When DVD-Video’s encryption had been broken about 6 years back, the next generation of the Audio CD, DVD-Audio had been delayed for several months. It was originally to use the CSS2 encryption scheme, but the breaking of CSS meant the music industry no longer wanted anything to do with CSS in the new upcoming DVD-Audio format at the time. As a result, DVD-Audio took on Content Protection for Pre-recorded Media (CPPM), a much more advanced copy-protection system, which includes Key Blocks and watermarking and allows revocation (for compromised devices).
It was
not long ago that DVD-Audio playback software came to the PC. For example
Creative’s SoundBlaster Audigy 2 comes with a DVD-Audio as well as
|
Several tools to work with DVD-Audio (read: ripping) They require WinDVD 5, 6 or 7 installed, as they don’t do the decryption themselves, and instead patch WinDVD to output the decrypted stream to disk instead of the sound card. The tools are:
This tool is |
While InterVideo is likely to update its software to
block the use of this patch, it appears that DVD-Audio’s CPPM has been
compromised at least in DVD-Audio discs up until this time or until the keys
used in the current versions of WinDVD that this tool works on are revoked in
upcoming DVD-Audio disc releases. However, this would also mean that
forced to update their software to play future DVD-Audio discs.
Discuss
this in our
target=_new>Audio Forum .
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rental companies, including, IntelliFlix, DVD-Avenue, Netflix and
Blockbuster.
Source: Rarewares
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