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Change of AACS Drive Authentication

Change of AACS Drive Authentication. July 05, 2005. Features Enabled. The new bi-directional drive authentication protocol adds two new features not available in the current one-way protocol Ensure integrity of data items being transmitted from drive to host

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Change of AACS Drive Authentication

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  1. Change of AACS Drive Authentication July 05, 2005

  2. Features Enabled • The new bi-directional drive authentication protocol adds two new features not available in the current one-way protocol • Ensure integrity of data items being transmitted from drive to host • Volume ID, Pre-recorded Media Serial Number, Media ID, and Binding Nonce • Apply revocation information to previously released media • Session key can be used to “bus encrypt” the A/V data which mitigates attacks that rely on distributing Title Keys • The “bus encryption” will be introduced later

  3. Current Spec. Drive Host AGID Challenge Key Volume ID PMSN Media ID Binding Nonce Parameter

  4. New Spec. Drive Host AGID Host Certificate Drive Certificate Drive Key Host Key Bus Key established Volume ID PMSN Media ID Binding Nonce Parameter

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