Re: [Spud] [Privsec-program] Detecting and Defeating TCP/IP Hypercookie Attacks

Eliot Lear <lear@cisco.com> Sun, 31 July 2016 16:04 UTC

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To: Stephen Farrell <stephen.farrell@cs.tcd.ie>, =?UTF-8?Q?Mirja_K=c3=bchlewind?= <mirja.kuehlewind@tik.ee.ethz.ch>
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From: Eliot Lear <lear@cisco.com>
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Date: Sun, 31 Jul 2016 18:04:27 +0200
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Cc: Brian Trammell <ietf@trammell.ch>, privsec-program@iab.org, spud <spud@ietf.org>
Subject: Re: [Spud] [Privsec-program] Detecting and Defeating TCP/IP Hypercookie Attacks
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Hi,


On 7/31/16 4:05 PM, Stephen Farrell wrote:

> - I am unconvinced that "giving up" some privacy in the manner
>   envisaged will lead to an overall privacy benefit. I very much
>   fear that opposite - that any extensible mechanism will give up
>   so much privacy so as to render much higher layer confidentiality
>   moot.

This is the problem with this discussion.  You fear giving up privacy. 
There is no protocol to assuage your fears.  Mirja has said that they
didn't want to propose a protocol, presumably out of appearing to
present a fait accomplit, and round and round we go.  I propose the
following:

Someone show bits, and then let's see if your concerns are borne out or
assuaged.  This argument is too abstract.

Eliot