interoperability with pgp

Roland Rosenfeld
Sat, 2 Oct 1999 19:59:49 +0200

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On Sat, 02 Oct 1999, J. Michael Ashley wrote:

> > > > Though it is possible to add support for RSA and IDEA by
> > > > compiling them as modules and using load-extension. Which
> > > > means that you can communicate with PGP 2.x users.

> > > But only to a limited degree. See list archives for recent thread I
> > > started on the inability to encrypt to PGP2 user. :(

> > > A one-way street is not very satisfying.
> In fact, you can go both ways. See the PGP 2.x interoperability
> guide on the GnuPG documentation project web page:
It doesn't say anything about the combination of signing and encryption, which normally doesn't work correct. Gero's script works around this problem by first creating a detached signature, then creating a signed message with this (using some perl tricks and the --no-literal option of gpg) and after this it encrypts this temporary message with gpg --no-literal. Don't ask me why this works, but it works correct for sign+encrypt. Ciao Roland --=20 * * * PGP: 1024/DD08DD6D 2D E7 CC DE D5 8D 78 BE 3C A0 A4 F1 4B 09 CE AF --9QtXyXGM8HCrXlir Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.0 (GNU/Linux) iD8DBQE39kgUO7/Pd72LBQ0RAhZFAKCdJHQtDqlRjA3NhE6Nwh0Zu05K4QCfTDNE HFRrTZFc6cTd1Kn+/45cGAg= =4rGx -----END PGP SIGNATURE----- --9QtXyXGM8HCrXlir--