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Secure authentication using hardware token and computer fingerprint

  • US 8,065,718 B2
  • Filed: 10/30/2007
  • Issued: 11/22/2011
  • Est. Priority Date: 11/05/2002
  • Status: Active Grant
First Claim
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1. A method of authenticating a hardware token, comprising the steps of:

  • providing a hardware token different from and connectable to a host computer;

    generating in the host computer a host computer fingerprint F based at least in part on a unique characteristic of the host;

    transmitting the host computer fingerprint F to an authorizing device different from the host computer and the hardware token;

    establishing a secure communication mechanism between the hardware token and the authorizing device;

    thereafter generating a random value R in the authorizing device and providing the random value R to the host computer;

    computing in the host computer a challenge R′

    derived at least in part from the host computer fingerprint F and the random value R;

    transmitting the challenge R′

    to the hardware token;

    generating a response X in the hardware token, the response X generated at least in part from the challenge R′

    ; and

    transmitting the response X from the hardware token to the authorizing device to authenticate the hardware token for operation with the host.

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