Device security with physically unclonable functions
US11386419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2020 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Aug 21, 2040 |
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 an integrated circuit (IC) chip positioned on the printed circuit board, and the first PUF source may be embedded in or formed on the printed circuit board external to the IC chip. The IC chip has processing circuitry that is configured to determine PUF data based on the PUF source. The processing circuitry is further configured to determine a cryptographic key or authentication token based on the PUF data and to perform at least one secure operation using the cryptographic key or authentication token.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.