Systems and methods for authenticating communications in a network medium
US8156337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2006 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Jun 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Pre-authentication information of devices is used to securely authenticate arbitrary peer-to-peer ad-hoc interactions. In one embodiment, public key cryptography is used in the main wireless link with location-limited channels being initially used to pre-authenticate devices. Use of public keys in the pre-authentication data allows for the broadening of types of media suitable for use as location-limited channels to include, for example, audio and infrared. Also, it allows a range of key exchange protocols which can be authenticated in this manner to include most public-key-based protocols. As a result, a large range of devices, protocols can be used in various applications. Further, an eavesdropper is forced to mount an active attack on the location-limited channel itself in order to access an ad-hoc exchange. However, this results in the discovery of the eavesdropper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.