Re: [6tisch] [6tisch-security] proposed security text for architecture draft

Michael Richardson <> Mon, 17 November 2014 19:48 UTC

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Date: Mon, 17 Nov 2014 14:48:30 -0500
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Subject: Re: [6tisch] [6tisch-security] proposed security text for architecture draft
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<> wrote:
    > For 1), existing RADIUS servers can be used if EAP server is a
    > physically separated from PCE box where scalability is needed.
    > EAP-based approach can also support roaming cases where electric
    > vehicles are authenticated via smart meters.

I don't understand this: we are not looking for distributed authenetication,
we are looking for centralized authorization.

    > Support for UIM card (via EAP-SIM, EAP-AKA or a new EAP method) would
    > make 6tisch more attractive to cover certain business scenarios.

really?  WG chairs can you tell me if requiring UIM cards is an option.
If so, there is no join problem; it's already solved and Yoshihiro is right:
use EAP-SIM, followed by 6top authenticated with the EAP-SIM created

    > Please note that I do not disagree with DTLS-based approach for more
    > resource constrained device (although more work seems to be needed to

That's the only nodes which are in scope.

I don't want to boil the ocean here!

Michael Richardson <>, Sandelman Software Works
 -= IPv6 IoT consulting =-