Authentication system and device including physical unclonable function and threshold cryptography
US10432409B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jun 6, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3221
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication system and device including physical unclonable function (PUF) and threshold cryptography comprising: a PUF device having a PUF input and a PUF output and constructed to generate, in response to the input of a challenge, an output value characteristic to the PUF and the challenge; and a processor having a processor input that is connected to the PUF output, and having a processor output connected to the PUF input, the processor configured to: control the issuance of challenges to the PUF input via the processor output, receive output from the PUF output, combine multiple received PUF output values each corresponding to a share of a private key or secret, and perform threshold cryptographic operations. The system and device may be configured so that shares are refreshable, and may be configured to perform staggered share refreshing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.