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System and method for providing conditional access to digital content

  • US 6,865,555 B2
  • Filed: 11/21/2001
  • Issued: 03/08/2005
  • Est. Priority Date: 11/21/2001
  • Status: Expired due to Term
First Claim
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1. A computer-implemented method for providing conditional access to digital content, the method comprising:

  • accessing a verification entity via a persistent network connection;

    establishing a user'"'"'s identity with the verification entity;

    receiving a license including a license key from the verification entity in response to the verification entity having stored a license for the user to view the digital content;

    receiving an encrypted access key from an access key source, the encrypted access key corresponding to a segment of encrypted digital content;

    decrypting the encrypted access key using the license key;

    receiving the segment of encrypted digital content from a content source;

    decrypting the segment of encrypted digital content using the decrypted access key;

    outputting the decrypted segment of digital content to an output device; and

    instructing the verification entity to transfer a sublicense comprising at least a portion of the user'"'"'s license to another person.

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