bookshelf-secure-password

A Bookshelf.js plugin for securely handling passwords.

Features

• Securely store passwords in the database using BCrypt with ease.
• Minimal setup required: just install the module, and make a password_digest column in the database!
• Follows the latest security guidelines, using a BCrypt cost of 12
• Inspired by and similar to has_secure_password in Ruby on Rails.

Installation

yarn add bookshelf-secure-password

or

npm install bookshelf-secure-password --save

Usage

1. Enable the plugin in your Bookshelf setup

const bookshelf = require('bookshelf')(knex)
const securePassword = require('bookshelf-secure-password')

bookshelf.plugin(securePassword)

2. Add hasSecurePassword to the model(s) which require a secure password

const User = bookshelf.Model.extend({
  tableName: 'users',
  hasSecurePassword: true
})

By default, this will use the database column named password_digest. To use a different column, simply change true to be the column name. For example:

const User = bookshelf.Model.extend({
  tableName: 'users',
  hasSecurePassword: 'custom_password_digest_field'
})

3. Now, when you set a password and save the record, it will be hashed as password_digest:

user = new User({ password: 'testing' })
user.get('password') // => undefined
user.get('password_digest') // => undefined

user.save().then(function () {
  user.get('password') // => undefined
  user.get('password_digest') // => '$2a$12$SzUDit15feMdVCtfSzopc.0LuqeHlJInqq/1Ol8uxCC5QydHpVWFy'
})

4. To authenticate against the password, simply call the instance method authenticate, which returns a Promise resolving to the authenticated Model.

user.authenticate('some-password').then(function (user) {
  // do something with the authenticated user
}, function (err) {
  // invalid password.
  // `err` will be of type `PasswordMismatchError`, which extends the `Error` class
})

Example

const User = require('./models/User')

/**
 * Sign up a new user.
 *
 * @returns {Promise.<User>} A promise resolving to the newly registered User, or rejected with an error.
 */
function signUp (email, password) {
  let user = new User({ email: email, password: password })

  return user.save()
}

/**
 * Sign in with a given email, password combination
 *
 * @returns {Promise.<User>} A promise resolving to the authenticated User, or rejected with a `PasswordMismatchError`.
 */
function signIn (email, password) {
  return User.forge({ email: email })
    .fetch()
    .then(function (user) {
      return user.authenticate(password)
    })
}

Notes

• BCrypt requires that passwords are 72 characters maximum (it ignores characters after 72).
• This library enables the built-in virtuals plugin on Bookshelf for the virtual password field.
• Passing a null value to the password will clear the password_digest.
• Passing undefined or a zero-length string to the password will leave the password_digest as-is

Testing

To run the tests locally, simply run yarn test or npm test