Re: [CGA-EXT] Review of draft-ietf-csi-proxy-send

Jari Arkko <jari.arkko@piuha.net> Fri, 11 December 2009 05:37 UTC

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Date: Fri, 11 Dec 2009 07:37:05 +0200
From: Jari Arkko <jari.arkko@piuha.net>
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To: Tony Cheneau <tony.cheneau@it-sudparis.eu>
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Cc: draft-ietf-csi-proxy-send@tools.ietf.org, cga-ext@ietf.org
Subject: Re: [CGA-EXT] Review of draft-ietf-csi-proxy-send
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Tony,

> The padding field is exactly defined this way in RFC 3971 (although a
> Pad Length field was present on the -04 version of the SEND draft). I 
> think the draft-ietf-csi-proxy-send-01 document only reuses the format
> of the badly defined RSA Signature Option.

Ah, OK.

> If RFC 3971 was to be updated, I agree that a padding length field 
> should be defined somewhere in the RSA (or XXX) Signature Option. Was 
> there a rational behind its removal during the RFC 3971
> standardisation process ?

I can't recall. Maybe this is one of the bugs that we need to fix. Or 
perhaps there is a way to determine the lengths but neither of us can't 
just see it right now. In any case, it should be clearly specified in 
3971bis and the proxy-send drafts.

Jari