From: Jeff Davis <eagle@deeptht.armory.com>
Date: Tue, 19 Apr 94 23:41:38 PDT
To: cypher <cypherpunks@toad.com>
Subject: Phase Cancelling Noise (What the heck is this)
Message-ID: <9404192341.aa00062@deeptht.armory.com>
MIME-Version: 1.0
Content-Type: text



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Message-Id: <199404200614.CAA17953@eff.org>
Subject: What the heck is this? Optical noise encryption?

>Anyone know anything about this?  How secure is this? If you have to have
>2 "identical" lasers to pull this off, sounds like this would not be very
>secure, since there must be a pretty wide margin of error (I mean, how
>"identical" can 2 lasers be?)

The noise can be phase cancelled.  Dan Healy did it all the time in '74
with the Wall of Sound double microphone set up for Grateful Dead.  

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-- 
PGP PUBLIC KEY via finger!  JAFEFFM  Speaking & Thinking For Myself!
 
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