Device authentication system and authentication method
US9729332B2 · kind B2 · utility
2Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0823
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An authentication system according to the present disclosure includes a first controller connected to a first server via a first network, a second controller connected to a second server via a second network, and a device. The device compares a next issue date described in a first certificate revocation list acquired from the first controller and an issue date described in a second certificate revocation list acquired from the second controller thereby determining whether the first controller is invalid or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.