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

Derek Atkins <derek@ihtfp.com> Wed, 12 August 2015 15:17 UTC

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From: Derek Atkins <derek@ihtfp.com>
To: Michael StJohns <msj@nthpermutation.com>
References: <55C4D1CE.6010802@gmx.net> <55C79A90.5070900@nthpermutation.com> <55C9CFB4.5070702@gmx.net> <CABcZeBPfV9fmu_67sT0ewf+dRy5Ww4_nZUeQyhBQ9+RsHb_g2g@mail.gmail.com> <55CA0692.9000509@gmx.net> <55CA0837.5050008@nthpermutation.com> <55CA0A5C.1020304@sics.se> <55CA0AAB.8070808@gmx.net> <55CA0D93.5020209@nthpermutation.com> <55CA153C.2080001@cs.tcd.ie> <55CA3F65.20002@nthpermutation.com>
Date: Wed, 12 Aug 2015 11:17:12 -0400
In-Reply-To: <55CA3F65.20002@nthpermutation.com> (Michael StJohns's message of "Tue, 11 Aug 2015 14:31:01 -0400")
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Cc: dtls-iot@ietf.org, Stephen Farrell <stephen.farrell@cs.tcd.ie>
Subject: Re: [Dtls-iot] Secure Time (again)
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Michael StJohns <msj@nthpermutation.com> writes:

> On 8/11/2015 11:31 AM, Stephen Farrell wrote:
>>
>> On 11/08/15 15:58, Michael StJohns wrote:
>>> I'm wondering if it might not be a bad idea to invite Dave Mills to come
>>> to an IETF to do a presentation on secure mesh time and give us his
>>> thoughts.
>> We could and that'd be a really useful great talk if it happened. But
>> we also have an active WG on this topic. [1] Maybe starting by asking
>> there would help?
>>
>> S.
>>
>> [1] https://tools.ietf.org/wg/tictoc/
>
> Hi Stephen -
>
> From the tictoc charter:
>> The Timing over IP Connections and Transfer Of Clock (TICTOC) WG is
>>      concerned with highly accurate time and frequency distribution over
>>      native IP and MPLS-enabled IP Packet Switched Networks (PSNs)
>
> I knew about the group, but I didn't think it was a great fit for IOT
> stuff for a lot of reasons including their desire for "highly accurate
> time" against the IOT desire for lightweight.   As I read the charter,
> tictoc is NTP on steroids and what we want is NTP on depressants.  :-)
> They really aren't trying to solve a problem in a manner that would
> have applicability to IOT.

I actually attended a tictoc meeting a couple IETFs ago and presented
the IoT time sync problem to them.  They were unaware of the issue and
considered it an interesting problem to try to solve.

We should continue to engage them!

> Mike

-derek
-- 
       Derek Atkins                 617-623-3745
       derek@ihtfp.com             www.ihtfp.com
       Computer and Internet Security Consultant

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