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Method for using a compact disk as a smart key device

  • US 7,908,492 B2
  • Filed: 05/12/2008
  • Issued: 03/15/2011
  • Est. Priority Date: 12/16/2004
  • Status: Active Grant
First Claim
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1. A method for performing cryptographic functions, the method comprising:

  • engaging a removable storage media with a media reading device coupled to a system unit,wherein the system unit includes a hardware security unit and a device driver for controlling the media reading device; and

    wherein the removable storage media contains a first private key corresponding to a first asymmetric cryptographic key pair and a first public key corresponding to a second asymmetric cryptographic key pair, andwherein the hardware security unit contains a second private key corresponding to the second asymmetric cryptographic key pair and a second public key corresponding to the first asymmetric cryptographic key pair;

    performing a mutual authentication operation between the removable storage media and the hardware security unit based upon the first and second asymmetric cryptographic key pairs; and

    in response to successfully performing the mutual authentication operation, enabling the system unit to invoke cryptographic functions on the hardware security unit while the removable storage media remains engaged to the media reading device.

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