Title: Information processing device, information processing method, and computer program
Application Number: 200580021318 Application Date: 2005.07.07
Publication Number: 1977249 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06F12/14;G09C1/00;G11B20/10;H04L9/32
Applicant(s) Name: Sony Corp. Address:
Inventor(s) Name: Kitani Satoshi;Muramatsu Katsumi
Attorney & Agent: litian jiang
Abstract:
    A structure for preventing information leakage and content false processing during content utilization involving data transfer between different devices. During content reproduction or recording involving data transfer between different device such as a drive and a host, a medium ID (disk ID) used for encrypting or decrypting a content is read out of a medium, and the drive checks if the medium ID is recorded according to a header code preset for the authenticated medium. If it is confirmed that the medium is an authenticated one, the drive encrypts the medium ID and output it to a host. With this, leakage to the outside of a medium ID and reproduction or recording of a content using a false medium can be prevented.
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