/**
  * Chiffrement de la chaîne témoin
  *
  * @return string
  */
 function encrypt()
 {
     return CMbSecurity::encrypt(CMbSecurity::AES, CMbSecurity::CTR, $this->_passphrase, self::SAMPLE, $this->iv);
 }
 /**
  * Chiffrement d'un mot de passe
  *
  * @param string $passphrase Phrase de passe à appliquer
  *
  * @return string
  */
 function encrypt($passphrase = null)
 {
     if (!$passphrase) {
         $passphrase = CValue::sessionAbs("passphrase");
     }
     return CMbSecurity::encrypt(CMbSecurity::AES, CMbSecurity::CTR, $passphrase, $this->password, $this->iv);
 }