From: Robert Maas, http://tinyurl.com/uh3t
Subject: Seeking CL software to generate public-key signatures
Date: 
Message-ID: <rem-2008aug15-007@yahoo.com>
I have already generated custom products of two large primes P*Q,
and have generated the public exponent which is the smallest
integer greater than 2 which is relative prime to phi(P*Q), and I
have generated the corresponding private exponent. I've posted
several such public key certificates here:
 <http://www.rawbw.com/~rem/WAP/Data/PublicCodeCertificates.dats.txt>
Of course the private exponent is not published there, but it's
available in a secret place on my personal computer (Macintosh
Performa).

So here's what I am seeking: Software written in Common Lisp which
will take the body (and any needed header fields) as input and
produce a standard public-key signature using the P*Q and private
key I've already chosen, which I can then paste at the end of my
newsgroup article before I submit it to the NNTP server.
Does anybody know of any such available for free download?