According to this worthwhile ExtremeTech article, the Blu-ray Disc Association has settled on its plans for incorporating DRM. Snippets:
Both the competing Blu-Ray and HD-DVD formats will use the Advanced Access Content System, which was specifically designed for next-generation optical discs. However, the Blu-Ray group will also secure its discs with ROM Mark, a method to identify authentic Blu-Ray discs, as well as "BD+", which will serve to dynamically update the rights-management schemes in case workarounds or other cracks are discovered and exploited.
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Blu-Ray's content protection scheme consists of three parts: AACS, which will allow or restrict users from using content stored on a Blu-Ray disc in certain ways; ROM Mark, which will shield the disc from counterfeiting rings; and BD+, which will serve as an active defense against player hacks.
As the rights-management wrapper, the AACS system consists of four parts: a definition of the common cryptographic elements to be used in AACS, two parts describing how the AACS cryptography would be applied to read-only and recordable formats; and a fourth part describing how AACS will be used on next-generation formats such as Blu-Ray or HD-DVD.
