[MMUSIC] Unknown key shares in MMUSIC

Martin Thomson <martin.thomson@gmail.com> Mon, 13 March 2017 23:49 UTC

Return-Path: <martin.thomson@gmail.com>
X-Original-To: mmusic@ietfa.amsl.com
Delivered-To: mmusic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3AB6E129C37 for <mmusic@ietfa.amsl.com>; Mon, 13 Mar 2017 16:49:03 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.699
X-Spam-Level:
X-Spam-Status: No, score=-2.699 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mnU1KYS8F6V9 for <mmusic@ietfa.amsl.com>; Mon, 13 Mar 2017 16:49:01 -0700 (PDT)
Received: from mail-qk0-x234.google.com (mail-qk0-x234.google.com [IPv6:2607:f8b0:400d:c09::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 508AB129C2C for <mmusic@ietf.org>; Mon, 13 Mar 2017 16:48:47 -0700 (PDT)
Received: by mail-qk0-x234.google.com with SMTP id 1so235334453qkl.3 for <mmusic@ietf.org>; Mon, 13 Mar 2017 16:48:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=Yv52WcYQztng9FYVzhpX5sJakKAGgP2FyTSatEv3E0M=; b=Hjasz8NJIHDnatW2TcCq5dyR/xN7Qolc64VlY+GwilKw0DaagF5vExedJaqsOFJ1VW KaPI7Y4IxPDm+kjwecEwOFkO8+gmiStkOwU0sgnBXifqoROFT2T5Aw4+xsjGkcqcZE1K V+4Ut5gCRkxElc7uJFCvlZqpXGWuPC40QiRXkXs5yBXvHTXMh0wF5KqdgdVEbdCPzj0N VbSnhXSbp+DZHoy8BLZ7YZDEj/fWdW1KMotZdcJqoym3uEK2TVy1NsMI+Rze8N10EPW2 ur1PAOO0r7M42Qj8A+89YwxZ5nltO4aj/We+n+5d/OpJrEr4FhU7hug8l4R8LwqYKOrC QHBA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=Yv52WcYQztng9FYVzhpX5sJakKAGgP2FyTSatEv3E0M=; b=j16/Jw2FnMyska3cCxKxSvDqUI7TKX6UAUru6/CfPGEeVKtoTHUcUSBGu6OWmEld0Y EEkNTU/H2zvmvA5OJ1jFgIkh7FxcjcuyiaavKvTyD1AE4VkTqJG1eUZhUs6NxxB4XS6i hfKTZEOYEywfBeZdgvhqftzzd5fp2LXEoAnD6iflvoxhf4s3XW3TmK3oeOWv5gaX2795 3oKA/HMcj7VemEgujjRr4at+aTo5agsJeRAGNhC1Q0H5KY7icHZl2nsd5NnXl7qoRd5L Sq8DxBN3Q2Mnc2u3DwDjQ1hDi+Jkt7yxZtjxmKGDHS5sNWTsHdGVz9CTt8mNUlD45Ktv +CJg==
X-Gm-Message-State: AFeK/H1CJigI3guFF8EXZGvgGkaBY2gzls0y27gK9eb+Viq2ybsjia4yJWTEsjvWU77U9Gmg5L0pErut81LZuQ==
X-Received: by 10.55.18.144 with SMTP id 16mr34988646qks.5.1489448923655; Mon, 13 Mar 2017 16:48:43 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.140.27.194 with HTTP; Mon, 13 Mar 2017 16:48:43 -0700 (PDT)
From: Martin Thomson <martin.thomson@gmail.com>
Date: Tue, 14 Mar 2017 10:48:43 +1100
Message-ID: <CABkgnnXJvyZxmhU94VZAHNjWeaVoeThVBQVTDv0x3rLBtRrn4Q@mail.gmail.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>
Content-Type: text/plain; charset=UTF-8
Archived-At: <https://mailarchive.ietf.org/arch/msg/mmusic/xKnmY65ZRL0xk_uPUPDLCkmN3YY>
Subject: [MMUSIC] Unknown key shares in MMUSIC
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Multiparty Multimedia Session Control Working Group <mmusic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mmusic>, <mailto:mmusic-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mmusic/>
List-Post: <mailto:mmusic@ietf.org>
List-Help: <mailto:mmusic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mmusic>, <mailto:mmusic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 13 Mar 2017 23:49:03 -0000

After completely failing to remember and take into account feedback
during the avtcore meeting last time (thanks for the reminder
Jonathan), I would like to draw the attention of this group to this
draft:

https://datatracker.ietf.org/doc/draft-thomson-avtcore-sdp-uks/

The latest version builds on the a=dtls-id work in this group.
However, Jonathan's reminder highlighted a critical shortcoming of
that: it only works for DTLS.  We still have uses of TLS-over-TCP that
would not be addressed by the current iteration of the draft (though
they would have for the previous version).

One relatively simple solution is to define dtls-id as tls-id instead,
but that's disruptive.

I'd like to discuss this issue with an eye to resolving it before or
at Chicago; I realize that there is a probably a tight agenda, but the
outcome of that discussion might affect a very-far-advanced
draft-ietf-mmusic-dtls-sdp-21.