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Re: Mandatory Algorithm Changes?

Werner Koch <wk@gnupg.org> Mon, 21 February 2005 14:37 UTC

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To: Ben Laurie <ben@algroup.co.uk>
Cc: Jon Callas <jon@callas.org>, OpenPGP <ietf-openpgp@imc.org>
Subject: Re: Mandatory Algorithm Changes?
References: <20050208194442.F2C6A57E2A@finney.org> <42092EC2.9040501@systemics.com> <87zmyeyyg9.fsf@wheatstone.g10code.de> <420A012A.5020204@systemics.com> <39c100e92dbc54b9fcb678d904676384@callas.org> <4219A890.3000603@algroup.co.uk> <87d5uu6upb.fsf@wheatstone.g10code.de> <4219D182.3090203@algroup.co.uk>
From: Werner Koch <wk@gnupg.org>
Organisation: g10 Code GmbH
OpenPGP: id=5B0358A2; url=finger:wk@g10code.com
Date: Mon, 21 Feb 2005 15:09:59 +0100
In-Reply-To: <4219D182.3090203@algroup.co.uk> (Ben Laurie's message of "Mon, 21 Feb 2005 12:18:10 +0000")
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On Mon, 21 Feb 2005 12:18:10 +0000, Ben Laurie said:

> Sorry, not very well today, and it seems not thinking straight. So why
> is there an issue with compatibility?

This happens as soon as you switch your software without updating all
copies of your public key.  In particular downgrading the software is
troublesome but also upgrading sometimes (e.g. Tiger/192 has been
removed).  You might also have two different applications using the
same keypair.

For the average user the preferences work.


Shalom-Salam,

   Werner

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