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Backup management apparatus, backup management method, computer program, recording medium, integrated circuit, and backup system
Backup management apparatus, backup management method, computer program, recording medium, integrated circuit, and backup system
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机译:备份管理装置,备份管理方法,计算机程序,记录介质,集成电路和备份系统
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摘要
To provide a backup management device that deletes a content so as to be restorable in the future while protecting a copyright of the content, in a case where there exists a backup of the content. In an HD recorder 100, a first information storage unit 102 stores a content, a second information storage unit 103 stores a backup of the content, a secure storage unit 104 stores a hash value of the content. If receiving an instruction to delete the content so as to be restorable, a control unit 113 deletes the content from the first information storage unit 102. When the content is played back, an encryption processing unit 109 applies a calculation to the content to generate detection information, and the control unit 113 compares the hash value with the detection information to judge whether the content has been tampered.
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