Date   : Sat, 12 Mar 1983 03:47:00 EST
From   : Jerry E. Pournelle <POURNE@mit-mc.arpa>
Subject: Publik Key Encryption

    I have a Public Key "Trapdoor" crypto system that works fine on
    a Z-80 micro.

    At least it seems to work fine -- I have no way to know how
    secure the code generated really is.

    For those interested:  the public key (mine) is under
    MC:POURNE;PUBLIC kEY and two messages encrypted with it are 
    MC:POURNE;SECRET MSG  (37 words) and
    MC:POURNE;SECRET VITA (1038 words).

       I'll buy dinner for the first person to tell me the
    secret message (not the vita which is obtainable).  I'd be
    intrested in just how secure this stuff is, and what resources
    are needed to break it (if it can be done).

       Best,

       JERRY Pournelle
       (In about 3 months the public key and secret message
    will appear in BYTE, but one presumes that by then someone will
    have cracked it if it is crackable..

    )