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Re: [Anima-bootstrap] anima-bootstrap: Bootstrap proxy discovery options

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 09 December 2015 20:19 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Wed, 09 Dec 2015 15:19:40 -0500
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Subject: Re: [Anima-bootstrap] anima-bootstrap: Bootstrap proxy discovery options
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Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
    > I *really* don't see how the first step can be anything other than a
    > recognizable unencrypted multicast probe, whether it is sent by the joiner or
    > by some node that is already trusted. You could require that the unencrypted
    > probe includes a public key so that a unicast response can be encrypted; but
    > neither end is authenticated at that stage.

Yes, that's true.
The point isn't that it's other than unencrypted multicast probe.

The point is that if this unencrypted multicast probe is a normal part of ACP
operation, then it is not obvious to (passive!) malicious observers which
device is actually bootstraping vs helping.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

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