Tim Schmidt wrote:
Myself, being of the opinion that it's physically (and probably
mathematically provably) impossible to keep data secret on the same
machine on which it's viewed, believe that any effort spent on
designing in DRM support will promptly be wasted by someone exercising
their right to access information on their own computers, and the
respective **AA killing the card remotely via BluRay, HD DVD, the
internet, or some other pertinent blacklisting method.  Same as they
can already do for non-compliant BR and HD DVD players, and Windows
Vista drivers.  Correct me if I'm wrong, but I doubt we could be
license compliant without such a remote kill switch.

The "remote kill switch" appears to apply only to receivers probably because there isn't any point in killing transmitters. However, it isn't really a kill switch. If we had a method to play HD-DVD or BR, that method would have to read the list of revoked HDCP receivers on the disk and if our card was connected to one, it would have to break the connection and refuse to transmit to it. At least that is what I have read. I don't understand how this can work since the keys are not exchanged. All that is exchanged is a 40 bit binary number that has 20 bits 1 and 20 bits 0.

--
JRT
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