RFID tag and reader authentication by trusted authority
US8866594B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Sep 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Radio Frequency Identification (RFID) reader containing a reader key authenticates an RFID tag containing a tag key by receiving a reader challenge from a verification authority; determining a reader response based at least on the reader challenge and the reader key; sending a first message including at least the reader response but not the reader key to the verification authority; 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 the verification authority; and receiving an electronically-signed reply from the verification authority. The reader validates the verification authority reply by checking the signature. The verification authority may notify a designated party if a response is incorrect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.