To revisit a recent thread...

(a) Encryption

 Looks like the Java based encryption package at www.cryptix.org works
 on MPE/iX quite well. I just gave it a try on a 5.5 system with JDK 1.2.2
 installed. I wrote a handful of small test programs to generate some DSA
 and RSA key pairs, create and verify digital signatures for a file. Also
 used a combination of DES and RSA for file encryption and decryption. The
 random DES key was used to encrypt a file and then encrypted with an RSA
 public key. On the target system the DES key could be decrypted with the
 RSA private key and then used to DES decrypt the file again. In my test
 this worked from PC to 3000 and the other way round. Cryptix offers more
 than just DES and RSA, but I only tried those two at the moment.

 I'd be happy to share my (quick and dirty) test programs, none being more
 than one or two printed pages long. However, I'm somewhat hesitant to put
 encryption-related source code on my web page at www.editcorp.com (as it
 is inside the US and I don't want to see Michael G. end up in jail ;-) So,
 at the moment, you'd have to ask me to get a zip file by eMail.

(b) Compression

 Java comes with a the package java.util.zip to handle ZIP and GZIP format
 as far as I understand, so the compression aspect should not be difficult
 to handle in Java as well.

One nice aspect of Java and it's platform neutral nature is the fact that
there seem to be a lot of people writing programs for MPE/iX, who have no
idea about the 3000 at all ;-)

I strongly suspect that this also applies to the Cryptix folks (who seem
to currently be working on implementing OpenPGP in Java... so I'll probably
just sit back and wait until they are done ;-)

Lars "your milage may vary" Appel.

PS... Unlike C code, Java does not require "porting" to work on MPE :-)