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System, method and apparatus for distributing digital contents, information processing apparatus and digital content recording medium

  • US 20020062445A1
  • Filed: 11/16/2001
  • Published: 05/23/2002
  • Est. Priority Date: 11/17/2000
  • Status: Abandoned Application
First Claim
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1. A digital content distributing system having a digital content distributing apparatus for distributing a digital content and an information processing apparatus for outputting a digital content distributed from the digital content distributing apparatus, wherein:

  • said digital content distributing apparatus comprises;

    a storage device storing a digital content;

    an encryption processing device for performing an encryption process on a part of the digital content by using encryption key information shared with said information processing apparatus; and

    a distributing device for distributing the partly encrypted digital content to said information processing apparatus, and said information processing apparatus comprises;

    an input device for inputting a digital content distributed from said digital content distributing apparatus;

    a decryption processing device for performing a decryption process on the encrypted part of the inputted digital content by using the encryption key information shared with said digital content distributing apparatus; and

    an output device for outputting the digital content decrypted from the encrypted part, wherein said encryption processing device of said digital content distributing apparatus performs an encryption process, with a formatting unit of the digital content in plaintext taken as one unit, on a part of the units as a subject of encryption processing.

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