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Apparatus and method for reproducing user data

  • US 7,178,038 B2
  • Filed: 07/16/2002
  • Issued: 02/13/2007
  • Est. Priority Date: 07/19/2001
  • Status: Active Grant
First Claim
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1. An apparatus for reproducing user data stored in encrypted form on a recording medium, said apparatus comprising:

  • means for reading user data and key data from said recording medium;

    an integrated unit including means for calculating a decryption key using said key data, means for decrypting user data read from said recording medium using said calculated decryption key, and means for re-encrypting said decrypted data using a re-encryption key;

    means for transmitting said re-encrypted data from said integrated unit to an application unit; and

    an application unit for decrypting said re-encrypted data using said re-encryption key, and for reproducing the decrypted data.

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