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Dynamic key and rule storage protection

  • US 9,501,429 B2
  • Filed: 02/05/2015
  • Issued: 11/22/2016
  • Est. Priority Date: 09/05/2008
  • Status: Expired due to Fees
First Claim
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1. In a media processing device, a method comprising:

  • determining a first cyclical redundancy check (CRC) value from a plurality of rules stored in a rule set memory of the media processing device, each rule of the plurality of rules corresponding to a corresponding cryptographic key stored at the media processing device;

    comparing the first CRC value with a second CRC value corresponding to the plurality of rules; and

    preventing further access to the plurality of rules in the rule set memory in response to determining a mismatch between the first CRC value and the second CRC value.

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