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Re: [6tsch] FW: draft-ohba-6tsch-security-00

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 27 June 2013 23:55 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Qin Wang <qinwang@berkeley.edu>
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Date: Thu, 27 Jun 2013 19:54:01 -0400
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Cc: Thomas Watteyne <watteyne@eecs.berkeley.edu>, "6tsch@ietf.org" <6tsch@ietf.org>, "yoshihiro.ohba@toshiba.co.jp" <yoshihiro.ohba@toshiba.co.jp>
Subject: Re: [6tsch] FW: draft-ohba-6tsch-security-00
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Qin Wang <qinwang@berkeley.edu> wrote:

    > It seems to me that ,besides Symmetric algorithm module like AES-based
    > CCM* required by 802.15.4e , every node has to equip a Asymmetric
    > algorithm module as well. correct? If it is true, I'm afraid if it is
    > too heavy for a node with
    > limited resource.

People keep assuming this, yet other people point to running code.
How many asymmetric operations per decade can a mute sustain?
The answer may be too small for our use, but it can not be zero.

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




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Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works

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