Information processing apparatus and method, content management system
An information processing device and content management technology, applied in the field of information processing devices
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example 1
[0218] Such as Figure 18 The CPS unit-3 681 shown in shows that data 671 generated / obtained later is incorporated into the CPS unit already set in the information recording medium.
[0219] The CPS unit-3 681 contains the data stored in the data area 660 of the information recording medium, and also incorporates the data 671 generated / obtained later therein. In this case, the later generated / obtained data 671 or data included in the later generated / obtained data 671 is encrypted with the unit key Ku3 generated by using the recording seed Vu3 set for the CPS unit 3, and then stored in In an information recording medium or storage unit such as a hard disk.
[0220] In this example, the later generated / obtained data 671 is encrypted with the same key as the unit key of the CPS unit defined in the ROM area of the information recording medium, and when the content is played, the later generated / obtained data 671 Decryption can be performed with the same key as the data contain...
example 2
[0222] Such as Figure 18 As shown in CPS unit-4 682 in , a new CPS unit different from the CPS unit defined in the information recording medium is set for the data 672 generated / obtained later.
[0223] The CPS unit-4 682 is individually defined for the later generated / obtained data 672, and the data contained in the later generated / obtained data 672 is encrypted with the corresponding unit key. The CPS unit-4682 manages independently of the data stored in the information recording medium. In this case, information for assigning CPS units to data 672 generated / obtained later and information for generating unit keys need to be set and recorded as management data.
[0224] Refer below Figure 19 An example of a method for setting content use control information of data generated / obtained later as a method of managing data is described.
[0225] Figure 19 A directory A corresponding to a CPS management unit already stored in the information recording medium 100 and a direct...
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