IETF Logo Mail Archive

Re: [Dtls-iot] Secure Time (again)

Hannes Tschofenig <hannes.tschofenig@gmx.net> Tue, 11 August 2015 14:28 UTC

Return-Path: <hannes.tschofenig@gmx.net>
X-Original-To: dtls-iot@ietfa.amsl.com
Delivered-To: dtls-iot@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8A58F1A8AFA for <dtls-iot@ietfa.amsl.com>; Tue, 11 Aug 2015 07:28:47 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.91
X-Spam-Level:
X-Spam-Status: No, score=-1.91 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
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 4HA1Rfdx3wlo for <dtls-iot@ietfa.amsl.com>; Tue, 11 Aug 2015 07:28:45 -0700 (PDT)
Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6A07A1A8AF6 for <dtls-iot@ietf.org>; Tue, 11 Aug 2015 07:28:45 -0700 (PDT)
Received: from [192.168.131.134] ([80.92.114.74]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0MKYLf-1ZPzMD0oDP-0020Jb; Tue, 11 Aug 2015 16:28:42 +0200
Message-ID: <55CA0692.9000509@gmx.net>
Date: Tue, 11 Aug 2015 16:28:34 +0200
From: Hannes Tschofenig <hannes.tschofenig@gmx.net>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0
MIME-Version: 1.0
To: Eric Rescorla <ekr@rtfm.com>
References: <55C4D1CE.6010802@gmx.net> <55C79A90.5070900@nthpermutation.com> <55C9CFB4.5070702@gmx.net> <CABcZeBPfV9fmu_67sT0ewf+dRy5Ww4_nZUeQyhBQ9+RsHb_g2g@mail.gmail.com>
In-Reply-To: <CABcZeBPfV9fmu_67sT0ewf+dRy5Ww4_nZUeQyhBQ9+RsHb_g2g@mail.gmail.com>
OpenPGP: id=4D776BC9
Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="IP11kMQ1xWF9ijaB1gJL6ng5HjrLpOdGF"
X-Provags-ID: V03:K0:TaoFliH0XofKruWdlAM9WLoc2/LrEaRzy8ako2DOdTpgNIjr6eO L6I51dibMoY4b7Sism6ZQCQsFrS4gv3NbVgZXHva9JglE3AW/Y79J+mlO7DjGsSSRnCazrr zvDOcHps1UQ7Sa4rNr3XieQtx7U7jEH/yfrKoxrAC/LYMsozmjJr9LGhX1yY32OqCObOubF MohVtlJDuC1All6HUh5lQ==
X-UI-Out-Filterresults: notjunk:1;V01:K0:ULeVqKaYIzI=:iTV5Ol2bxAZm9W6+a32hgR /CVLcviKDpB0bRgq3sfArwLY17siYo14OMqazV+2MTe5ZWqJxF1743IVPTelBUXUO2G7SkfrN GbRJwxuWRnCqWuIhY1NxC17zn0myPzPxRH/fQ5yQC54mkLnHyzs76vgpzbCjocrIKHAglZbfe 1OeVD7fy7uSWXeJ3ZPjjprUGA2cEoEW1b4pDmmXaW5Iifdbapx9GFnfnBAMGt20/yLOTa9Ec0 xxY5tGcNPHJ2Ce6XBy08ayVtj+mVTZ8jxU4h4LGicbG8Pr55ei8kl146Nk4fxyeVHXGABESt4 0Pbj+HpIbPyHZVn4uwhgpc8ZIBAD0dZHCxI7qhvYJhIFAJcS36bKJSzO5j3ZKuBbwhI/3Lpor ZGsfNVDItty56gdOszuqxT0MZQwuhM4wGay5yFl+bkZ8dn7SNCBMppEXBxykwNsCnJWlSN1xi nfIchVzmkZ8HO7AA8O9npD0irLcI2Zno5Ni1uknA6PElmciZmGW3XLKgXmh+jVy6YHRZySjba JxzmPq2Kn+OAm0y3SkQvXriEBAA3hfhvzEsvCkQcfbGmWfC7y+8mO8Cmsiks/ZgB7SSjFbUQS 3+wxM853ZhEJQJh5J7H0BkpFCXxhwxsMczL86/xHthsTjCexkii1nL+NynnW6SBEOPuqpCoRa XM1ei9kvDIoaArQNfT0gpHE7iAuPWo7ssflZuDcwvSoUe+o2fvmAMf/J+2kh29YPs2lX+ouy8 9s9qYMdZcT84sW8h
Archived-At: <http://mailarchive.ietf.org/arch/msg/dtls-iot/UOOvJ57xr5otTcyiCAvSyfWMKbM>
Cc: dtls-iot@ietf.org, Michael StJohns <msj@nthpermutation.com>
Subject: Re: [Dtls-iot] Secure Time (again)
X-BeenThere: dtls-iot@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DTLS for IoT discussion list <dtls-iot.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dtls-iot>, <mailto:dtls-iot-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dtls-iot/>
List-Post: <mailto:dtls-iot@ietf.org>
List-Help: <mailto:dtls-iot-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dtls-iot>, <mailto:dtls-iot-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 11 Aug 2015 14:28:47 -0000

Thanks, Ekr.

On 08/11/2015 03:33 PM, Eric Rescorla wrote:
> This is already done.

While I understand the reason for removing the functionality from the
ServerHello I still think it is a needed functionality for many IoT
deployments to obtain time information (without having to fall back to NTP).

v2.23.0 | Report a Bug | By Email