Authentication system
US9998445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Aug 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device authentication system for use with an authenticatable device having a physically-unclonable function and constructed to, in response to input, of challenge C, internally generate an output O characteristic to the PUF and the challenge C, and configured to: i) upon receiving challenge C, generate a corresponding commitment value that depends upon a private value r, and ii) upon receiving an authentication query that includes the challenge C and a nonce, return a zero knowledge proof authentication value that corresponds to the commitment value. The system comprises an enrollment server having a working verification set that includes challenge C and corresponding commitment value, wherein: a) the enrollment server is configured to generate an authentication token that corresponds to the authentication value and includes a blinded value depending upon the private value r and a random value decryptable by the authenticatable device; and/or b) the system is configured to pre-process and convey data to the authenticatable device as part of an extended Boyko-Peinado-Venkatesan generation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.