* @return An error code
* @exception E_SUCCESS The method is successful.
* @exception E_OUT_OF_MEMORY The memory is insufficient.
* @exception E_KEY_NOT_FOUND The specified key is not found.
* @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
* @exception E_SYSTEM A system error has occurred. @n
* @return An error code
* @exception E_SUCCESS The method is successful.
* @exception E_OUT_OF_MEMORY The memory is insufficient.
* @exception E_KEY_NOT_FOUND The specified key is not found.
* @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
* @exception E_SYSTEM A system error has occurred. @n