Hi Stefan (Stefan M. Ranguelov), in <3531E639.1DCA@informatik.hu-berlin.de> on
 Apr 13 you wrote:

> IIRC sombody on the list has written a DES implementation, but he lives
> in USA and would not like to send the code to Europe. I dont know wich
> PIC device he uses. I could dig up the adress so you can ask him by
> priv. e-mail.

I know that Europeans have implemented DES in a C84, too.  Scan the pay tv
pirate sites for old sources or hex files.  Some of these used DES.