Low-complexity cryptographic techniques for use with radio frequency identification devices
US7532104B2 · kind B2 · utility
246Cited by
8References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jun 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Cryptographic techniques are provided having a complexity level which permits their implementation in inexpensive radio frequency identification (RFID) tags or other RFID devices. In an RFID system comprising one or more RFID devices and at least one reader that communicates with the devices, a plurality of pseudonyms is associated with a given one of the RFID devices. The RFID device transmits different ones of the pseudonyms in response to different reader queries, and an authorized verifier is able to determine that the different transmitted pseudonyms are associated with the same RFID device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.