XPost: comp.dsp, sci.crypt, sci.electronics.design   
   From: LeonardooftheLarcenousLaugh@thebarattheendoftheuniverse.org   
      
   On Fri, 18 Dec 2009 23:27:05 -0500, "Michael A. Terrell"   
    wrote:   
      
   >   
   >HiggsField wrote:   
   >>   
   >> On Fri, 18 Dec 2009 05:56:55 -0500, "Michael A. Terrell"   
   >>  wrote:   
   >>   
   >> >   
   >> >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?   
   >> >   
   >> >   
   >> >   You do know there were two levels of Videocipher? VC-1 was designed   
   >> >for military applications.   
   >>   
   >>   Total bullshit.  It was designed for backhaul work.  It was also used   
   >> by companies like General Motors, to feed training seminars, etc. to all   
   >> their dealerships.  They were one of the first OTA educational systems of   
   >> that depth.   
   >>   
   >>   ALL the major networks ended up using it, and that is what made GI the   
   >> de facto standard, and is why they were UNsuccessfully sued as a   
   >> monopoly.  Uplink encoding is used by any content provider, and they must   
   >> use GI gear because that is what all the birds use.  So they ARE a   
   >> monopoly, by default, but it is not their fault all the networks went   
   >> with their gear.   
   >>   
   >> > VC-II was a very scaled down version done for   
   >> >HBO in the early '80s.   
   >>   
   >>   VC-I was in use in 1983 and from then on.   
   >>   
   >>   It was retired on the last day of last year, 2008.   
   >>   
   >>   VC-II (1985)"was done for" satellite receivers, uplink encoders and   
   >> decoders, and backhaul work, not just for HBO.  It was retired in 1993 as   
   >> piracy had to be nipped out of the system.  That was VC-II RS and that is   
   >> where the false keys and rolling keys and such came from.  Then came   
   >> DigiCipher and DigiCipher II.   
   >>   
   >> >  I installed one of the first VC-II units for   
   >> >beta testing for HBO at United Video in Cincinnati, Ohio.  That would   
   >> >make it 25 years.   
   >>   
   >>   It appears that you understand basic math.   
   >>   
   >>   VC-II was hardware items for cable system operators, sure, but it was   
   >> ALSO hardware items for use in end user satellite set-top boxes, which   
   >> have nothing to do with cable.   
   >   
   >   
   >  ESD, dimbulb.   
      
     You're a total retard, TurdEl.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)