A: 

I don't have an answer but did you ask this question at the sun java forum ? Sun guys are lurking out there and they're more friendly to such questions these days.

You might have better luck out there than here!

anjanb
No I haven't but thanks for the reminder.
Chris Markle
OK I posted on the Sun Java programming site at: http://forums.sun.com/thread.jspa?threadID=5336610 . Maybe that'll get a bite...
Chris Markle
+1  A: 

The Sun implementation is not open source as far as I know. You can download an open source JCE here:

http://www.bouncycastle.org/java.html

Jonathan