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RFID mutual authentication verification session

  • US RE46,447 E1
  • Filed: 04/03/2014
  • Issued: 06/20/2017
  • Est. Priority Date: 04/17/2006
  • Status: Active Grant
First Claim
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1. A protocol for safeguarding the security of radio frequency identification (RFID) communications between an RFID base station reader and an RFID tag to provide protection against an unauthorized communication, the protocol comprising:

  • conducting by the tag and the base station reader a first process of mutually authenticating the tag and the base station reader as being authorized to participate in a series of transactions, said process of mutually authenticating operating on a first random number generated by the tag, a second random number generated by the reader and a key stored by the tag and the reader; and

    using a second process differing from the first process to separately verify the authenticity of the base station reader before each transaction in the series of transactions wherein the tag determines whether the base station reader is authentic by comparing a base station reader authentication code generated by the base station reader and a tag authentication code generated by the tag, the base station reader authentication code being appended to an unencrypted base station reader message for instructing the tag to perform a tag operationwherein said base station reader authentication code and said tag authentication code are based on said first or second random numbers or said key.

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