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

"Fossati, Thomas (Nokia - GB)" <thomas.fossati@nokia.com> Mon, 14 November 2016 13:36 UTC

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From: "Fossati, Thomas (Nokia - GB)" <thomas.fossati@nokia.com>
To: Nikos Mavrogiannopoulos <nmav@redhat.com>, "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [ALU] [TLS] extending the un-authenticated DTLS header
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Date: Mon, 14 Nov 2016 13:36:35 +0000
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Cc: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Subject: Re: [TLS] [ALU] extending the un-authenticated DTLS header
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Hi Nikos,

On 14/11/2016 12:58, "TLS on behalf of Nikos Mavrogiannopoulos"
<tls-bounces@ietf.org on behalf of nmav@redhat.com> 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.
>
>What do you think?

In DTLS 1.3 we could probably re-purpose the version field to signify
"header version" instead?

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