January 30, 2007

Blue Ray and HD DVD Cracked

Posted at January 30, 2007 01:20 PM in News .

Reports are that Blue Ray and HD DVDs have now been successfully cracked.

From reports on the Internet:

The copy protection technology used by Blu-ray discs has been cracked by the same hacker who broke the DRM technology of rival HD DVD discs last month. The coder known as muslix64 used much the same plain text attack in both cases. By reading a key that is held in the memory of a player playing a HD DVD disc he was able to decrypt the movie being played, and render it as an MPEG 2 file.

The latest Blu-ray hack was performed by muslix64 using a media file provided by Janvitos, through the video resource site Doom9, and applied to a Blu-ray copy of the movie Lord of War. In this case, muslix64 didn't even need access to a Blu-ray player to break through the DRM protection included on this title.

Both HD DVD and Blu-ray use HDCP (High-Bandwidth Digital Content Protection) for playback display authentication and similar implementations of AACS (Advanced Access Content System) for content encryption.

In both these cracking procedures, the hack goes around, rather than defeats, the AACS encryption used as part of the content protection technology used by both next-generation DVD formats. The attempt relies on obtaining a particular movie's unique "key" and cannot be quickly used to rip content across all titles encoded via a particular format, as tools like DVD Decryptor make easy with standard DVD titles. Other forms of normal DVD decryption have been overcome with tools such as RipIt4Me.

muslix64 has however posted a tool which supposedly allows other to try extracting the keys of other Blu-ray Disc movies themselves.

BD+, the second type of content protection on Blu-ray, has yet to be cracked, although currently it is a less used form of the Blue Ray standard. Basically, it's not even being used yet.

Blu-ray and HD DVD both allow for decryption keys to be updated in reaction to attacks, for example by making it impossible to play high-definition movies via playback software known to be weak or flawed. So muslix64 has for the most part started a game between hackers and the entertainment industry, where consumers are likely to face compatibility problems while footing the bill for the entertainment industry's insistence on pushing now flawed DRM technology on an unwilling public. Think about buying a movie and brining it home only to find out that your player must be have its firmware upgraded or the unit replaced entirely. Boo.

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