Laravel 4 - Duo Security

An example of how to implement two factor authentication using Duo Security and Laravel 4.

Once complete, a user will be asked for their username and password, which is authenticated by Laravel, then if successful, they will be shown a prompt by Duo Security which will require a second kind of authentication. If that is also authenticated, the user will be logged in by Laravel and redirected to the homepage.

There are therefore 3 stages:

• Laravel login page
• Duo Security login page
• Authenticated homepage

Notes

1. Duo Security is a service that offers a way to protect a site using two factor authentication. You can find their PHP code here which this example repo extends in a minor way.

2. Laravel is a PHP MVC framework. You can find it here.

I am not affiliated in any way to either.

Instructions

This repo is based on a fresh version of Laravel 4, so to recreate this implementation, i would recommend you start with the same from here and follow the steps listed below. This repo is a tutorial rather than a finished product to plug in.

Screenshots

1. Stage One 

2. Stage Two 

3. iOS Notification 

4. Stage Three 

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Steps

1. Sign up for a Duo Security account then create a new Web SDK integration. Note the following which you will require later

   • Integration key
   • Secret key
   • API hostname

2. Clone a new instance of Laravel

3. Run the following in Terminal composer install

4. Set up some kind of database (I used mySQL) and add the relevant credentials to app/config/database.php

5. Run the following artisan command to generate the migration for a Users table, which we will use to authenticate our user against - php artisan migrate:make create_users_table

6. Open app/database/migrations/<the date you ran the command>_create_users_table.php and add the code shown in the file of the same name from this repo which scaffolds a users table.

7. Run the following artisan command php artisan migrate

8. Open app/database/seeds/DatabaseSeeder.php and add the code shown in the file of the same name from this repo which prepares the file to add one user we can authenticate against

9. Run the following artisan command php artisan db:seed - If you check your DB now, there should be one user in the users table, with a username of [email protected], and a password of password (which has been helpfully hashed by Laravel)

10. Add a new folder at app/LaravelDuo and add the two files from this repo from the same location, Duo.php (available here) and LaravelDuo.php

11. Open app/LaravelDuo/LaravelDuo.php and add add the Intergration key IKEY, Secret Key SKEY and Host HOST values from your Duo Security account, and create an Application Key AKEY

12. Open composer.json and add app/LaravelDuo to the classmap list as shown in the composer.json of this repo

13. Run the following artisan command composer dumpautoload

14. Open app/routes.php, delete the standard routing for ('/') and add the following Route::controller('/', 'HomeController');. This will RESTfully route our various page requests through app/controllers/HomeController.php

15. Create app/views/layouts/master.blade.php and add the code shown in the file of the same name from this repo. This uses Laravel's Blade syntax and is the outer structure for every page.

16. Create app/views/pages/login.blade.php and app/views/pages/duologin.blade.php and copy the code show in the files of the same name from this repo. login.blade.php is the page shown initally in which we authenticate a user against the Users table of our database. duologin.blade.php is the page shown subsequently which allows authentication with Duo.

17. Create public/assets/css/style.css and add any styling you want, and app/assets/js/Duo-Web-v1.bundled.min.js (available here)

18. Open app/controllers/HomeController.php and add the code from file of the same name from this repo.

19. Open app/models/User.php and add the getIdFromEmail() static method from the file of the same name from this repo.

20. Browse to your webroot (in my case http://localhost:8888/LaravelDuo/public) and enter [email protected] in the email field and password in the password field.

21. Follow the Duo security instructions to authenticate using their service

22. Win