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Method, system, and device for generating, storing, using, and validating tags and data

  • US 9,825,941 B2
  • Filed: 03/06/2014
  • Issued: 11/21/2017
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A smart tag, comprising:

  • data storage configured to store tag data, an address of an authentication service, a cryptographic key, and a changeable data part that is initially stored in the data storage with an initial value and is changed to a new and non-repeated value after each use of the smart tag;

    a Tag Authentication Cryptogram (TAC) module that invokes a cryptographic engine to utilize the cryptographic key and the changeable data part to generate a unique TAC in response to receiving a read request from a reading device; and

    a communication interface that enables the TAC module to transmit the unique TAC along with the tag data and the address of the authentication service to the reading device, wherein the reading device is enabled to validate the smart tag by requesting a signature certificate for the unique TAC from the authentication service prior to the reading device executing one or more instructions contained in the tag data, wherein the authentication service receives the unique TAC from the reading device, validates the unique TAC and subsequently issues the signature certificate to the reading device.

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