XPost: comp.dsp, sci.crypt, sci.electronics.design   
   From: krw@att.bizzzzzzzzzzz   
      
   On Fri, 18 Dec 2009 23:19:43 +0000, Andrew Swallow   
    wrote:   
      
   >krw wrote:   
   >> 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.   
   >   
   >AES encryption would have probably beaten the Taliban and the Iranians.   
   >Available in a single chip, or you can use software.   
      
   Real encryption is pretty cheap.  The only complication anymore is key   
   management.  No matter what you do that's a problem, so might just as   
   well make the encryption good.  Rag heads aren't the only potential   
   enemy.   
      
   --- SoupGate-Win32 v1.05   
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