adonis-framework/src/Hash/index.js

Adonis framework makes it easy for you to write webapps with less code

'use strict'

/**
 * adonis-framework
 *
 * (c) Harminder Virk <virk@adonisjs.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
*/

const bcrypt = require('bcryptjs')

/**
 * Create and verify hash values using Bcrypt as underlaying
 * algorithm.
 * @module Hash
 */
let Hash = exports = module.exports = {}

/**
 * hash a value with given number of rounds
 *
 * @method make
 * @param  {String} value - value to hash
 * @param  {Number} [rounds=10] - number of rounds to be used for creating hash
 *
 * @return {Promise}
 *
 * @public
 *
 * @example
 * yield Hash.make('somepassword')
 * yield Hash.make('somepassword', 5)
 */
Hash.make = function (value, rounds) {
  rounds = rounds || 10
  return new Promise(function (resolve, reject) {
    bcrypt.hash(value, rounds, function (error, hash) {
      if (error) {
        return reject(error)
      }
      resolve(hash)
    })
  })
}

/**
 * verifies a given value against hash value
 *
 * @method verify
 * @param  {String} value - Plain value
 * @param  {String} hash - Previously hashed value
 *
 * @return {Promise}
 *
 * @public
 *
 * @example
 * yield Hash.verify('plainpassword', 'hashpassword')
 */
Hash.verify = function (value, hash) {
  return new Promise(function (resolve, reject) {
    bcrypt.compare(value, hash, function (error, response) {
      if (error) {
        return reject(error)
      }
      resolve(response)
    })
  })
}