Device authentication in a PKI
US7516325B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2002 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Jul 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for establishing a link key between correspondents in a public key cryptographic scheme, one of the correspondents being an authenticating device and the other being an authenticated device. The method also provides a means for mutual authentication of the devices. The authenticating device may be a personalized device, such as a mobile phone, and the authenticated device may be a headset. The method for establishing the link key includes the step of introducing the first correspondent and the second correspondent within a predetermined distance, establishing a key agreement and implementing challenge-response routine for authentication. Advantageously, man-in-the middle attacks are minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.