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METHOD AND APPARATUS FOR LIMITING THE ABILITY OF A USER DEVICE TO REPLAY CONTENT

  • US 20070180538A1
  • Filed: 09/14/2006
  • Published: 08/02/2007
  • Est. Priority Date: 02/01/2006
  • Status: Abandoned Application
First Claim
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1. An apparatus in a user device for limiting the ability of the user device to replay protected content, the apparatus comprising:

  • at least a first processor configured to perform an algorithm that limits the ability of the user device to use a low-level key to decrypt protected content, wherein the low-level key is valid until at least one predetermined expiration criteria is met and can be used to decrypt protected content while the key is valid, and wherein the low-level key expires and becomes invalid after the at least one predetermined expiration criteria is met and cannot be used to decrypt protected content while the key is invalid;

    at least a first memory element accessible by the first processor; and

    a decryption component configured to receive a valid low-level key from the first processor and use the valid low-level key to decrypt protected content.

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