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From: olsen@ll-xn.ARPA (Jim Olsen)
Newsgroups: net.video
Subject: Re: Satellite scrambling
Message-ID: <285@ll-xn.ARPA>
Date: Thu, 13-Mar-86 22:55:51 EST
Article-I.D.: ll-xn.285
Posted: Thu Mar 13 22:55:51 1986
Date-Received: Sat, 15-Mar-86 04:12:01 EST
References: <365@tikal.UUCP>
Distribution: na
Organization: MIT Lincoln Laboratory, Lexington, MA
Lines: 10
Keywords: Videocypher II, MA/COMM, satellite, scramble
Summary: The audio encoding is quite secure

>  [Disscussing the "BLACK BOX" descrambler.]
>    ...THE AUDIO IS STILL SCRAMBLED. BLACK BOX claims that by 
> late March they will have the audio solution worked out...

Fat chance.  The Videocypher II uses a quite simple method for scrambling the
video signal, but the audio is encoded by the DES encryption method, with the
encryption key being changed very frequently.  The audio encoding will remain
secure for quite a while (until someone steals the keylists from M/A-COM).
-- 
Jim Olsen   ARPA:olsen@ll-xn   UUCP:{decvax,lll-crg,seismo}!ll-xn!olsen