Laravel DB Encryptor

A Laravel package for secure, transparent encryption and decryption of sensitive model attributes, storing them in a dedicated table while keeping your main tables clean and fast.

Features

• Seamless encryption/decryption of model attributes via a simple trait
• Encrypted data is stored in a separate encrypted_attributes table
• Only non-table attributes can be encrypted (enforced at runtime)
• Automatic loading and saving of encrypted attributes using Eloquent events
• Search/filter on encrypted properties using SHA-256 hash
• No sensitive values are ever logged
• Easy integration: just add the trait and define $encryptedProperties in your model
• Compatible with Laravel 12

Requirements

• PHP 8.2+
• Laravel 12
• OpenSSL PHP extension

How It Works

1. Add the HasEncryptedAttributes trait to your Eloquent model.
2. Define a public array property $encryptedProperties listing the attributes you want encrypted (these must NOT exist as columns in the model's table).
3. When you load a model, encrypted attributes are automatically decrypted and available as normal properties.
4. When you save a model, encrypted attributes are removed from the main table and securely stored in the encrypted_attributes table.
5. You can filter/search on encrypted properties using the provided query scope.

Example Model:

use Wazza\DbEncrypt\Traits\HasEncryptedAttributes;

class User extends Model
{
    use HasEncryptedAttributes;

    protected $fillable = ['name', 'email'];

    // Only non-table attributes can be encrypted!
    public array $encryptedProperties = [
        'social_security_number',
        'private_note',
    ];
}

Usage

• Use your model as normal:

$user = User::find(1);
$user->social_security_number = '123-45-6789';
$user->private_note = 'Sensitive info';
$user->save();

// When you retrieve the user again, encrypted attributes are automatically decrypted:
$user = User::find(1);
echo $user->social_security_number; // '123-45-6789'

• If you try to add an attribute to $encryptedProperties that already exists as a column, an exception will be thrown.

Filtering/Search on Encrypted Properties

You can filter or search for models by encrypted property value using the built-in query scope:

// Find users with a specific social security number
$users = User::whereEncrypted('social_security_number', '123-45-6789')->get();

This uses the SHA-256 hash of the value and joins the encrypted_attributes table for efficient searching, without ever exposing the decrypted value in the query or logs.

Installation Steps

1. Require the package in your Laravel project:

   composer require wazza/laravel-db-encryption

2. Publish the config and migration files (if needed):

   php artisan vendor:publish --provider="Wazza\DbEncrypt\DbEncryptServiceProvider"

3. Run the migration to create the encrypted_attributes table:

   php artisan migrate

4. Add the trait and $encryptedProperties to your models as shown above.

Monitoring & Logs

• All encryption/decryption operations are logged (without sensitive values).
• To monitor package logs:

  tail -f storage/logs/laravel.log | grep db-encrypt

Testing

• Run the test suite using Pest:

  ./vendor/bin/pest
  
  PASS  Tests\Unit\EncryptorTest
  ✓ it correctly hashes the value                                         0.40s
  ✓ it correctly encrypts and decrypts data                               0.15s
  ✓ it returns different ciphertext for same plaintext (random IV)        0.12s
  ✓ it throws on null input for encrypt                                   0.13s
  ✓ it throws on null input for decrypt                                   0.13s
  ✓ it throws on invalid base64 for decrypt                               0.14s
  ✓ it throws on missing key in config                                    0.19s
  
   PASS  Tests\Unit\ExampleTest
  ✓ that true is true                                                     0.28s
  
   PASS  Tests\Feature\ExampleTest
  ✓ it contains a successful example feature test                         0.18s
  
  Tests:    9 passed (9 assertions)
  Duration: 1.98s

• Ensure your models and encrypted attributes behave as expected.

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For more details, see the source code and comments. Contributions and issues welcome!