constructor(secret) {
    this.secret = secret;
  }

  _cryptHelper(text, isEncrypt) {
    const cryptMethod = isEncrypt ? 'createCipher' : 'createDecipher';
    const finalParam = isEncrypt ? 'hex' : 'utf8';
    const cipherArgs = isEncrypt ? [text, 'utf8', 'hex'] : [text, 'hex', 'utf8'];

    const cipher = _crypto2.default[cryptMethod](_constants.CRYPT_ALGO, this.secret);
    let result = cipher.update.apply(cipher, cipherArgs);
    result += cipher.final(finalParam);

    return result;
  }

  encrypt(text) {
    return this._cryptHelper(text, true);
  }

  decrypt(text) {
    return this._cryptHelper(text, false);
  }

  stringifyAndEncrypt(data, withEncryption) {
    const stringifiedData = JSON.stringify(data);

    if (withEncryption) {
      return this.encrypt(stringifiedData);
    } else {
      return stringifiedData;
    }
  }

  decryptAndParse(msg, withEncryption) {
    if (withEncryption) {
      msg = this.decrypt(msg);
    }
    return JSON.parse(msg);
  }
}

exports.CryptHelper = CryptHelper;
exports.default = CryptHelper;