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Each disc usually contains two or more partitions. Each partition has its own AES key, referred to as a "title key". This key is stored on the disc, inside of a "ticket", but it is encrypted with the master AES key. So, with the master AES key you can decrypt the title keys, and with the title keys you can decrypt the partitions. Lucky for us, the master AES key was extracted by the Tweezer hack.
 
Each disc usually contains two or more partitions. Each partition has its own AES key, referred to as a "title key". This key is stored on the disc, inside of a "ticket", but it is encrypted with the master AES key. So, with the master AES key you can decrypt the title keys, and with the title keys you can decrypt the partitions. Lucky for us, the master AES key was extracted by the Tweezer hack.
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The disc is signed by building SHA-1 hashes of small parts of the disc, then aggregating these hashes into a hierarchical structure, which is finally signed with a asymmetric crypto. This solution is chosen for efficiency, since asymmetric cryptos are extremely slow.
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The disc is signed by building SHA-1 hashes of small parts of the disc, then aggregating these hashes into a hierarchical structure, which is finally signed with an asymmetric crypto. This solution is chosen for efficiency, since asymmetric cryptos are extremely slow.
    
For more details, see [[Wiidisc#Partition_Data|Partition Data info on the Wiidisc page]].
 
For more details, see [[Wiidisc#Partition_Data|Partition Data info on the Wiidisc page]].
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