From: Anonymous <anon@anon.efga.org>
Date: Sat, 18 Oct 1997 11:28:28 +0800
To: cypherpunks@toad.com
Subject: CMR Monkeywrenching Itself
Message-ID: <072072fd628719e4b0d427834ec87b4c@anon.efga.org>
MIME-Version: 1.0
Content-Type: text/plain



a0a1a2a3a4a5a6a7a8a9
b0b1b2b3b4b5b6b7b8b9
...
z0z1z2z3z4z5z6z7z8z9

If you send the above message repeatedly, changing a single character
at a time, in increments (X0a1a2.../aXa1a2...) some interesting things
happen to messages encrypted to two keys, especially if they share a
one-time pad.
These 'interesting things' are wonderful tools for prying open the 
secrets of a foreign key, using what you already know about the key
you are in possession of.

If you happen to be working with an encryption program that unwitting
allows you to access the one-time pad it is using (or to *supply* the
one-time pad it uses), then you can crack secret keys during your lunch
breaks and still have time to complete a level of Doom before it is
time to get back to work.