Device security with physically unclonable functions
US12141786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Aug 25, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
An electronic device may include a printed circuit board having a physically unclonable function (PUF) source. The electronic device may also include processing circuitry positioned on the printed circuit board. The PUF source includes a plurality of traces and each trace includes a first portion and a second portion having an increased surface area relative to the first portion. The PUF source is responsive to an input from the processing circuitry to provide PUF data based on the impedance characteristics of the plurality of traces. The processing circuitry is further configured to process the PUF data from the PUF source to perform an operation within the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.