The “Break it Down” Blog

The BD+ DRM that has been sitting in the attic of the Blu-ray spec has finally been released and ready for prime time. Endadget reports that with the recent AACS exploits, studios have been slow to release new titles as they have been waiting for BD+ to hit.

Aparently BD+ isn’t some static key-checking algorithm but instead a running VM that provides a sandbox for a “validation process” to run in… doing whatever it wants to validate your player and the disk.

As Endadget reports, the DRM cannot change the device it’s playing on, so once the playback is stopped and disk ejected, nothing should be modified on the system… (Sony Rootkit anyone?)

Update #1: Laurence Hartje sends along a link to Ars Technica that takes a much deeper look at how BD+ works.