[wi-sun rlmmwg] Security Features in RLMM Profile 1v01

[rverotiana at nict.go.jp]

Dear Yamada-san and all,

>From our last call I believe we are down to a choice between [2] and [3].

If my understanding is correct, here are the things we should consider in this discussion:

*The key update frequency depends on: 

- the R1/R9 traffic (traffic to and from R0 is bound by their duty
cycle and is less significant in the key update frequency)
- the number of R1 devices in the network
- others?

*The following implementation cases are possible:

- Many R1, low traffic (Key update frequency similar to the R0
wake-up frequency) ==> [2]
- Many R1, high traffic ==> [3], but broadcast become costly
(multiple unicasts). 
        o   If broadcast transmissions are frequent, [2] is better
        o   Another option would be to have a common key for R1s and unique respective keys for R0
- Low number of R1 (most devices are R0) or only R0 ==> [2] or [3].
        o   If [3], broadcasts can be handled with multiple unicast transmissions synchronized with the duty cycle of R0.
- Others?

So far, there is no strict definition or requirement on few/many R1 or high/low traffic.
Therefore, one of the most feasible/preferable choice might be "to simply hold those two options."

This might help the discussion tomorrow.

Best regards,

Verotiana 


>Dear RLMM WG members,
>
>This is gentle reminder to members for providing feedback for discussion 
>on security features in RLMM Profile 1v01. We will discuss about this in 
>the call to be held tomorrow on Jun. 30th JST.
>
>If you could provide your feedback before the call, we can share it in 
>the call.
>
>Best regards,
>Ryota
>
>
>On 2016/06/24 16:14, Ryota Yamada wrote:
>> Dear RLMM WG members,
>>
>> I have uploaded the updated version of the material which summarize
>> current status of discussion regarding security feature for 1v01:
>> https://dms.wi-sun.org/htcomnet/Handlers/Download.ashx?action=download&file=M2MIG%2F20160624%20Security%20Features%20in%20RLMM%20Profile%201v01%200v01.pptx
>>
>>
>> Please go through the material and give your feedback before next call
>> to be held fromm 11:00 on Jun. 30th JST.
>>
>> There are two major questions:
>> (1) Which option on page 3 of the material shall we choose?
>> (2) Which option on page 7 shall we choose for how to manage key?
>>
>> If you have any comment or suggestion, please let me know.
>>
>> Best regards,
>> Ryota
>>
>>
>
>様
>
>お世話になっております。オムロン株式会社の山田亮太です。
>
>さん
>
>おつかれさまです。(企画)オープンの山田亮太です。
>
>
>
>以上、よろしくお願いいたします。
>
>
>-- 
>+--------------------------------
>| Ryota Yamada <ryamada at ari.ncl.omron.co.jp>
>|
>| OMRON Corporation
>|  Technology and Intellectual Property H.Q.
>|   Planning and CTO Support Division
>|    Open Innovation Sec.
>|
>| Tel: +81-774-74-2158 (Ext: 7-232-6558)
>
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