Authentication with physical unclonable functions
US8782396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2008 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Physical Unclonable Functions (PUFs) for authentication can be implemented in a variety of electronic devices including FPGAs, RFIDs, and ASICs. In some implementations, challenge-response pairs corresponding to individual PUFs can be enrolled and used to determine authentication data, which may be managed in a database. Later when a target object with a PUF is intended to be authenticated a set (or subset) of challenges are applied to each PUF device to authenticate it and thus distinguish it from others. In some examples, authentication is achieved without requiring complex cryptography circuitry implemented on the device. Furthermore, an authentication station does not necessarily have to be in communication with an authority holding the authentication data when a particular device is to be authenticated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.