From:	Duke Diener <DukeDragon@***.COM>
Subject:	Re: Easy Unbreakable Encryption!
Date:	Wed, 21 Jun 1995 10:08:35 -0400

fredrik.lindblom wrote:

>In SR the question is: Has the encryption algorithms advanced at the same
>pace as the computers?

I've read of an unbreakable encryption method available today. You connect
the two sites via a fiberoptic cable and send a series of photons through a
prism into the cable. Each photon has a 50% chance of pasing throug the
prism to be sent to the other end. Each photon is phased so that if there
were an attempt to intercept the photon either the phase would shift or the
interceptor would have only a 50% chance of guessing the correct phase
direction. The receiving end then communicates back to the sender using the
pattern that it just received (There is a chance that the receiver would
interpret the information incorectly) When the sender and receiver agree on
the pattern it is used to send the data back and forth. If someone attempts
to intercept the information it would change the phasing and be immediately
detectable, and if they could "see" the packets of information they would not
know the encryption algorythm because it is truely random and different each
time. This of course would not work over radios but should give you some
idea of just how hard it would be to break 205X encryption. And of course
there is always a Nmonic carrier (Johnny Nmonic the movie).

Duke (Rogue Dragon)