[10154] in cryptography@c2.net mail archive
Re: PGP & GPG compatibility
daemon@ATHENA.MIT.EDU (David Shaw)
Wed Jan 16 13:12:43 2002
Date: Tue, 15 Jan 2002 23:19:57 -0500
From: David Shaw <dshaw@jabberwocky.com>
To: Axel H Horns <horns@ipjur.com>
Cc: cryptography@wasabisystems.com
Message-ID: <20020115231956.A2756@akamai.com>
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In-Reply-To: <3C43F988.20274.155728@localhost>; from horns@ipjur.com on Tue, Jan 15, 2002 at 09:42:32AM +0100
On Tue, Jan 15, 2002 at 09:42:32AM +0100, Axel H Horns wrote:
> On 3 Jan 2070, at 9:41, Nicholas Brawn wrote:
>
> > What's the state of the game with PGP and GPG compatibility?
>
> Interesting question.
>
> I'm using PGP 6.5.8 for my professional confidential e-mails and
> sometimes I get complaints from GnuPG users saying they can't use my
> Pubkey.
>
> Currently I'm preparing an article on Internet security issues
> related to the businesses of attorneys-at-law and patent attorneys.
> In this context, it is already a hard job to promote usage of e-mail
> encryption, and such incompatibilities between various versions of
> PGP and GnuPG marke it even harder.
I recently spent a good bit of time working out various compatibility
issues between GnuPG and different versions of PGP. In the process, I
added a --pgp2 flag to the new (not yet released) GnuPG which sets up
the various options for a PGP 2.x message, and also prints a warning
if the user does something that would render the message not PGP 2.x
compatible.
I've gotten some interest in a --pgp6 flag, but there is less of a
need for this as the default options in GnuPG now do the right thing
for PGP 6/7 in nearly all circumstances within the constrains of the
RFC. Plus, a --pgp6 would then imply a --pgp7 followed by a --pgp8
someday and it's a path I'm reluctant to head down. :)
David
--
David Shaw | dshaw@jabberwocky.com | WWW http://www.jabberwocky.com/
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