Physically unclonable function device
US12015723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2022 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Apr 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A physically unclonable function (PUF) device comprises a plurality of conductors, at least some of which are arranged so that they interact electrically and/or magnetically with one another. A media surrounds at least a portion of each of the conductors, and circuitry is configured for applying an electrical challenge signal to at least one of the conductors and for receiving an electrical output from at least one of the other conductors to generate an identifying response to the challenge signal that is unique to the device. The media comprises a plurality of interactive regions, the interactive regions having an electrical and/or magnetic response characteristic which is permanently altered in response to a predetermined environmental event, and the identifying response is altered with the response characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.