ndum / laravel-seb

Laravel Package for generating encrypted SEB (Safe Exam Browser) exam configurations

laravel-seb

This Laravel-Package provides the possibility to generate encrypted SEB (Safe Exam Browser) configurations. its mainly used to generate automatic seb-exams configurations with secure defaults options.

Requirements

Laravel 8, 9 or 10 with php8 and enabled ext-openssl, ext-zlib

Limititations

Its can only be used for password-encrypted exams (client-configurations currently are not supported)

Installation

Install via Composer.

$ composer require ndum/laravel-seb

Examples

NOTE: For production - Please use secure passwords and a secure seb-config!

Parameters

$sebConfig = seb-config as json-array (show examples/example_seb_config.json)
$startPassword = encryption-password as string
$quitPassword = close-password as string
$adminPassword = admin-password as string

Traditionally:

use Ndum\Laravel\SebConfigGenerator;
use Storage;

$config = Storage::disk('local')->get('/examples/example_seb_config.json'); // just as example...
$startPassword = 'test';
$quitPassword = 'test';
$adminPassword = 'test';

$sebConfig = json_decode($config, true);

$generator = new SebConfigGenerator();
$encryptedSebConfig = $generator->createSebConfig($sebConfig, $startPassword, $quitPassword, $adminPassword);
dd($encryptedSebConfig);

Facade:

use Ndum\Laravel\Facades\SebConfigGenerator;
use Storage;

$config = Storage::disk('local')->get('/examples/example_seb_config.json'); // just as example...
$startPassword = 'test';
$quitPassword = 'test';
$adminPassword = 'test';

$sebConfig = json_decode($config, true);

$encryptedSebConfig = SebConfigGenerator::createSebConfig($sebConfig, $startPassword, $quitPassword, $adminPassword);
dd($encryptedSebConfig);

Issues / Contributions

Directly via GitHub

License

This project is licensed under the MIT License - see the LICENSE-File for details

laravel-seb's Issues

Best practice for .seb routes

Thank you for this package, I am curious how you implement the .seb files. The examples provided dd( the encryptedSebConfig. Any recommendations on how to generate the .seb file? Any specific header (e.g. X-SafeExamBrowser-RequestHash) used?

Value for key examKeySalt is NULL or doesn't have the correct class!

I've the following code in a controller, but when invoking the URL and SEB opens, it throws an error:

I've managed to store SEB logs and the error I've found in the los is the following:

2023/11/10 13:45:52:174 -[SEBConfigFileManager checkClassOfSettings:error:] Value for key examKeySalt is NULL or doesn't have the correct class!

public function sebConfig(Request $request, $attempt_id)
    {
        
        $path = storage_path('app/seb_config.json');
        $attempt = Attempt::findOrFail($attempt_id);
        $config = Storage::disk('local')->get('/seb_config.json'); // just as example...
        $startPassword = 'test';
        $quitPassword = 'test';
        $adminPassword = 'test';

        $sebConfig = json_decode($config, true);
        $sebConfig['startURL'] = url('/attempt/'.$attempt_id);
        
        //dd($sebConfig);
        $encryptedSebConfig = SebConfigGenerator::createSebConfig($sebConfig, $startPassword, $quitPassword, $adminPassword);
        //dd($encryptedSebConfig);
        // Enviar la configuración como respuesta 
        return response($encryptedSebConfig)->withHeaders([
            'Content-Type' => 'application/octet-stream',
            'Content-disposition' => 'attachment; filename=seb_config.seb'
          ]);
           
    }

The json template content is the same from the repo:
https://github.com/ndum/laravel-seb/blob/master/examples/example_seb_config.json