A bundle to handle encoding and decoding of parameters using OpenSSL and Doctrine lifecycle events.

Features include:

• Written for Symfony verison 3.x.x
• Uses OpenSSL
• Uses Lifecycle events

Warning

• This bundle has not been unit tested.
• It has only been running on a Symfony2 v3.0.1 project, and not backward compatibility tested.

Features road map:

• Create a factory method to expand for different encryptors
• Create a twig function to decrypt encoded values
• Expand parameters to allow selection of encoding method
• Create CLI commands to encrypt and decrypt the entire database
• Handle DateTime data types via the bundle.

This bundle is under the MIT license. See the complete license in the bundle:

Resources/meta/LICENSE

EncryptBundle has been written for the SpecShaper and Parolla websites to encode users private data. The bundle will be expanded as part of a larger EU GDPR data management bundle.

Issues and feature requests are tracked in the Github issue tracker.

When reporting a bug, it may be a good idea to reproduce it in a basic project built using the Symfony Standard Edition to allow developers of the bundle to reproduce the issue by simply cloning it and following some steps.

Open a command console, enter your project directory and execute the following command to download the latest version of this bundle:

$ composer require specshaper/encrypt-bundle dev-master

This command requires you to have Composer installed globally, as explained in the installation chapter of the Composer documentation.

Then, enable the bundle by adding it to the list of registered bundles in the app/AppKernel.php file of your project:

<?php
// app/AppKernel.php

// ...
class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = array(
            // ...
            new SpecShaper\EncryptBundle\SpecShaperEncryptBundle(),
        );
        // ...
    }
    // ...
}

Generate a 256 bit key using the command provided in the bundle.

$ bin/console encrypt:genkey

Copy the key into your parameters file.

// app/config/parameters.yml

    ...
    encrypt_key: <your_key_here>
    

A config file entry is not required, however there are some options that can be configured to extend the bundle.

// app/config/config.yml

    ...
    spec_shaper_encrypt:
        is_disabled: false
        subscriber_class: 'AppBundle\Subscribers\OtherSubscriber'
        annotation_classes:
            - 'SpecShaper\EncryptBundle\Annotations\Encrypted'
            - 'AppBundle\Annotations\CustomAnnotation'

You can disable encryption by setting the 'is_disabled' option to true. Decryption still continues if any values contain the <ENC> suffix.

You can extend the EnryptBundle default Subscriber and override its methods. Use the 'subscriber_class' option to point the bundle at your custom subscriber.

If you want to define your own annotation, then this can be used to trigger encryption by adding the annotation class name to the 'annotation_classes' option array.

Add the Annotation entity to the declared classes in the entity.

<?php
...
use SpecShaper\EncryptBundle\Annotations\Encrypted;

Add the annotation '@Encrypted' to the parameters that you want encrypted.

<?php

    /**
     * A PPS number is always 7 numbers followed by either one or two letters.
     * 
     * @var string
     * @Encrypted
     * @ORM\Column(type="string", nullable=true)
     */
    protected $taxNumber;
    
    /**
     * True if the user is self employed.
     * 
     * @var string | boolean
     * 
     * @Encrypted
     * @ORM\Column(type="string", nullable=true)
     */
    protected $isSelfEmployed;
    
    /**
     * Date of birth
     * 
     * @var string | \DateTimeInterface
     * 
     * @Encrypted
     * @ORM\Column(type="string", nullable=true)
     */
    protected $dob;
   

Where encrypting a field you will need to set the column type as string.

Your getters and setters may also need to be type delcared.

For example, boolean should either be return declared bool, or return a bool using a ternary method.

<?php
    /**
     * Get isSelfEmployed
     *
     * @return boolean
     */
    public function isSelfEmployed(): bool
    {
        return $this->isSelfEmployed;
    }

    /**
     * Get isSelfEmployed
     *
     * @return boolean
     */
    public function isSelfEmployed()
    {
        return ($this->isSelfEmployed == 1 ? true: false);
    }

For DateTime parameters store the date as a string, and use the getters and setters to convert that string.

You may also need to create a DataTransformer if you are using the parameter in a form with the DateType formtype.

The bundle comes with an DoctrineEncryptSubscriber. This subscriber catches the doctrine events onLoad, onFlush and postFlush.

The onLoad event subscriber will decrypt your entity parameter at loading. This means that your forms and form fields will already be decrypted.

The onFlush and postFlush event subscribers will check if encryption is enabled, and encrypt the data before entry to the database.

So, in normal CRUD operation you do not need to do anything in the controller for encrypting or decrypting the data.

You can of course inject the EncryptorInterface service any time into classes either by using autowiring or defining the injection in your service definitions.

<?php
    use SpecShaper\EncryptBundle\Encryptors\EncryptorInterface;
    ...
    /**
     * @var SpecShaper\EncryptBundle\Encryptors\EncryptorInterface;
     */
    private $encryptor;
    ...
    
    // Inject the Encryptor from the service container at class construction
    public function __construct(EncryptorInterface $encryptor)
    {
        $this->encryptor = $encryptor;
    }
    
    // Inject the Encryptor in controller actions.
    public function editAction(EncryptorInterface $encryptor)
    {
        ...
        // An example encrypted value, you would get this from your database query.
        $encryptedValue = "3DDOXwqZAEEDPJDK8/LI4wDsftqaNCN2kkyt8+QWr8E=<ENC>";
        
        $decrypted = $encryptor->decrypt($encryptedValue);
        ...
    }

Or you can dispatch the EncryptEvent.

<?php
    ...
    use SpecShaper\EncryptBundle\Event\EncryptEvent;
    use SpecShaper\EncryptBundle\Event\EncryptEvents;
    use Symfony\Component\EventDispatcher\EventDispatcherInterface;
    ...
    
    public function indexAction(EventDispatcherInterface $dispatcher)
    {
        ...
        // An example encrypted value, you would get this from your database query.
        $event = new EncryptEvent("3DDOXwqZAEEDPJDK8/LI4wDsftqaNCN2kkyt8+QWr8E=<ENC>");

        $dispatcher->dispatch(EncryptEvents::DECRYPT, $event);
        
        $decrypted = $event->getValue();
    }

If you query a repository using a select with an array result then the doctrine onLoad event subscriber will not decyrpt any encrypted values.

In this case, use the twig filter to decrypt your value when rendering.

{{ employee.bankAccountNumber | decrypt }}