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Counter-based encryption of stored data blocks

  • US 8,635,465 B1
  • Filed: 03/28/2012
  • Issued: 01/21/2014
  • Est. Priority Date: 03/28/2012
  • Status: Active Grant
First Claim
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1. A method comprising the steps of:

  • maintaining counters for respective stored data blocks; and

    encrypting a given one of the data blocks utilizing a value of the data block in combination with a value of its associated counter;

    wherein the maintaining and encrypting steps are performed by a processing device having a processor coupled to a memory; and

    wherein the encrypting step comprises performing a homomorphic encryption operation on the given data block as a function of the value of that data block and the value of its associated counter.

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