HOWTO on interfacing with gnupg/pgp?

[Johan Wevers]

You, Werner Koch, wrote:

>> archives. Pitty that GnuPG can't decrypt conventionally encrypted pgp 2
>> files.

> That's due to the use of IDEA.

No, also with the IDEA plugin it won't decrypt conventionally encrypted pgp
2 files. And since I don't use those files for commercial purposes it would
not be a violation of the license - if I cared about that.

And if we leave the IDEA matter: when I use a hacked version of pgp 2,
2.6.3ia-multi04, with the CAST5 algorithm, I get exactly the same error.
When I decrypt a conventionally encrypted file with gpg I get a "bed key"
error, although the used algorithm is recognized:

vulcan:~/tmp> gpg -v nokia.htm.asc
gpg: armor header: Version: 2.6.3ia-multi04
gpg: CAST5 encrypted data
gpg: decryption failed: bad key

The following file is encrypted conventionally with pgp 2.6.3ia-multi04,
with -cat, using the CAST5 algo, with password "test" (without the ""). I
can't decrypt it with gpg. I have no problems trying to debug this myself,
but in which piece of the gnupg code does this go wrong?

-----BEGIN PGP MESSAGE-----
Version: 2.6.3ia-multi04
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=3tjp
-----END PGP MESSAGE-----

> You did sign the http://petition.eurolinux.org - right?

Yes, of course.

-- 
ir. J.C.A. Wevers         //  Physics and science fiction site:
johanw@vulcan.xs4all.nl   //  http://www.xs4all.nl/~johanw/index.html
PGP/GPG public keys at http://www.xs4all.nl/~johanw/pgpkeys.html