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Storage Medium Processing Method, Storage Medium Processing Apparatus, and Program

  • US 20070223705A1
  • Filed: 06/02/2005
  • Published: 09/27/2007
  • Est. Priority Date: 06/28/2004
  • Status: Abandoned Application
First Claim
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1. A storage medium processing method a using a storage medium and a user terminal, wherein the storage medium stores a medium identifier data, a medium unique key data enabled to be generated based on the medium identifier data, an encrypted user key data in which a user key data is encrypted so that it may be decrypted using the medium unique key data, and encrypted content key data in which a content key data is encrypted so that it may be decrypted using the user key data, the user terminal retains an encrypted content data in which content data is encrypted so that it may be decrypted using the content key data, and the user terminal connected to the storage medium is enabled to access to a license center to obtain various kinds of data, the method comprising:

  • a step in which the user terminal requests to the license center an issuance of user key data submitting the medium identifier data;

    a step in which the license center generates, responsive to the request of the user terminal, user key data, the user key data being different depending on types of services which the user terminal wishes to receive and the medium identifier data, and delivers the user key data to the user terminal;

    a step of recording the user key data in a database at the license center; and

    a step of storing the delivered user key data in the storage medium after encrypting it with the medium unique key at the user terminal.

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