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The Content Scramble System (CSS) is a digital rights management (DRM) and encryption system employed on many commercially produced DVD-Video discs. CSS utilizes a proprietary 40-bit stream cipher algorithm. The system was introduced around 1996 and was first compromised in 1999. [1]
The DVD Copy Control Association (DVD CCA) is an organization primarily responsible for the copy protection of DVDs. The Content Scramble System (CSS) was devised for this purpose to make copyright infringement difficult, but also presents obstacles to some legitimate uses of the media.
DVD CCA's alleged trade secret was its "content scramble system" (CSS). The case was first heard in the Superior Court of California in Santa Clara County. The court initially found CSS to be a reasonably guarded trade secret and that its trade secret status should not be destroyed simply because it was posted on the Internet. The preliminary ...
CD/DVD copy protection is a blanket term for various methods of copy protection for CDs and DVDs. Such methods include DRM, CD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the CD, physical errors and bad sectors. Many protection schemes rely on breaking compliance with CD and DVD standards, leading to playback ...
Xbox (DVD) Two sets of media descriptors are used. Initially, and on typical DVD-ROM drives, only a short partition containing a brief DVD Video can be seen. The lead-out section of the disk stores a second set of media descriptors describing the bounds of the main partition. It also contains a partially-encrypted "security sector" used for ...
ARccOS (Advanced Regional Copy Control Operating Solution) is a copy-protection system made by Sony that is used on some DVDs.Designed as an additional layer to be used in conjunction with Content Scramble System (CSS), the system deliberately creates corrupted sectors on the DVD, which cause copying software to produce errors (see bad sector).
Qflix is a proprietary technology developed and licensed by Sonic Solutions and Pioneer Corporation to add CSS copy protection/DRM to recordable DVD-R media.. Qflix is an implementation of the DVD Forum's DVD-Download specification, including extensions to the optical drive command set defined by the Mt. Fuji group of the IT industry.
The court found that, because 321 Studios' DVD copying software circumvented CSS, a technological protection measure that effectively controls the copying of DVDs, because the software had only limited commercially significant purpose or use other than to circumvent CSS, and because it was marketed for use in circumventing CSS, the court would ...