Proposed Modification for AACS Bus Encryption

Atsushi Ishihara atsushi.ishihara at
Mon Jun 25 06:45:52 PDT 2007

* From the T10 Reflector (t10 at, posted by:
* atsushi.ishihara at (Atsushi Ishihara)
Dear All,
The proposal is now also available at:
Best Regards,
Atsushi Ishihara, Toshiba
>Date: 2007/06/25 (Mon) 15:39:48		
>From: atsushi.ishihara at (Atsushi Ishihara)	
>To: mtfuji5 at	
>Cc: T10 at	
>Subject: Proposed Modification for AACS Bus Encryption
>Dear All,
>As you may have already known, the AACS group has modified its Bus 
>Encryption specification in response to inputs from the DVD Forum that 
>the Media Seed could be erased by legacy drive and could be set to other 
>value by new drive and therefore could not be persistent. The modified 
>Bus Encryption specification no longer uses the Media Seed and instead 
>uses two Data Keys (Write Data Key and Read Data Key). The modofication 
>of AACS Bus Encryption specification requires related changes in the Mt. 
>Fuji7 specification draft.
>The attached zip file contains proposed modification of Mt. Fuji7 
>specification draft. This is an official proposal from the AACS group. 
>I would like to review it and have a voting for adopting the proposal at 
>the next Mt. Fuji meeting in Colorado Springs.
>I will also upload the proposal to the Mt. Fuji FTP site.
>Best Regards,
>Atsushi Ishihara, Toshiba
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