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Re: [TLS] extending the un-authenticated DTLS header

Eric Rescorla <ekr@rtfm.com> Tue, 15 November 2016 01:17 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Tue, 15 Nov 2016 10:16:25 +0900
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To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Cc: Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] extending the un-authenticated DTLS header
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On Tue, Nov 15, 2016 at 10:10 AM, Stephen Farrell <stephen.farrell@cs.tcd.ie
> wrote:

>
>
> On 14/11/16 12:58, Nikos Mavrogiannopoulos wrote:
> > Hi,
> >  For draft‐mavrogiannopoulos­‐dtls­‐cid­‐00 and we needed to extend the
> > DTLS un-authenticated part of the DTLS record header with an additional
> > field. That works well if this is the only draft ever extending the
> > DTLS record header. If not, modification order would be undefined.
> >
> > Would it make sense to introduce an extension header for DTLS 1.3 in
> > the lines of the IPv6 extension headers? That would allow TLS extension
> > negotiation to add more items on the un-authenticated header, and
> > potentially also remove redundant headers.
>
> I'd be interested in an analysis of the potential privacy
> impacts of this. Isn't this more or less the same as doing
> SPUD-for-DTLS? (If not, sorry for dragging in controversy:-)
>

It would no doubt depend what you put there.

-Ekr


>
> S.
>
> >
> > What do you think?
> >
> > regards,
> > Nikos
> >
> > _______________________________________________
> > TLS mailing list
> > TLS@ietf.org
> > https://www.ietf.org/mailman/listinfo/tls
> >
>
>
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>

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