AACS Decryption Code Released

[David Farber <dave () farber net>]

Begin forwarded message:

From: Monty Solomon <monty () roscom com>
Date: January 24, 2007 10:13:14 PM EST
To: undisclosed-recipient:;
Subject: AACS Decryption Code Released


AACS Decryption Code Released
Monday January 8, 2007 by Ed Felten

Decryption software for AACS, the scheme used to encrypt content on
both next-gen DVD systems (HD-DVD and Blu-ray), was released recently
by an anonymous programmer called Muslix. His software, called
BackupHDDVD, is now available online. As shipped, it can decrypt
HD-DVDs (according to its author), but it could easily be adapted to
decrypt Blu-ray discs.

Commentary has been all over the map, with some calling this a
non-event and others seeing the death of AACS. Alex Halderman and I
have been thinking about this question, and we believe the right view
is that the software isn't a big deal by itself, but it is the first
step in the meltdown of AACS. We'll explain why in a series of blog
posts over the next several days.

Today I'll explain how the existing technology works: how AACS
encrypts the content on a disc, and what the BackupHDDVD software
does.

...

http://www.freedom-to-tinker.com/?p=1104



AACS: Extracting and Using Keys
http://www.freedom-to-tinker.com/?p=1106

AACS: Blacklisting, Oracles, and Traitor Tracing
http://www.freedom-to-tinker.com/?p=1107

AACS: Game Theory of Blacklisting
http://www.freedom-to-tinker.com/?p=1108

AACS: Title Keys Start Leaking
http://www.freedom-to-tinker.com/?p=1109

AACS: Sequence Keys and Tracing
http://www.freedom-to-tinker.com/?p=1110

AACS: Modeling the Battle
http://www.freedom-to-tinker.com/?p=1111



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