AACS cracked again: WinDVD key found
02/25/2007 16:38
AACS
has already been compromised in at least two widely
known ways, after DRM hackers posted on the Doom9
forums methods to retrieve and utilize volume, and
later, processing keys to copy every Blu-ray and HD
DVD movie released so far. Today a third method has
appeared, as poster ATARI Vampire reports they were
able to find the "sub device key" of the WinDVD
8
playback software. That key identifies the player and
allows it to decode AACS protected titles. You might
remember the software was also the victim of a simple
"print screen" attack several months ago that was
quickly patched. The method used to find it was based
on arnezami's previous approach of watching memory
dumps and finding it through a "bottom up" approach.
Coming on the heels of the cracks already widely
available, this doesn't really affect the current
state of easily copied high def movies, but could
make disabling the vulnerable player from playing
future releases, finding the hole and preventing it
from being hacked again, that much more difficult.
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