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RADIO FREQUENCY IDENTIFICATION (RFID) TAG, INTERROGATOR, AND METHOD FOR AUTHENTICATION BETWEEN THE RFID TAG AND THE INTERROGATOR

  • US 20140023195A1
  • Filed: 07/19/2013
  • Published: 01/23/2014
  • Est. Priority Date: 07/23/2012
  • Status: Abandoned Application
First Claim
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1. A radio frequency identification (RFID) tag authentication method performed by an interrogator, the method comprising:

  • transmitting, to an RFID tag, a challenge command comprising random interrogator information for initializing an encryption engine and challenge interrogator information for authenticating the RFID tag;

    receiving, from the RFID tag, random tag information, encrypted challenge tag information, and encrypted tag authentication data;

    initializing the encryption engine based on the random interrogator information and to the random tag information;

    decrypting the encrypted challenge tag information and the encrypted tag authentication data; and

    authenticating the RFID tag based on the decrypted challenge tag information, the decrypted tag authentication data, and the challenge interrogator information.

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