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KEY INFORMATION UPDATE RECORDING METHOD AND KEY INFORMATION UPDATE RECORDING APPARATUS
KEY INFORMATION UPDATE RECORDING METHOD AND KEY INFORMATION UPDATE RECORDING APPARATUS
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机译:关键信息更新记录方法和关键信息更新记录装置
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摘要
According to one embodiment, a limited-access object is encrypted using key information, such as Title Key File, to be updated. The encrypted object data is recorded onto a medium such as an optical disc or HDD. The key information update process, including the resetting and re-encryption of key information, and the process of writing the update information obtained as a result of the update process onto the medium are carried out in a batch with or at specific timing.
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