Eloquent Encrypted Casting

Published on by

Eloquent Encrypted Casting image

A recent pull request by Jason McCreary which was released in Laravel 8.12 included the ability to encrypt a model attribute using an Eloquent cast.
The included encrypted cast option now also allows casting the attribute into an array, JSON, object or a collection after it has been decrypted.

class EncryptedCast extends Model
{
public $casts = [
'secret' => 'encrypted',
'secret_array' => 'encrypted:array',
'secret_json' => 'encrypted:json',
'secret_object' => 'encrypted:object',
'secret_collection' => 'encrypted:collection',
];
...
}

This encrypted cast uses Laravel’s Crypt facade to encrypt and decrypt the attribute from the database. There were earlier PRs back in Laravel 5.3 which were closed that attempted to bring this functionality into Laravel.
If you use Laravel’s built-in encrypted cast notation then it is important to realise this locks your app key. As this is the secret which Crypt uses under the hood to encrypt and decrypt everything in Laravel from sessions and cookies.

The same weekend that Laravel encrypted casts were added into Laravel core, I completed a hackathon hosted by my Employer UKFast where I created EloquentEncrypted. This uses 4096-bit RSA keys to cast model attributes into the database in an encrypted form.

This separates Eloquents encryption from the app key so that you are free to rotate this as needed, something that is advised by Tighten in their blog post APP_KEY And You. This package also includes migration helpers to set the encrypted field accordingly in your database.

Schema::create('sales_notes', function (Blueprint $table) {
$table->increments('id');
$table->encrypted('private_data');
$table->timestamps();
});

The Eloquent Encryption package also allows for casting after encryption with a couple of initial offers to show how this can be done. You can cast to a string using the default Encrypted cast, an Integer or float and even to a collection. Collections are serialised into JSON strings which are then encrypted.

<?php
 
namespace App\Models;
 
use Illuminate\Database\Eloquent\Model;
use RichardStyles\EloquentEncryption\Casts\Encrypted;
use RichardStyles\EloquentEncryption\Casts\EncryptedInteger;
use RichardStyles\EloquentEncryption\Casts\EncryptedFloat;
use RichardStyles\EloquentEncryption\Casts\EncryptedCollection;
 
class SalesData extends Model
{
/**
* The attributes that should be cast.
*
* @var array
*/
protected $casts = [
'private_data' => Encrypted::class,
'private_int' => EncryptedInteger::class,
'private_float' => EncryptedFloat::class,
'private_collection' => EncryptedCollection::class,
];
}

I’ve also put together another package called Eloquent AES which allows you to use AES-256-CBC encryption for your eloquent model data. This creates a separate Eloquent key which is used to encrypt/decrypt during casting.

<?php
namespace App\Models;
 
use Illuminate\Database\Eloquent\Model;
use RichardStyles\EloquentAES\Casts\AESEncrypted;
 
class SalesData extends Model
{
/**
* The attributes that should be cast.
*
* @var array
*/
protected $casts = [
'private_data' => AESEncrypted::class,
];
}

This simply creates another instance of the Encrypter class within laravel using a different config key. This second package was created because people should be able to choose the method of encryption and how that choice affects other areas of their applications.

Richard Styles photo

Senior PHP Developer, with full-stack experience. TailwindCSS advocate.

Filed in:
Cube

Laravel Newsletter

Join 40k+ other developers and never miss out on new tips, tutorials, and more.

image
Laravel Forge

Easily create and manage your servers and deploy your Laravel applications in seconds.

Visit Laravel Forge
Laravel Forge logo

Laravel Forge

Easily create and manage your servers and deploy your Laravel applications in seconds.

Laravel Forge
Tinkerwell logo

Tinkerwell

The must-have code runner for Laravel developers. Tinker with AI, autocompletion and instant feedback on local and production environments.

Tinkerwell
No Compromises logo

No Compromises

Joel and Aaron, the two seasoned devs from the No Compromises podcast, are now available to hire for your Laravel project. ⬧ Flat rate of $7500/mo. ⬧ No lengthy sales process. ⬧ No contracts. ⬧ 100% money back guarantee.

No Compromises
Kirschbaum logo

Kirschbaum

Providing innovation and stability to ensure your web application succeeds.

Kirschbaum
Shift logo

Shift

Running an old Laravel version? Instant, automated Laravel upgrades and code modernization to keep your applications fresh.

Shift
LoadForge logo

LoadForge

Easy, affordable load testing and stress tests for websites, APIs and databases.

LoadForge
Paragraph logo

Paragraph

Manage your Laravel app as if it was a CMS – edit any text on any page or in any email without touching Blade or language files.

Paragraph
Lucky Media logo

Lucky Media

Bespoke software solutions built for your business. We ♥ Laravel

Lucky Media
Lunar: Laravel E-Commerce logo

Lunar: Laravel E-Commerce

E-Commerce for Laravel. An open-source package that brings the power of modern headless e-commerce functionality to Laravel.

Lunar: Laravel E-Commerce
Bacancy - Staff Augmentation logo

Bacancy - Staff Augmentation

Leave your web app development hustles to the leading IT Staff Augmentation Service Providers. Choose from an extensive pool of 1050+ developers and give yourself the sigh of success you deserve with Bacancy. Get In Touch Today!

Bacancy - Staff Augmentation
DocuWriter.ai logo

DocuWriter.ai

Save hours of manually writing Code Documentation, Comments & DocBlocks, Test suites and Refactoring.

DocuWriter.ai
Rector logo

Rector

Your partner for seamless Laravel upgrades, cutting costs, and accelerating innovation for successful companies

Rector

The latest

View all →
Protect Routes with JWT Tokens Using This Package for Laravel image

Protect Routes with JWT Tokens Using This Package for Laravel

Read article
Increment a Rate Limiter by a Custom Amount in Laravel 10.46 image

Increment a Rate Limiter by a Custom Amount in Laravel 10.46

Read article
Add Kanban Boards to Your Laravel App in Seconds image

Add Kanban Boards to Your Laravel App in Seconds

Read article
October CMS v3.6 Ships Today, Full of New Features image

October CMS v3.6 Ships Today, Full of New Features

Read article
Laracon EU Videos are now out image

Laracon EU Videos are now out

Read article
Use Google's Gemini AI in Laravel image

Use Google's Gemini AI in Laravel

Read article