README

A Laravel trait for handling encrypted data in PostgreSQL with configurable encryption algorithms, modes, and comprehensive query methods.

Features

Automatic Encryption/Decryption: Automatically handles encryption on save and decryption on retrieval
Rich Query Methods: Provides multiple encrypted data query methods (whereCrypted, whereCryptedIn, whereCryptedNot, etc.)
Configurable Encryption: Support for custom encryption algorithms, modes, and padding
Batch Operations: Support for batch encrypted data updates
Security: Uses PostgreSQL's built-in encrypt/decrypt functions for data security

Requirements

PHP 8.1 or higher
Laravel 9.0, 10.0, or 11.0
PostgreSQL with pgcrypto extension enabled

Installation

You can install the package via composer:

composer require toolman/laravel-postgresql-encrypted-model

Enable PostgreSQL pgcrypto Extension

Make sure the pgcrypto extension is enabled in your PostgreSQL database:

CREATE EXTENSION IF NOT EXISTS pgcrypto;

Environment Configuration

Add the following environment variables to your .env file:

DB_ENCRYPTION_KEY=your_secret_encryption_key_here
DB_ENCRYPTION_ALGORITHM=aes
DB_ENCRYPTION_MODE=cbc
DB_ENCRYPTION_PADDING=pkcs

Publish Configuration (Optional)

You can publish the configuration file:

php artisan vendor:publish --provider="Toolman\LaravelPostgresqlEncryptedModel\PostgreEncryptedModelServiceProvider" --tag="config"

Usage

Basic Setup

Use the trait in your Eloquent model and define the encrypted fields:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Toolman\LaravelPostgresqlEncryptedModel\PostgreEncryptedModel;

class User extends Model
{
    use PostgreEncryptedModel;

    protected $fillable = [
        'name',
        'email',
        'phone',
        'address',
        'social_security_number',
    ];

    /**
     * Define which fields should be encrypted
     */
    protected $encryptedFields = [
        'phone',
        'address', 
        'social_security_number'
    ];

    /**
     * Optional: Custom encryption settings
     */
    protected $encryptionAlgorithm = 'aes';  // aes, des, 3des, cast5, blowfish
    protected $encryptionMode = 'cbc';       // cbc, ecb, cfb, ofb
    protected $encryptionPadding = 'pkcs';   // pkcs, none

    protected static function boot()
    {
        parent::boot();
        
        static::creating(function ($model) {
            $model->initializePostgreEncryptedModel();
        });
    }
}

Database Migration

Ensure encrypted fields use appropriate data types (recommend text or bytea):

Schema::create('users', function (Blueprint $table) {
    $table->id();
    $table->string('name');
    $table->string('email')->unique();
    $table->text('phone'); // Encrypted field
    $table->text('address'); // Encrypted field
    $table->text('social_security_number'); // Encrypted field
    $table->timestamps();
});

Basic CRUD Operations

// Create - automatic encryption
$user = User::create([
    'name' => 'John Doe',
    'email' => 'john@example.com',
    'phone' => '0912345678', // Will be encrypted
    'address' => 'Taipei, Taiwan', // Will be encrypted
    'social_security_number' => 'A123456789' // Will be encrypted
]);

// Read - automatic decryption
echo $user->phone; // Output: 0912345678 (decrypted)
echo $user->address; // Output: Taipei, Taiwan (decrypted)

Encrypted Query Methods

// Basic queries
$users = User::whereCrypted('phone', '=', '0912345678')->get();
$users = User::whereCrypted('address', 'LIKE', '%Taipei%')->get();

// IN queries
$phones = ['0912345678', '0987654321', '0911111111'];
$users = User::whereCryptedIn('phone', $phones)->get();

// NOT IN queries
$users = User::whereCryptedNotIn('phone', $phones)->get();

// NOT queries
$users = User::whereCryptedNot('address', 'LIKE', '%Taipei%')->get();

// BETWEEN queries
$users = User::whereCryptedBetween('social_security_number', 'A100000000', 'A999999999')->get();

// NULL checks
$users = User::whereCryptedNull('phone')->get();
$users = User::whereCryptedNotNull('address')->get();

// LIKE search
$users = User::whereCryptedLike('address', '%Taipei%')->get();

// Combined queries
$users = User::where('name', 'John')
    ->whereCrypted('phone', '=', '0912345678')
    ->orWhereCryptedIn('address', ['Taipei', 'Kaohsiung'])
    ->get();

Batch Updates

$user = User::find(1);

// Batch update (including encrypted fields)
$user->updateEncrypted([
    'name' => 'Jane Doe',
    'phone' => '0987654321', // Will be encrypted
    'address' => 'Kaohsiung, Taiwan' // Will be encrypted
]);

Manual Encryption/Decryption

$user = new User();

// Manual encryption
$encryptedPhone = $user->encryptValue('phone', '0912345678');

// Manual decryption
$decryptedPhone = $user->decryptValue('phone', $encryptedPhone);

API Reference

Scope Methods

scopeWhereCrypted(Builder $query, string $column, string $operator, $value): Builder
scopeOrWhereCrypted(Builder $query, string $column, string $operator, $value): Builder
scopeWhereCryptedIn(Builder $query, string $column, array $values): Builder
scopeWhereCryptedNotIn(Builder $query, string $column, array $values): Builder
scopeWhereCryptedNot(Builder $query, string $column, string $operator, $value): Builder
scopeWhereCryptedBetween(Builder $query, string $column, $min, $max): Builder
scopeWhereCryptedNull(Builder $query, string $column): Builder
scopeWhereCryptedNotNull(Builder $query, string $column): Builder
scopeWhereCryptedLike(Builder $query, string $column, string $pattern): Builder

Instance Methods

encryptValue(string $column, $value): string
decryptValue(string $column, string $encryptedValue): ?string
updateEncrypted(array $data): bool
getEncryptedFields(): array
setEncryptedFields(array $fields): void
setEncryptionAlgorithm(string $algorithm): void
setEncryptionMode(string $mode): void
setEncryptionPadding(string $padding): void

Important Notes

Performance: Encrypted queries are slower than regular queries due to database-level decryption
Indexing: Encrypted fields cannot use regular indexes; consider separate search index tables if needed
LIKE Searches: Due to encryption characteristics, LIKE searches have poor performance; use cautiously
Key Management: Properly secure your encryption keys; lost keys mean unrecoverable data
Backups: Include encryption keys when backing up data

Security Recommendations

Use sufficiently strong encryption keys (recommend at least 32 characters)
Regularly rotate encryption keys (requires re-encrypting existing data)
Use different encryption keys in different environments
Limit access to encryption keys
Consider using Laravel's encryption service to protect the keys themselves

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

License

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

toolman/laravel-postgresql-encrypted-model

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