Certificate-based encryption and public key infrastructure
US7796751B2 · kind B2 · utility
16Cited by
23References
83Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2008 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Oct 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3265
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital message can be sent from a sender to a recipient in a public-key based cryptosystem comprising an authorizer. The authorizer can be a single entity or comprise a hierarchical or distributed entity. The recipient can decrypt a message from the sender only if the recipient possesses up-to-date authority from the authorizer. Key status queries and key escrow are unnecessary in some embodiments. Other features are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.