christophe barbé on Sat, 19 Jan 2002 18:00:18 +0100


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Re: [PLUG] Re: PGP & GPG compatibility (fwd)


It's not clear to me if you use PGP or GPG but I use GPG and your
signature is correctly verified.

Christophe

On Sat, Jan 19, 2002 at 11:35:57AM -0500, gabriel rosenkoetter wrote:
> This, perhaps, explains some of our confusion over whether or not a
> given message had a good or bad signature.
> 
> (Well, maybe, maybe not, since my messages are signed clear-text. At
> the least, the suggestion seems to be that NAI isn't too interested
> in actually sticking to OpenPGP... but considering it's not even a
> draft standard, one can't especially blame them.)
> 
> Are my messages still coming through with bad signatures for anyone
> here? (They always verify just fine coming back to me, but one would
> hope that to be the case, as my machine is rather authoritative
> about my key.)
> 
> -- 
> gabriel rosenkoetter
> gr@eclipsed.net
> 
> ----- Forwarded message from Werner Koch <wk@gnupg.org> -----
> 
> From: Werner Koch <wk@gnupg.org>
> Subject: Re: PGP & GPG compatibility
> Date: Tue, 15 Jan 2002 13:19:35 +0100
> To: cryptography@wasabisystems.com
> Delivered-To: gr@eclipsed.net
> Delivered-To: cryptography-outgoing@wasabisystems.com
> Delivered-To: cryptography@wasabisystems.com
> Organisation: g10 Code GmbH
> X-PGP-KeyID: 621CC013
> X-Request-PGP: finger://wk@g10code.com
> Mail-Followup-To: cryptography@wasabisystems.com
> In-Reply-To: <D0E88486-1F61-11B2-B496-000393471DA8@pobox.com> (Nicholas
>  Brawn's message of "Sat, 3 Jan 1970 09:41:26 +1000")
> User-Agent: Gnus/5.090004 (Oort Gnus v0.04) Emacs/20.7
>  (i386-debian-linux-gnu)
> Precedence: bulk
> 
> On Sat, 3 Jan 1970 09:41:26 +1000, Nicholas Brawn said:
> 
> > What's the state of the game with PGP and GPG compatibility?
> 
> According to the bug reports I receive for GnuPG, it seems that even
> the latest versions of PGP (7.0.3?) are still not OpenPGP compatible.
> At least they still don't understand version 4 signatures on data
> packets (only on keys).  I had in mind that this was fixed some time
> ago, but obviously this isn't the case.
> 
> There is a problem wrt text mode signatures: no agreement was found on
> what a line ending consists of.  PGP translates a CR inside a line
> (well, what most non Apple programmers consider a line ending) into a
> CR,LF sequence for hashing.  The proper solution is not to use
> textmode signatures except for cleartext signed messages.
> 
> About two years ago we agreed on a way to implement MDC and defined
> new packet types for it.  I did some tests with Hal Finney and it used
> to work.  The OpenPGP draft was later changed to introduce key flags
> and use one to enable MDC mode.  However, GnuPG uses MDC mode with all
> ciphers of a block length other than 64 bits (i.e. Twofish and AES*).
> The draft has still not been released as a new RFC so this may change
> again :-(.
> 
> The flaw in the secret key protection mechanism was discussed for a
> short time but it seems that nobody is willing to continue with this.
> I made several suggestion on how to do it.
> 
> Interoperability tests should have happened last summer but for
> unknown reasons they didn't.  It is very sad to see that after 3 years
> we have not achieved to get OpenPGP into draft status :-(.
> 
> 
>   Werner
> 
> -- 
> Werner Koch        Omnis enim res, quae dando non deficit, dum habetur
> g10 Code GmbH      et non datur, nondum habetur, quomodo habenda est.
> Privacy Solutions                                        -- Augustinus
> 
> 
> 
> 
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> ----- End forwarded message -----



-- 
Christophe Barbé <christophe.barbe@ufies.org>
GnuPG FingerPrint: E0F6 FADF 2A5C F072 6AF8  F67A 8F45 2F1E D72C B41E

Dogs believe they are human. Cats believe they are God.

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