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It seems you're trying to import a secret ring created by GPG into
PGP and then encrypt on that in PGP. What I would do is create the
key in PGP, import the public key into GPG. Use that key to encrypt
in GPG, which PGP should then be able to decrypt.

More generically, always decrypt with the software which created the
key in the first place.

Hope this helps.

>Doing test for verify "how to take" the GPG and PGP, I have happened me the
>next:
>I Importe correctly the keyring of GPG 1.0.3 in PGP 6.5.8.
>I encripted a message with GPG 1.0.3. Once, I trated of decrypt this with
>PGP, saaying the program:
>"An error has ocurr: Encripted sesion key is bad"
>Why is this? Exist a way of correct this?
>
>Thanks
>
>Salvador Vicente
>SalvadorVicente@NOESPANbigfoot.comNOSPAN
>
>P.D. Sorry my bad english!
>
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Erik Wessel
STREET | CANCE
MARKETING COMMUNICATIONS
233 North Water Street
Milwaukee WI 53202
ph 414 | 765 | 0333
fax 414 | 765 | 1207

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OK. I created the key in GPG and import in PGP. The problem, is that I
encripted with PGP and the key imported, and works well in PGP and GPG. The
problem is when encripted with GPG, due to only I can decrypt with GPG.

Thanks for your reply.

Salvador
----- Original Message -----
From: "Erik Wessel" <erikw@street-cance.com>
To: "Salvador" <salvadorvicente@yahoo.es>
Cc: <gnupg-users@gnupg.org>
Sent: Tuesday, September 26, 2000 8:30 PM
Subject: Re: PGP can't decript messages encripted with GPG


> It seems you're trying to import a secret ring created by GPG into
> PGP and then encrypt on that in PGP. What I would do is create the
> key in PGP, import the public key into GPG. Use that key to encrypt
> in GPG, which PGP should then be able to decrypt.
>
> More generically, always decrypt with the software which created the
> key in the first place.
>
> Hope this helps.
>
> >Doing test for verify "how to take" the GPG and PGP, I have happened me
the
> >next:
> >I Importe correctly the keyring of GPG 1.0.3 in PGP 6.5.8.
> >I encripted a message with GPG 1.0.3. Once, I trated of decrypt this
with
> >PGP, saaying the program:
> >"An error has ocurr: Encripted sesion key is bad"
> >Why is this? Exist a way of correct this?
> >
> >Thanks
> >
> >Salvador Vicente
> >SalvadorVicente@NOESPANbigfoot.comNOSPAN

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> OK. I created the key in GPG and import in PGP. The problem, is that I
> encripted with PGP and the key imported, and works well in PGP and GPG.
> The
> problem is when encripted with GPG, due to only I can decrypt with GPG.

Try the following options when encrypting with GnuPG:
--cipher-algo Cast5
--digest-algo SHA1
--force-v3-sigs

HTH.
Tschuess,
Ralf

--
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KSV Kreditschutz-Vereinigung GmbH 44866 Bochum
Score-Consult Tel. 02327/9114-28
http://www.schufa.de/ Fax. 02327/8 40 27




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Thanks. This works very well. Also can be added to options file.

Regards,
Salvador Vicente


> > OK. I created the key in GPG and import in PGP. The problem, is that I
> > encripted with PGP and the key imported, and works well in PGP and GPG.
> > The
> > problem is when encripted with GPG, due to only I can decrypt with GPG.
>
> Try the following options when encrypting with GnuPG:
> --cipher-algo Cast5
> --digest-algo SHA1
> --force-v3-sigs


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On Tue, 26 Sep 2000, Salvador wrote:

> "An error has ocurr: Encripted sesion key is bad"
> Why is this? Exist a way of correct this?

You created the secret key with gpg and copied it over to PGP I
assume. GPG creates preferences to the Twofish algorithm and
therefore it tries to use Twofish and the new MDC encryption packet
which PGP 6.5.8 does not understand.

2 solutions:

1. Update to PGP 7.0

or

2. Use "gpg --disable-cipher twofish" ( you may want to put it
into ~/.gnupg/options.

MDC packets are needed to avoid a (not so) new choosen ciphertext attack,
therefore it is a good idea to use the first solution.

Ciao,

Werner

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Werner Koch GnuPG key: 621CC013
OpenIT GmbH http://www.OpenIT.de

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