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

Michael StJohns <msj@nthpermutation.com> Tue, 11 August 2015 19:21 UTC

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To: stephen.farrell@cs.tcd.ie
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From: Michael StJohns <msj@nthpermutation.com>
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Date: Tue, 11 Aug 2015 15:21:18 -0400
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Subject: Re: [Dtls-iot] Secure Time (again)
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On 8/11/2015 3:00 PM, stephen.farrell@cs.tcd.ie wrote:
>
> On Tue Aug 11 19:31:01 2015 GMT+0100, Michael StJohns wrote:
>> 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.
> Sure. All I meant by 'asking' was, well, asking:-) I fully agree that were work in the IETF on this topic needed we'd have to figure out how/where to best do that but the folks on that list would I guess be better informed (than me anyway:-)

Maybe  -but a quick look of WG documents suggests that the science (and 
a lot of the engineering) for this has already been done in the IEEE 
1588  (Precision Time Protocol) group and that what's happening in the 
IETF is only the plumbing to make it work over/with IP.

I guess what I'm saying is that I don't actually know what I'd ask them 
that would be in their wheelhouse and that I couldn't get a better 
answer from Google or Dave Mills or maybe one of his (ex?) grad students.

No worries - I may drop Karen O a note to chat about this.

Mike

>
> S.
>   
>
>> Mike
>>
>>
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> >