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Method, apparatus and system for securely providing material to a licensee of the material

  • US 7,299,209 B2
  • Filed: 02/22/2002
  • Issued: 11/20/2007
  • Est. Priority Date: 10/18/2001
  • Status: Expired due to Fees
First Claim
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1. A method for securely providing material to a licensee of the material, comprising:

  • providing a plurality of license keys to a licensee of material;

    providing said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding time periods of said material; and

    providing said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, to said licensee in an Intellectual Property Management and Protection (IPMP) stream provided along with said material.

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