XPost: comp.dsp, sci.crypt, sci.electronics.design   
   From: krw@att.bizzzzzzzzzzz   
      
   On Fri, 18 Dec 2009 02:08:44 +0000 (UTC), Rick Jones   
    wrote:   
      
   >In comp.protocols.tcp-ip Mark  wrote:   
   >> > Passing encrypted video over a satellite network built for   
   >> > unencrypted analog video is not a trivial challenge. As far as I   
   >> > know, there exists no scheme to do this that has not been broken   
   >> > already. The problem is that encryption works partly by diffusing   
   >> > information so that no part of the output looks like any part of   
   >> > the input. The satellite link is filled with errors and distortion   
   >> > that have to be contained to retain adequate video quality.   
   >   
   >> um,, is that why General Instrument was able to do it did it 15 years   
   >> ago for HBO?   
   >   
   >Is it "known" that the GI stuff (irony :) isn't cracked?   
      
   I don't believe anyone suggested using civilian encryption for   
   military applications, though it would have been better than nothing.   
      
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