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Additional info for AACS Introduction and Common Cryptographic Elements
Table 3-4 – Host Revocation List Entry Bit Byte 0 1 2 3 4 5 6 7 7 6 5 4 3 2 1 0 Range Host ID A Host Revocation List Entry includes: • A 2-byte Range value indicates the range of revoked ID’s starting from the ID contained in the record. A value of zero in the Range field indicates that only one ID is being revoked. • A 6-byte Host ID value identifying the host being revoked. The length of the Host Revocation List Record is always a multiple of four bytes. 3 Drive Revocation List Record Table 3-5 - Drive Revocation List Record Bit Byte 0 1 2 3 4 ...
Bytes 4 through 19 return the 128-bit Media Identifier value. 6. When the logical unit has not established a Bus Key for the authentication process, this command with Format Code = 8216 shall be terminated with CHECK CONDITION Status, 5/6F/02 COPY PROTECTION KEY EXCHANGE FAILURE – KEY NOT ESTABLISHED. 4 MEDIA KEY BLOCK (Format 8316) Table 4-17 – READ DISC STRUCTURE Data Format (With Format Field = 8316) Bit Byte 0 1 2 3 4 : 32,771 7 (msb) 6 5 4 3 DISC STRUCTURE Data Length 2 1 0 (lsb) Reserved Total Packs (msb) MEDIA KEY BLOCK Pack Data (lsb) This Command with this Format Code is used to transfer the Media Key Block (MKB) recorded in the Lead-in Area of a pre-recorded and recordable media that exist in format specific manner.
12+ (N1-1)*8)-1 (12+ (N1-1)*8) … (12+ N1*8)-1 (12+ N1*8) 7 6 5 4 3 2 1 0 Record Type: 2016 Record Length Total Number of Entries Number of Entries in this Signature Block (N1) Drive Revocation List Entry (0) Drive Revocation List Entry (1) ... 91 Page 19 Advanced Access Content System: Introduction and Common Cryptographic Elements A properly formatted Media Key Block contains exactly one Drive Revocation List Record. It follows the Host Revocation List Record, although it may not immediately follow it.