Recording/reproducing Device, Communication Device, Program, System Lsi

  • Published: Jul 30, 2008
  • Earliest Priority: Nov 18 2005
  • Family: 8
  • Cited Works: 1
  • Cited by: 4
  • Cites: 0
  • Additional Info:

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A reading unit 8 reads, from a memory card 300, encrypted license information and license management information corresponding thereto. A decryption unit 9 decrypts the encrypted license information, and thereby obtains license information in plain text. An operation execution unit 2 executes an operation based on the license information in plain text. Here, the license management information indicates, for each operation for the content, a type of identifier necessary for decrypting the encrypted license information. The decryption unit 9 decrypts the encrypted license information with use of an identifier corresponding to the operation to be executed, the identifier being selected from among a plurality of types of identifier indicated by the license management information.


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Document History
  • Publication: Jul 30, 2008
  • Application: Nov 17, 2006
    EP EP 06832820 A
  • Priority: Nov 17, 2006
    JP 2006322941 W
  • Priority: Nov 18, 2005
    JP 2005334001 A

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