DVD CSS Encryption cracked!


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Protecting Trade Secrets.
Precautions must be taken to protect a trade secret against loss; it is protectable as property of the owner only as long as it remains a secret.

Keller and Heckman LLP on their http://www.khlaw.com/protsec.htm page

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Background info

Note: All this is not about pirating DVDs, but rather about playing them on a platform (Linux) that has been shunned by the DVD consortium. European law explicitly allows reverse engineering when needed for interoperatibility.

Background links (many from Linux Today):

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Legal notice

The software (source as well as binaries) offered on this site can be freely redistributed. It was written by authors who expressly permitted and encourage the redistribution of this software and information. The purpose of this software is not, I repeat not illegal copying of DVD disks. It is meant to provide information neccesary to be able to program a DVD player for Linux. To do this, the CSS system needs to be incorporated in the player. Recently the (very weak) content scrambling system was deciphered, freeing the way for a Linux DVD player. The CSS system is not a copy protection system, since it does not prevent copying of the disk. Writing information about the way a certain protection scheme functions is completely legal. The source code and binaries on this site are completely legal too, since they contain no code from the DVD consortium or one of its members. The sources and programs on this site are purely written by 3rd parties using clean-room reverse engineering methods, which is, again, completely legal. This software and information below make it possible for people who legally obtained their DVD movies to view them on their Linux systems.

The presence of protective measures on this site does not constitute an admission of guilt, but are rather due to the realization that fighting through a suit can become a timeconsuming and expensive undertaking, even if winning eventually. Btw, come to think of it, these protective measure could even fall under the DMCA, so beware if you're a lawyer, and are seeing this site...

freedvd@free-dvd.org.lu