[Hipsec-rg] Question about IPSec ESP mode of HIP connection

[miika at iki.fi (Miika Komu)]

On Tue, 7 Nov 2006, Joseph wrote:

> Dear all,
>    I have one question about the HIP connection. In the ESP connection of
> HIP, there is a ESP_TRANSFORM parameter in HIP. There is a field called
> "Padding" in the ESP_TRANSFORM based on the draft-ietf-hip-esp-04.txt. Is
> this "Padding" same as the "Padding" in the ESP tailer (which is 0-255
> bytes)?

No, it is not.

> If yes, during the ESP connection, is it just set the "Padding" in
> ESP Tailer into 0?

Padding is just padding for the HIP parameter, it has not really any 
connection with ESP trailers. See base draft 06 section 5.2.1. According 
to the base draft, the padding is just zeroes.

-- 
Miika Komu                                       http://www.iki.fi/miika/