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Cards, devices, systems, methods and dynamic security codes

  • US 9,033,218 B1
  • Filed: 05/14/2013
  • Issued: 05/19/2015
  • Est. Priority Date: 05/15/2012
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving, by a communication interface, a random object, a dynamic code and an identifier;

    obtaining a function determination object using the identifier;

    determining a function using the function determination object;

    determining, by a processor of a device, a verification code using the function and the random object; and

    comparing the verification code to the dynamic code,wherein the determining a function includes obtaining a plurality of base variables, a plurality of exponents based on the function determination object, and at least one operator based on the function determination object and a look-up-table (LUT), and using the base variables, exponents and at least one operator to determine the function, andthe determining a verification code includes replacing the base variables with values based on the random object.

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