Windows Vista Content Protection
09-09-2007, 06:49 AM
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Top Cab !!
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Windows Vista Content Protection
God I knew Vista was rubbish but this article provides written by Peter Gutmann the widely respected security developer who has written many crypto systems and protocols, not to mention developed cryptlib is shocking 
its an interesting read if your a closet geek
http://www.cs.auckland.ac.nz/~pgut00...ista_cost.html
It has information such as the following :
Decreased Playback Quality
Alongside the all-or-nothing approach of disabling output, Vista requires that any interface that provides high-quality output degrade the signal quality that passes through it if premium content is present. This is done through a “constrictor” that downgrades the signal to a much lower-quality one, then up-scales it again back to the original spec, but with a significant loss in quality. So if you're using an expensive new LCD display fed from a high-quality DVI signal on your video card and there's protected content present, the picture you're going to see will be, as the spec puts it, “slightly fuzzy”
its an interesting read if your a closet geekhttp://www.cs.auckland.ac.nz/~pgut00...ista_cost.html
It has information such as the following :
Decreased Playback Quality
Alongside the all-or-nothing approach of disabling output, Vista requires that any interface that provides high-quality output degrade the signal quality that passes through it if premium content is present. This is done through a “constrictor” that downgrades the signal to a much lower-quality one, then up-scales it again back to the original spec, but with a significant loss in quality. So if you're using an expensive new LCD display fed from a high-quality DVI signal on your video card and there's protected content present, the picture you're going to see will be, as the spec puts it, “slightly fuzzy”
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