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/**
 * @return string
 */
private function getConfigCryptoKey16() {
  return (string)basic\utility\config::get('brandbox', 'cryptoKey16');
}

/**
 * @param string $encrypted
 * @return mixed
 */
private function decrypt($encrypted = '') {        
  $decrypted = '';
  if($encrypted != ''):
    $cryptoKey16 = $this->getConfigCryptoKey16();
    $decrypted = openssl_decrypt($encrypted, 'aes-256-cbc', $cryptoKey16, 0, $cryptoKey16);
  endif;
  
  return $decrypted;
}

/**
 * @param $decrypted
 * @return mixed
 */
private function encrypt($decrypted) {
  $cryptoKey16 = $this->getConfigCryptoKey16();

  return openssl_encrypt($decrypted, 'aes-256-cbc', $cryptoKey16, 0, $cryptoKey16);
}