Use of physical unclonable functions to prevent counterfeiting of industrial control products
US11889002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Apr 2, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/24167
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for authenticating industrial devices in an industrial automation environment are disclosed herein. In at least one implementation, a physical unclonable function response of an industrial device is extracted. The industrial device transmits a security certificate signed by a certificate authority that includes a device public key to a system, wherein the system validates the security certificate, encrypts an authentication challenge using the device public key, and transmits the authentication challenge to the industrial device. The industrial device generates a device private key using the physical unclonable function response and decrypts the authentication challenge using the device private key. The industrial device generates an authentication response based on the authentication challenge, encrypts the authentication response using the device private key, and transmits the authentication response to the system, wherein the system decrypts the authentication response using the device public key and authenticates the industrial device based on the authentication response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.