What's a "real encryptor"?

[Matthew J Ghio]

Karl Lui Barrus <klbarrus at owlnet.rice.edu> wrote:

> The program I described earlier (RSA.tar.Z) is pretty minimal.
> Secret keys are just text, not locked by a hash of a passphrase,
> no "name" information attached.  Public keys are the same: no
> username attached, no web of trust, etc.  The output is in
> binary form, with no headers or checksums or anything.
> PGP has keyrings, this program requires you to keep track of
> seperate public keys on your own.

Does this program exist?  If so where can I get it?