Garbled circuit for device authentication
US11245680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Feb 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This application describes systems and methods for using a garbled circuit and a physical unclonable function (PUF) value to authenticate a device. During enrollment, the device and at least one computer collaboratively construct multiple garbled circuits corresponding to bits of an enrollment PUF value generated by PUF circuitry coupled to the device. During authentication, the device and at least one computer evaluate the multiple garbled circuits using an authentication PUF value. Using the results of this evaluation, the at least one computer compares the enrollment PUF value with the authentication PUF value and determines a distance between them. The at least one computer may authenticate the device when the calculated distance is less than a threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.