RFID tag and reader authentication by trusted authority

摘要

A Radio Frequency Identification (RFID) reader containing a reader key authenticates an RFID tag containing a tag key by receiving a tag identifier from the tag; challenging the tag with a tag challenge; receiving a tag response based at least on the tag challenge and the tag key but not including the tag key; sending a second message including at least the tag identifier and the tag response to a verification authority; and receiving a reply from the verification authority. The reader and the verification authority may mutually authenticate each other before, during, or after the tag authentication process. The verification authority may notify a designated party if a response is incorrect.

主权项

1. A Radio Frequency Identification (RFID) reader comprising:
a memory; and a processor block coupled to the memory and configured to:
receive a first tag identifier from a first tag containing a tag key;challenge the first tag with a tag challenge:receive a first tag response based at least on the tag challenge and the tag key;store the first tag response in the memory; andstore a second tag response from a second tag in the memory before sending a first message including at least the first tag identifier and the first tag response to a verification authority.