Cryptographic key configuration using physical unclonable function
US11985236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jun 21, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3278
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a method of obtaining a cryptographic key in a chipset (1). An initial configuration message may be generated using a physical unclonable function (hereinafter: PUF) (22) of the chipset (1). Said PUF (22) may generate a predetermined value when using the initial configuration message as input to the PUF (22). The initial configuration message may be transmitted to a client access server (31). An altered configuration message may be received from the client access server (31), wherein the altered configuration message is generated by the client access server (31) based on the initial configuration message. The cryptographic key may be obtained from the PUF (22) using the altered configuration message as input to the PUF (22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.