Hi Jonathan:

Please find below my suggested resolution of your comments related to 
security.

Best regards, Rene


On 2/17/2015 1:49 PM, Jonathan Simon wrote:
> My 2¢ feedback on the security section:
>
> 13 - Sending link-layer frames in the clear in the initial stage of 
> joining is not providing any benefit. We should always use 
> authentication, even if the key is not secret, as it provides the 
> ability to reject similar frames from other 802.15.4-based protocols. 
>  It also isn’t necessary to discuss such a detail here.
RS>>
I would suggest we replace the first sentence of p. 31, 1st para by the 
following one:
"This architecture operates on IEEE802.15.4 and expects link-layer 
security to be enabled at all times between connected devices, except 
for the very first step of the device join process, where a joining 
device may need some initial, unsecured exchanges so as to obtain its 
initial key material."
<<RS
>
> 13.1  -
> * "Triage" - So the JCE decides which nodes are more important and 
> assigns resources to them first? How?  Note this term is not used in 
> draft-richardson-6tisch-security-architecture-02.
> * "arbitrage" should be “arbitrate”
RS>>
I would suggest changing the definition of the JCE (p. 31, logical 
elements enumeration) to the following, to reflect this: "A Join 
Coordination Entity (JCE) that arbitrates network access and hands out 
network parameters (such as keying material);".

This brings it nicely in line with the use of arbitraging on the next 
page (p. 32, 3rd para, third line), where "that arbitrages" is replaced 
by "that arbitrates".
<<RS
>
> Other than that, it seem to be capturing the overall spirit of the 
> security architecture and highlights the open areas of security 
> discussion, e.g. that PANA is an open issue.
>
> Couple minor points:
> -- 
> Jonathan Simon, Ph. D
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> On Feb 12, 2015, at 5:06 AM, Shwetha Bhandari (shwethab) 
> <shwethab@cisco.com <mailto:shwethab@cisco.com>> wrote:
>
>> Hello All,
>>
>> We are down to the last week of this last call, and haven't received 
>> any comments/vote yet.
>> Please review and send in your comments / vote, this last call ends 
>> on 18th Feb.
>>
>> Thanks,
>> Shwetha
>>
>> From: Shwetha bhandari <shwethab@cisco.com <mailto:shwethab@cisco.com>>
>> Date: Wednesday, January 28, 2015 7:05 PM
>> To: "6tisch@ietf.org <mailto:6tisch@ietf.org>" <6tisch@ietf.org 
>> <mailto:6tisch@ietf.org>>
>> Subject: [6tisch] Last call for draft-ietf-6tisch-architecture-05
>>
>> Hello All,
>>
>> As discussed at the interim meeting last week, we are continuing a 
>> series of last calls for the drafts that the group produced over the 
>> course of the last 2 years.
>> This call is for the architecture draft 
>> http://tools.ietf.org/html/draft-ietf-6tisch-architecture-05 
>> <http://cp.mcafee.com/d/1jWVIqdEI9IzC76jhOyrKrhs7cFCQn1PbVJ5MsqekkSjhOrsuuusoLsS8QAHm0afB3ZzOVI-kfSfbCNPX-SgovW_cnKqemmeLsKCOOeUttBBdDBHFShjlhhsVkffGhBrwqrhdECXYyMCY-ehojd79KVI07eJjWtbVKY01M7ox7npBVvdQKVelb4O-NIjBfXjrzVuXVJOsGm9BO5mUm-waBYTu00CQrInsdwLQzh0qmT9OFoCqnjh05tFcQgmQYYQgeRyq848WXcLbVKBT9OFoCnSdysF_qrsvbTvdKndDCi_Ys-j>. 
>> Since both chairs are co-authors, I will be shepherding this 
>> particular document.
>> The call will last for three weeks ending on 18-Feb-2015 and outcome 
>> of the last call will be discussed at the interim call on Friday 
>> 20-Feb-2015, 7AM pacific; please express support or concerns about 
>> the publication of this work, which is originally aimed at 
>> informational status.
>>
>> Thanks,
>> Shwetha
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