Method and system for authorizing generation of asymmetric crypto-keys
US7149310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Apr 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3297
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for generating asymmetric crypto-keys usable by network users to transform messages is provided. The system includes a first network station associated with a user, a second network station associated with a trusted entity, and a third network station associated with a sponsor. The trusted entity authorizes the sponsor to generate the asymmetric crypto-key. The sponsor generates a symmetric crypto-key and associated user identification. The sponsor both stores the generated symmetric crypto-key and the associated user identification and transmits the symmetric crypto-key and the associated user identification to the trusted entity. The trusted entity then distributes the symmetric crypto-key and user identification to the user. The user then presents the user identification to the sponsor. The sponsor then generates a challenge and transforms the challenge with the stored symmetric crypto-key. The sponsor transmits the transformed challenge to the user. The user then further transforms the challenge and transmits the further transformed challenge back to the sponsor. In response to receipt of the further transformed challenge, the sponsor then generates the asym…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.