tenancy-docs/source/docs/v3/tenant-attribute-encryption.blade.md

title	extends	section
Tenant attribute encryption	_layouts.documentation	content

Tenant attribute encryption

To encrypt the attributes, you must store them in custom columns. For example, we'll encrypt the tenant's database credentials (which are stored using the Virtual Column as tenancy_db_username and tenancy_db_password by default) in a few steps.

Add custom columns to the tenants migration (we recommend making the string size at least 512 characters, so it's big enough to contain the encrypted data):

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateTenantsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up(): void
    {
        Schema::create('tenants', function (Blueprint $table) {
            $table->string('id')->primary();

            // Your custom columns
            $table->string('tenancy_db_username', 512);
            $table->string('tenancy_db_password', 512);

            $table->timestamps();
            $table->json('data')->nullable();
        });
    }
}

Define the custom columns in the Tenant model:

public static function getCustomColumns(): array
{
    return [
        'id',
        'tenancy_db_username',
        'tenancy_db_password',
    ];
}

Then cast the attributes (using Laravel's encrypted casts, or your custom casts) to encrypt and decrypt the attributes when needed:

protected $casts = [
    'tenancy_db_username' => 'encrypted',
    'tenancy_db_password' => 'encrypted',
];