Security component having physically unclonable function (PUF) and method of operation
US12395358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2020 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A security component (102, 202) for a device (200) is disclosed. The security component comprises a Physically Unclonable Function (PUF) (150) that is operable to accept a plurality of challenges and to generate a corresponding plurality of responses. The security component further comprises control logic (110) configured to generate a challenge for submission to the PUF on the basis of at least one of measurements of components booted on the device or a measurement of a hardware state of the device. The PUF comprises a plurality of sub functions (152), and the challenge determines how the sub functions are used by the PUF to generate a PUF response. Also disclosed is a method (300) for operating a security component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.