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Systems and methods for secure transaction management and electronic rights protection

  • US 8,533,851 B2
  • Filed: 04/12/2006
  • Issued: 09/10/2013
  • Est. Priority Date: 08/30/1996
  • Status: Expired due to Fees
First Claim
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1. An electronic appliance comprising:

  • a central processing unit;

    a secure processing unit; and

    a computer readable medium storing;

    protected electronic materials comprising protected digital content and an embedded signature; and

    computer readable instructions that, when executed by the secure processing unit, are operable to;

    validate the embedded signature against a current signature of the electronic appliance, the current signature being derived at least in part from information unique to the electronic appliance, the information being hidden by being placed in a secret location, wherein validating the embedded signature comprises matching the embedded signature with the current signature, and wherein the secret location comprises one of;

    disk storage marked as damaged, disk storage that is otherwise reserved as an alternate for sectors marked as damaged, or unused storage in a file maintained by an operating system; and

    deny use of the protected digital content when the embedded signature fails to validate against the current signature of the electronic appliance, wherein the computer readable instructions comprise a plurality of instruction blocks whose execution flow is customized to a layout order of the instruction blocks particular to the electronic appliance.

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