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Data Administration method

  • US 20020059522A1
  • Filed: 03/20/2001
  • Published: 05/16/2002
  • Est. Priority Date: 11/10/2000
  • Status: Active Grant
First Claim
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1. A data administration method, which comprises:

  • preparing a real data section by encrypting digital content to be distributed;

    preparing a header data section provided with symbol information symbol-converted for visual or auditory recognition of attributes of the digital content;

    preparing a consent-information-added header data section in which consent information containing information on a content key used as an encryption key in encrypting the digital content is embedded in the header data section as an electronic watermark; and

    preparing composite data in which the real data section and the consent-information-added header data section are composited, and distributing the composite data.

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