/**
  * @param $encrypted_text
  * @return string
  */
 public function decrypt($encrypted_text)
 {
     $this->IV->setHexadecimalPosition(substr($encrypted_text, -2));
     $this->key->setHexadecimalPosition(substr($encrypted_text, -4, 2));
     $encrypted_text = base64_decode(substr($encrypted_text, 0, -4));
     $decrypted = $this->mdecrypt($encrypted_text);
     $this->resetCurrentProcess();
     return $this->stringFormatter->cleanString($decrypted);
 }