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From: asylvain@felix.UUCP (Alvin "the Chipmunk" Sylvain)
Newsgroups: comp.society.futures
Subject: Re: a Hidden Prodigy
Message-ID: <154320@felix.UUCP>
Date: 29 Nov 90 03:43:16 GMT
References: <'4&^6&|@rpi.edu> <4034.2747f1e2@cc.helsinki.fi>
Sender: daemon@felix.UUCP
Reply-To: asylvain@felix.UUCP (Alvin "the Chipmunk" Sylvain)
Organization: FileNet Corp., Costa Mesa, CA
Lines: 28

In article <4034.2747f1e2@cc.helsinki.fi> sorsa@cc.helsinki.fi writes:
> 
> Anyone familiar with data encryption knows a message can be crypted so that
> it's practically impossible ( even for the FBI ) to decrypt them without the
> key. Of course, there's still the problem of how the key(s) are kept secret - 
> would you keep your keycode in a piece of paper in your wallet or on your PC's
> hard disk ? Wouldn't be surprised if a similar "computer crimes" shoul arise
> against "protected" BBS's as there are now against computer systems.

The best way to keep keys secret is to communicate them privately.  The
best way to do this and continuously change the keys is to arrange
(privately) to use some information that both parties have access to.

For example, both parties can get a copy of the nationwide 800
directory.  That's a perfectly natural thing to have lying about the
house.  Agree in advance that every third odd day, we change to the page
number equal to this page plus the day of the week.  Then go down to the
line equal to the day of the month.

Anytime we happen to meet again privately, we change it to something
else.  (Oops, the FBI surgically implanted a microphone in your larynx
without your knowledge!  There goes that idea!)
--
asylvain@felix.UUCP (Alvin "the Chipmunk" Sylvain)
========================= Opinions are Mine, Typos belong to /usr/ucb/vi
"We're sorry, but the reality you have dialed is no longer in service.
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