Re: Anybody know details about Schneier's "flaw"?

Rodney Thayer <rodney@tillerman.to> Wed, 14 August 2002 16:40 UTC

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Date: Wed, 14 Aug 2002 09:34:03 -0700
To: ietf-openpgp@imc.org
From: Rodney Thayer <rodney@tillerman.to>
Subject: Re: Anybody know details about Schneier's "flaw"?
In-Reply-To: <sjmn0rpwl3m.fsf@kikki.mit.edu>
References: <OF94CAB39F.FCF0A0BA-ON86256C15.00507ACA@kodak.com> <OF94CAB39F.FCF0A0BA-ON86256C15.00507ACA@kodak.com>
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I think it's got too many odd things in it to require compression.
Basically it's a "if you let yourself get social engineered then
your crypto can be used against you" attack.

At 10:50 AM 8/14/2002 -0400, Derek Atkins wrote:

>john.dlugosz@kodak.com writes:
>
> > Does anybody know more about this?  Can a minor improvement to the new
> > -bis draft fix it?
>
>a) this only works if you do NOT compress your messages before you encrypt.
>b) this only works if you do NOT sign the message AND you do NOT use an MDC
>
> > --John