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CONTENT PROTECTION INTEROPERABILITY INFRASTRUCTURE

  • US 20080086757A1
  • Filed: 10/09/2006
  • Published: 04/10/2008
  • Est. Priority Date: 10/09/2006
  • Status: Active Grant
First Claim
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1. A method of generating a protected content item for processing by a plurality of computing devices, said protected content item containing at least one protected resource, said method comprising:

  • defining one or more operations that a computing device is authorized to perform on a resource;

    defining a first content protection scheme for permitting authorized operations and for preventing unauthorized operations;

    generating a first encrypted resource by encoding the resource as a function of the first content protection scheme;

    providing, in a descriptor, information associated with the one or more operations authorized to be performed on the resource;

    identifying the first content protection scheme in the descriptor; and

    generating a protected content item containing the first encrypted resource and the descriptor.

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