Dear Michael, dear Rafa, dear all,

Thanks for getting back the discussion on using EAP over CoAP for AAA in 6TiSCH. This will also make it cross-compatible with long-range radio AAA, which will also use EAP-over-CoAP.

I would say that we have the chance that the EAP over CoAP is still a (advanced) draft, so there could be exchanges to make sure that the two are well-adapted to each other.

For example, we could use CoAP block transfer for EAP message fragmentation (as suggested by the CoAP IE draft). There are some other ways in which we could use CoAP-only based fragmentation, but I would first like to see if there is any problem related to the block transfer (e.g. DOS?) as it would be my favorite.

I would also think that we could borrow some ideas from LTE key derivation, where with a single MSK (provided by the EAP process) we could derive as many keys as we want, and also have seamless roaming (keeping the perfect forward security property) of the communications.

Best,
Alexander


Le 29/09/2015 11:31, Rafa Marin Lopez a écrit :
Hi Michael:

Regarding EAP-over-CoAP, we will update our draft before Yokohama.

Best Regards.
El 26/09/2015, a las 21:10, Michael Richardson <[email protected]> escribió:

Alexander Pelov suggested something interesting.
1. CoAPie gives us CoAP across link-layer constructs.
2. EAP-over-CoAP [such as: marin-ace-wg-coap-eap] lets us move EAP using CoAP.

The result is that one could, conceptually use this to build a 1X-like
enrollment system.  I'm not sure which layer does
fragmentation/fraglettation; or even if there is enough bytes left over to
make this useful at all.

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        | network architect  [
]     [email protected]  http://www.sandelman.ca/        |   ruby on rails    [

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