A hacker called muslix64 posted instructions on how to crack AACS (Advanced Access Content System) encryption, used on high-definition HD-DVD discs to prevent and illegal copying and bootlegging.

I was not aware of anyone having done that, so I did. Have a look. The AACS copy protection system is realy Unbreakable! The program is a simple implementation of the aacs crypto protocol freely available on the net. No reverse engineering! Stay tuned for source code soon! Merry Christmas everyone! - muslix64

Reuters News Click on HD-DVD AACS Copy Protection

The AACS system was developed by companies including Walt Disney Co., Intel Corp., Microsoft Corp., Toshiba Corp. and Sony Corp. to protect high-definition formats, including Toshiba’s HD-DVD and Sony’s Blu-ray.

Muslix64 posted a video and decryption codes showing how to copy several films, including Warner Bros’ “Full Metal Jacket” and Universal Studios’ “Van Helsing,” on a popular hacker Internet blog and a video-sharing site.

The hacker also promised to post more source code on January 2 that will allow users to copy a wider range of titles. - Reuters