Thanks for all the help so far.  I'm still looking, and I found this so far :

http://vader.brad.ac.uk/tea/tea.shtml

Its way overkill for what I'm trying to do.  Even on my 16F876 all the keys
and arrays would suck up quite a bit of space.  I'm trying it on a compiler
set up for 16 bit variables and just cutting everything in half (64 bit key
instead of 128, decode 32 bits of data instead of 64, etc.).  I'll let you
know if it works and pass on the code for the cc5 C compiler if it does.


Erik Reikes
Software Engineer
Xsilogy, Inc.

ereikes@xsilogy.com
ph : (858) 535-5113
fax : (858) 535-5163
cell : (858) 663-1206