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himddownload-keystuff [2010/07/06 16:30] megadiscmanhimddownload-keystuff [2011/09/04 14:07] (current) – [MAC list authentication] - fixed offset of MCLIST body megadiscman
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 $ echo $head  | xxd -r -p | retailmac $headkey | xxd -p $ echo $head  | xxd -r -p | retailmac $headkey | xxd -p
 1d3dd1a65b26d1f2 1d3dd1a65b26d1f2
-$ # the second half of the ICV is the retail MAC over the MCLIST body (bytes 0x60..0x7d5f)+$ # the second half of the ICV is the retail MAC over the MCLIST body (bytes 0x70..0x7d6f)
 $ # using bodykey. $ # using bodykey.
 </code> </code>
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 </code> </code>
  
-===== Track MAC ===== +===== Track encryption ===== 
-added later.+The track key-encryption-key (KEK) is stored encrypted by the EKB root key 
 + 
 +<code> 
 +$ rootkey1_12=f51ecb2a808f15fd542ef5123bcdbca4 
 +$ # calculate track key-encryption-key 
 +$ enctrackkey=d7c9cadc12b9ad99 
 +$ trackkey=`echo $enctrackkey | xxd -r -p | openssl enc -d -des-ede -iv 0 -K $rootkey1_12 -nopad | xxd -p` 
 +$ echo $trackkey 
 +3e8ab6c3c32c35eb 
 +$ # calculate MAC 
 +$ contentid=010f50000004000000b792f6f9318c20fff1aad8 
 +$ trkentry="0001010000000000 $contentid 0000000000000000 01004400" 
 +$ mackey=`echo 0000000000000000 | xxd -r -p | openssl enc -des -iv 0 -K $trackkey -nopad | xxd -p` 
 +$ echo $trkentry | xxd -r -p | openssl enc -des-cbc -iv 0 -K $mackey -nopad | tail -c 8  | xxd -p 
 +8f35336c5818d22b 
 +</code> 
himddownload-keystuff.1278433818.txt.gz · Last modified: 2010/07/06 16:30 by megadiscman

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