ng-password-strength

Password strength checker wrapped in an angular directive Based on:

• http://blog.brunoscopelliti.com/angularjs-directive-to-test-the-strength-of-a-password
• http://www.passwordmeter.com

Examples

See app/index.html in the respository. [Live example] live-example

Usage

1. Bower should add ng-password-strength.min.js to you main file (index.html)

you can download this by:

• using bower and running bower install ng-password-strength
• downloading the production version or the development version.

In your web page:

<script src="ng-password-strength/dist/scripts/ng-password-strength.js"></script>
<script src="lodash/lodash.js"></script>

1. Bower should add ng-password-strength to your main file (index.html). Some of them are not automatically added so you'd better check them.

<script src="bower_components/angular/angular.js"></script>
<script src="bower_components/lodash/lodash.js"></script>
<script src="bower_components/ng-password-strength/dist/ng-password-strength.js"></script>

1. Set ng-password-strength as a dependency in your module

var myapp = angular.module('myapp', ['ngPasswordStrength'])

1. Add ng-password-strength directive to the wanted element, example:

<div ng-password-strength="pass"> .... </div>

• Accepted addtional params:

  • strength: value returned [0-100]

  • css-mode: 'foundation' or 'bootstrap'. Sets inner-class, inner-class-prefix, outter-class-prefix. No need to set one by one

  • inner-class: inner bar class (i.e. 'progress-bar')

  • inner-class-prefix: inner bar class prefix (i.e. 'progress-bar-' => 'progress-bar-success')

  • outter-class-prefix: root element class prefix (i.e. 'progress-bar-' => 'progress-bar-success')

  • calculation-mode: 'formula' (default) or 'entropy'. Formula is explained below

  • goal: only used in entropy mode. Fixes the amount to reach. Default: 96

Formula

Values limited to [0-100]

• Pros:

  • Number of Characters + n*4
  • Uppercase Letters (if any uppercase) + (len-n)*2
  • Lowercase Letters (if any lowercase) + (len-n)*2
  • Numbers (if any letter) + n*4
  • Symbols + n*6
  • Middle Numbers or Symbols + n*2
  • Requirements + n*2

• Cons:

  • Letters Only - n
  • Numbers Only - n
  • Repeat Characters (Case Insensitive) - (n/len) *10
  • Consecutive Uppercase Letters - n*2
  • Consecutive Lowercase Letters - n*2
  • Consecutive Numbers - n*2
  • Sequential Letters (3+) - n*3
  • Sequential Numbers (3+) - n*3
  • Sequential Symbols (3+) - n*3

TODO

Create tests

Changelog

v0.3.0

• formula calculation moved to factory
• added entropy calculation in a new factory
• template moved to detached html

v0.2.0

• added dependency: lodash
• removed dependencies: bootstrap, ng-lodash
• added classes for further customization
• added modes for faster customization: [foundation, bootstrap]

v0.1.0

• added dependency: ng-lodash
• removed dependencies: underscore.string
• changed compass to node-sass

v0.0.8

• lodash update

v0.0.7

• strength value feedback

v0.0.6

• change underscore to lodash

v0.0.1

• formula-based value calculations