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Data security for digital data storage

  • US 20050114659A1
  • Filed: 10/12/2004
  • Published: 05/26/2005
  • Est. Priority Date: 03/26/1999
  • Status: Active Grant
First Claim
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1. A computing apparatus comprising:

  • a digital data storage device;

    a bus-to-bus bridge configured to receive digital data from a host processor and to forward the digital data to the digital data storage device in an encrypted form, wherein the bus-to-bus bridge is configured to encrypt the digital data and forward the digital data to the digital storage device without intervention of the host processor, and wherein the bus-to-bus bridge is configured to selectively enable and disable encryption depending on the target device that is to receive the data that is transmitted via the bus-to-bus bridge;

    a non-volatile memory location in or connected to the logic circuit bus-to-bus bridge which stores an identification code; and

    a key accessed by the logic circuit bus-to-bus bridge to define at least in part an encryption process, wherein the key is derived at least in part from the identification code.

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