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Re: V3 secret keys

nagydani@epointsystem.org (Daniel A. Nagy) Sat, 04 February 2006 10:16 UTC

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Date: Sat, 04 Feb 2006 10:58:58 +0100
To: Ben Laurie <ben@algroup.co.uk>
Cc: Wim Lewis <wiml@hhhh.org>, OpenPGP <ietf-openpgp@imc.org>, Adam Back <adam@cypherspace.org>
Subject: Re: V3 secret keys
Message-ID: <20060204095858.GA3446@epointsystem.org>
References: <43E20DB6.30209@algroup.co.uk> <20060202140612.GA13906@epointsystem.org> <43E23D08.10806@algroup.co.uk> <20060202184601.GA20613@bitchcake.off.net> <Pine.NEB.4.62.0602021105420.13506@photomat.hhhh.org> <20060202204304.GA8476@epointsystem.org> <43E376D5.1070102@algroup.co.uk>
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On Fri, Feb 03, 2006 at 03:29:25PM +0000, Ben Laurie wrote:
> Daniel A. Nagy wrote:
> > Right, your description is equivalent, but different from the traditional
> > view of CFB. I implemented CFB resynchronization based on the description in
> > Bruce Schneier's "Applied Cryptography", without looking into any
> > implementations. The result was interoperable at first attempt.
> 
> I (reluctantly) dug out my copy of "Applied Cryptography" and I see no
> mention of "resynchronisation".

Figure 9.9 (in Section 9.6) shows the encryption and decryption of a partial
block. Resynchronization is making the current block partial (ending it
at the current position) and starting a new one.

-- 
Daniel

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