Communication apparatus, communication system, and communication method
US11792023B2 · kind B2 · utility
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3References
2Claims
0Family size
Assignee
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Key dates
| Filing date | May 10, 2019 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Feb 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0823
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A GM acquires a first certificate revocation list designating revoked public key certificates and distributed from a certificate authority server. The GM generates a second certificate revocation list produced by extracting information on a plurality of home electric appliances from the first certificate revocation list. The GM restricts communication with a device for which the public key certificate is revoked, by distributing the second certificate revocation list generated to the plurality of home electric appliances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.