riccardodallavia/laravel-encryptable

Easily anonymize sensitive data through eloquent queries

Laravel Encryptable

This package allows you to anonymize sensitive data (like the name, surname and email address of a user) similarly to Laravel's Encryption feature, but still have the ability to make direct queries to the database. An example use case could be the need to make search queries through anonymized attributes.

This package currently supports MySQL and PostgreSQL databases.

Installation

You can install the package via composer:

composer require maize-tech/laravel-encryptable

You can publish the config file with:

php artisan vendor:publish --provider="Maize\Encryptable\EncryptableServiceProvider" --tag="encryptable-config"

This is the content of the published config file:

return [
    /*
    |--------------------------------------------------------------------------
    | Encryption key
    |--------------------------------------------------------------------------
    |
    | The key used to encrypt data.
    | Once defined, never change it or encrypted data cannot be correctly decrypted.
    |
    */

    'key' => env('ENCRYPTION_KEY'),

    /*
    |--------------------------------------------------------------------------
    | Encryption cipher
    |--------------------------------------------------------------------------
    |
    | The cipher used to encrypt data.
    | Once defined, never change it or encrypted data cannot be correctly decrypted.
    | Default value is the cipher algorithm used by default in MySQL.
    |
    */

    'cipher' => env('ENCRYPTION_CIPHER', 'aes-128-ecb'),
];

Usage

Basic

To use the package, just add the Encryptable cast to all model attributes you want to anonymize.

<?php

namespace App\Models;

use Maize\Encryptable\Encryptable;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    protected $fillable = [
        'name',
        'email',
    ];

    protected $casts = [
        'name' => Encryptable::class,
        'email' => Encryptable::class,
    ];
}

Once done, all values will be encrypted before being stored in the database, and decrypted when querying them via Eloquent.

Manually encrypt via PHP

use Maize\Encryptable\Encryption;

$value = "your-decrypted-value";

$encrypted = Encryption::php()->encrypt($value); // returns the encrypted value

Manually decrypt via PHP

use Maize\Encryptable\Encryption;

$encrypted = "your-encrypted-value";

$value = Encryption::php()->decrypt($value); // returns the decrypted value

Manually decrypt via DB

use Maize\Encryptable\Encryption;

$encrypted = "your-encrypted-value";

$encryptedQuery = Encryption::db()->encrypt($value); // returns the query used to find the decrypted value

Custom validation rules

You can use one of the two custom rules to check the uniqueness or existence of a given encryptable value.

ExistsEncrypted is an extension of Laravel's Exists rule, whereas UniqueEncrypted is an extension of Laravel's Unique rule. You can use them in the same way as Laravel's base rules:

use Maize\Encryptable\Rules\ExistsEncrypted;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rule;

$data = [
    'email' => '[email protected]',
];

Validator::make($data, [
    'email' => [
        'required',
        'string',
        'email',
        new ExistsEncrypted('users'), // checks whether the given email exists in the database
        Rule::existsEncrypted('users') // alternative way to invoke the rule
    ],
]);

use Maize\Encryptable\Rules\UniqueEncrypted;
use Illuminate\Support\Facades\Validator;

$data = [
    'email' => '[email protected]',
];

Validator::make($data, [
    'email' => [
        'required',
        'string',
        'email',
        new UniqueEncrypted('users'), // checks whether the given email does not already exist in the database
        Rule::uniqueEncrypted('users') // alternative way to invoke the rule
    ],
]);

Testing

composer test

Changelog

Please see CHANGELOG for more information on what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

• Enrico De Lazzari
• Riccardo Dalla Via
• All Contributors

License

The MIT License (MIT). Please see License File for more information.