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METHOD AND SYSTEM FOR STATE MACHINE SECURITY DEVICE

  • US 20130262856A1
  • Filed: 11/20/2012
  • Published: 10/03/2013
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. A method for authenticating a transaction or access via a security device, comprising:

  • communicating an authentication request by the security device to an authentication server;

    receiving by the security device, a sequence of information requests from the authentication server, wherein the authentication server generates the sequence of information requests in response to the authentication request; and

    generating by the security device in response to the received sequence of information requests, a sequence of responses that are sent to the authentication server, wherein the sequence of responses comprise a sequence of reported values;

    whereinthe security device is authenticated by the authentication server based on comparing of the sequence of reported values with a sequence of expected values used by the authentication server in uniquely identifying the security device.

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