protected function _customSaltGenerator()
    {
        $sHash = '';
        $sSalt = '';
        for ($i = 0; $i < 32; $i++) {
            $sHash = hash('sha256', $sHash . mt_rand());
            $iPosition = mt_rand(0, 62);
            $sSalt .= $sHash[$iPosition];
        }

        return $sSalt;
    }