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A fragment of the DeCSS code, which can be used by a computer to circumvent a DVD's copy protection. DeCSS is one of the first free computer programs capable of decrypting content on a commercially produced DVD video disc. Before the release of DeCSS, free and open source operating systems (such as BSD and Linux) could not play encrypted video ...
libdvdcss (or libdvdcss2 in some repositories) is a free and open-source software library for accessing and unscrambling DVDs encrypted with the Content Scramble System (CSS). libdvdcss is part of the VideoLAN project and is used by VLC media player and other DVD player software packages, such as Ogle, xine-based players, and MPlayer.
In order to decrypt a DVD-Video, the player reads the disc-key-block and uses its player-key to decrypt the disc-key. Thereafter, the player reads the title-keys and decrypts them with the disc-key. A different title-key can be assigned for the Video Manager and for each Video Title Set. The title-keys are used to decrypt the encrypted Packs. [5]
Commercial HD DVDs and Blu-ray discs integrate copy protection technology specified by the AACS LA. There are several interlocking encryption mechanisms, such that cracking one part of the system does not necessarily crack other parts. Therefore, the "09 F9" key is only one of many parts that are needed to play a disc on an unlicensed player.
Region-free players are DVD players shipped without the ability to enforce regional lockout (usually by means of a chip that ignores any region coding), or without this flag set. However, if the player is not region-free, it can often be unlocked with an unlock code entered via the remote control .
Avoid these common, easy-to-crack passwords...unless you want to end up as the victim of a hacker. The post These Are the Passwords That Hackers Will Guess First appeared first on Reader's Digest.
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 ...
The BD+ virtual machine embedded in authorized players will execute programs included in Blu-ray discs, allowing to verify the player's keys, transform the output so that content is unscrambled, and/or execute native code to patch the system against vulnerabilities. Based on concept of self-protecting digital content. ROM-Mark