EncryptionServiceProvider.php
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<?php
namespace Illuminate\Encryption;
use RuntimeException;
use Illuminate\Support\Str;
use Illuminate\Support\ServiceProvider;
class EncryptionServiceProvider extends ServiceProvider
{
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
$this->app->singleton('encrypter', function ($app) {
$config = $app->make('config')->get('app');
// If the key starts with "base64:", we will need to decode the key before handing
// it off to the encrypter. Keys may be base-64 encoded for presentation and we
// want to make sure to convert them back to the raw bytes before encrypting.
if (Str::startsWith($key = $this->key($config), 'base64:')) {
$key = base64_decode(substr($key, 7));
}
return new Encrypter($key, $config['cipher']);
});
}
/**
* Extract the encryption key from the given configuration.
*
* @param array $config
* @return string
*
* @throws \RuntimeException
*/
protected function key(array $config)
{
return tap($config['key'], function ($key) {
if (empty($key)) {
throw new RuntimeException(
'No application encryption key has been specified.'
);
}
});
}
}