Cryptography Research wants piracy speed bump on HD DVDs

Taral taral at taral.net
Wed Dec 15 12:54:56 EST 2004


On Wed, Dec 15, 2004 at 09:29:46AM -0500, R.A. Hettinga wrote:
> The virtual machine players create movie outputs that are artistically
> identical but each one is altered if some minor way. This alteration is
> just the changing of a few bits of data every few seconds, so every 50
> frames or so. And the CR system works such that if ten separate players are
> used in collusion in a copying process, taking samples of frames from each,
> it will not only identify one of the players, but all of them and they can
> be revoked from all future content.

What stops someone using 3 players and majority voting on frame data
bits?

-- 
Taral <taral at taral.net>
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A: Because it fouls the order in which people normally read text.
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A: Top-posting.
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