Method and apparatus for key distribution using near-field communication
US9088552B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2011 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Jul 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method to provision and distribute a traffic key amongst a plurality of radios enables secure communication, for a predetermined group or a predetermined event. Each radio has a controller, a radio transceiver for electromagnetic radio communications, and a near-field transceiver for near-field communications (NFC). The traffic key (or traffic keys) is provisioned locally at one radio and distributed to the remaining radios utilizing the NFC over a non propagating link. The same traffic key is distributed amongst all radios, and additional restrictions may be applied if desired. The same radios can later be re-provisioned for a different group or event. The local provisioning and distribution is highly advantageous for markets that do not require permanent assignment of radios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.