Tag-handle-based authentication of RFID readers
US9792472B1 · kind B1 · utility
40Cited by
10References
20Claims
0Family size
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Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An RFID tag may execute instructions from an authenticated RFID reader. A tag determines a handle and a first parameter, both of which may be random numbers, and sends the handle to a reader. Upon receiving a challenge from the reader, the tag determines and sends a cryptographic response to the challenge based on an algorithm, a tag key, the first parameter, and the challenge. Upon receiving a message with a second parameter and a tag instruction, the tag executes the tag instruction upon verifying that the second parameter derives from the first parameter and the tag handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.