Looking for C obfuscator

[David Loewenstern]

I am looking for a program (or emacs macro) which will translate 
C code into unreadable but functionally equivalent code.  At minimum, 
it must replace all variable names with cryptic names such as a1, i23, etc.
Ideally, it should also rename functions.  Further obfuscation isn't really
necessary for my purposes, but wouldn't hurt either.

Since I rarely read this newsgroup, please reply directly to me at:

David Loewenstern
<davel at whutt.att.com>
AT&T Bell Laboratories
14B-253
Whippany, NJ 07981
201-386-6516