Securing digital content system and method

CAFC
  • US 7,421,741 B2
  • Filed: 10/20/2004
  • Issued: 09/02/2008
  • Est. Priority Date: 10/20/2003
  • Status: Expired due to Fees
First Claim
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1. A method of securely delivering data, comprising the steps of:

  • creating a container having electronic content and a container identifier;

    encrypting at least one data block of the electronic content using a symmetric encryption technique and encrypting a header associated with a first data block of the electronic content using an asymmetric encryption technique, the header including a symmetric decryption key; and

    re-keying the header using data associated with a user or a user'"'"'s device to lock at least a portion of the electronic content to the user or the user'"'"'s device,wherein the locked at least a portion of the electronic content can only be decrypted and accessed by the user or on the user'"'"'s device when the user or user'"'"'s device has been authenticated against at least the container identifier.

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