GnuPG and PGP2.

Jonathan & Shandra Wiebe jbwiebe@cnx.net
Sun Mar 4 19:04:06 2001


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Verily, on 4 Mar 2001,
 A scroll of the prophet Krisse SelÚn arrived, 
 Saying:


>
> Hello,
>
> At present, simultaneously encrypting and signing a message with so
> called "RSA Legacy" keys requires using a pretty complicated
> workaround method.
>
> Is there some fundamental problem in implementing this feature
> properly or is it just an unadressed issue so far ? Can I expect
> future releases of GnuPG to improve this functionality ?
The fundamental problem is that PGP 2.x uses the IDEA symetrical encryption algorithm. IDEA is under patent until 2007. The GPL (Gnu Public Licence) prohibits the inclusion of patented algorithms or software. Hence IDEA cannot be included in GnuPG until the patent expires in 2007. The same situation existed for RSA keys until August 2000. Prior to that the RSA algorithm was patented and was not included in GnuPG. After the patent expired the next release of GnuPG included support for RSA keys. I expect the same thing to happen with IDEA support when the IDEA patent expires in 2007. Regards, Jonathan B. Wiebe ~~ It's hard to read through a book on the principles of magic without glancing at the cover periodically to make sure it isn't a book on software design. Bruce Tognazzini ~~ Jonathan B. Wiebe <jbwiebe@cnx.net> <>< Kelowna, BC Cogitor, judicor: ergo sum. PGP Keys available on keyservers DH/DSS ID: 0x1B899535 RSA ID: 0x400956F5 ~~ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4-1 (MingW32) Comment: For info see http://www.gnupg.org iD8DBQE6on38HjG5JBuJlTURAkCSAKD0/MJHoJAIpOz63sZb4XrRPMjA1ACgmTnM u4BndgDITe6DmQm/j9ucqMA= =qN0f -----END PGP SIGNATURE-----