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Signal processing system, recording method, program, recording medium, reproduction device and information processing device

  • US 20050089165A1
  • Filed: 12/26/2003
  • Published: 04/28/2005
  • Est. Priority Date: 01/15/2003
  • Status: Active Grant
First Claim
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1. A signal processing system having a reproducing apparatus for reading information from a recording medium having information unique thereto and an information processing apparatus for mutually authenticating and connecting the reproducing apparatus through a transferring portion, wherein the reproducing apparatus comprises:

  • final encryption key generating means for generating a content information encryption key in accordance with intermediate key information;

    a first transmitting portion for transmitting the intermediate key information to the information processing/apparatus through the transferring portion; and

    a second transmitting portion for transmitting the content information encryption key to the information processing apparatus through the transferring portion, and wherein the information processing apparatus comprises;

    a content information encrypting portion for encrypting content information using the content information encryption key;

    an intermediate key information encrypting portion for encrypting the intermediate key information using key information unique to the recording medium, the key information being generated in accordance with information unique to the recording medium; and

    a recording portion for recording the encrypted content information and the encrypted intermediate key information to the recording medium.

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