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Controlling access to digital content

  • US 8,566,695 B2
  • Filed: 03/30/2007
  • Issued: 10/22/2013
  • Est. Priority Date: 03/30/2007
  • Status: Active Grant
First Claim
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1. A method for controlling access to digital content, comprising:

  • in a storage system with digital content, the digital content stored as a file, performing;

    controlling a throughput rate associated with access to the digital content in the storage system, wherein while the storage system is operationally coupled to an accessing system, the digital content is retrievable by the accessing system at a transmission rate according to the throughput rate, and wherein the throughput rate depends on a bit rate of retrieval of the digital content by the accessing system; and

    performing a cryptographic operation on the digital content by;

    partially performing a cryptographic function on the digital content;

    interrupting the cryptographic function by adding a first delay to the cryptographic operation; and

    resuming the cryptographic function,wherein the cryptographic operation reduces the throughput rate.

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