[ale] PGP/GPG Compatibility Issues

[Michael H. Warfield]

On Tue, Jun 18, 2002 at 04:16:50PM -0400, Jerry Z. Yu wrote:
> I believe he's talking the other way around. GPG doesn't have "idea" (as 
> it is patented. or it expires too? ). 

	I see what you mean about having things turned around.  He's
receiving GPG keys and incorporating them into PGP 7.0.1.

	My bad...  :-)

	Mike

> The FAQ 5.4 may have the answer at http://www.gnupg.org/faq.html#q5.4
> 5.4) Why is PGP 5.x not able to encrypt messages with some keys? 
> 
>                PGP Inc refuses to accept ElGamal keys of type 20 even for 
> encryption. They only support type 16 (which is
>                identical at least for decryption). To be more 
> inter-operable, GnuPG (starting with version 0.3.3) now also uses
>                type 16 for the ElGamal subkey which is created if the 
> default key algorithm is chosen. You may add an type 16
>                ElGamal key to your public key which is easy as your key 
> signatures are still valid.
> 
> On Tue, 18 Jun 2002, Michael H. Warfield wrote:
> 
> #On Tue, Jun 18, 2002 at 10:47:58AM -0400, Randy Janinda wrote:
> #> I'm managing a corporate PGP (ebiz 7.0.1) program and have recently
> #> received GPG keys for a customer. Unfortunately, the keys can be
> #> inserted on the keyring, but encryption fails when this key is used.
> #> Does anyone have info about GPG/PGP interoperability and what the
> #> problem and solution may be? I really want this to work and not force
> #> the customer into the clutches of NAI.
> #
> #	Your problem is probably the IDEA encryption algorithm.
> #You'll have to download the pluggin, build it, then add it to
> #your configuration.
> #
> #	The following was blatently plagerized from a message from
> #Calum Mackay <calum.mackay at sun.com> posted recently to the gnupg-users
> #mailing list which sums it up very nicely...
> #
> #] Quick answer:
> #] 
> #] o Download ftp://ftp.gnupg.dk/pub/contrib-dk/idea.c
> #] 
> #] o Compile:
> #] 
> #]        gcc -Wall -O2 -shared -fPIC -o idea idea.c
> #] 
> #] o Copy "idea" into your extensions dir, e.g <.../lib/gnupg>
> #] 
> #] o Add to ~/.gnupg/options:
> #] 
> #]         load-extension idea
> #] 
> #] You can now decrypt files you may have previously encrypted with "pgp -c".
> #] 
> #] cheers,
> #] Calum.
> #
> #	In this case, you can also deal with messages and keys with
> #IDEA as the encryption preference.
> #
> #	If that's NOT the problem, you are going to have to post more
> #information, like the specific failures and error messages you encountered.
> #
> #> Thanks,
> #
> #> Randy Janinda
> #
> #
> #	Mike
> #-- 
> # Michael H. Warfield    |  (770) 985-6132   |  mhw at WittsEnd.com
> #  /\/\|=mhw=|\/\/       |  (678) 463-0932   |  http://www.wittsend.com/mhw/
> #  NIC whois:  MHW9      |  An optimist believes we live in the best of all
> # PGP Key: 0xDF1DD471    |  possible worlds.  A pessimist is sure of it!
> #
> #---
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> #
> 
> Jerry Z. Yu					+1-404-487-8544 (O)
> systems engineer				z.yu at voicecom.com
> is support, voicecom, llc			www.voicecom.com

-- 
 Michael H. Warfield    |  (770) 985-6132   |  mhw at WittsEnd.com
  /\/\|=mhw=|\/\/       |  (678) 463-0932   |  http://www.wittsend.com/mhw/
  NIC whois:  MHW9      |  An optimist believes we live in the best of all
 PGP Key: 0xDF1DD471    |  possible worlds.  A pessimist is sure of it!

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