Wireless network security using randomness
US8204224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides systems and methods for securing communications in a wireless network by utilizing the inherent randomness of propagation errors to enable legitimate users to dynamically create a shared symmetric secret key. In one embodiment, the invention provides a system with two computers each having a wireless network adapter. The sending node encodes the frames, transmits the frames, determines if the frames were correctly received, retransmits the frames if they were not correctly received, stores the frames that were not retransmitted, and uses the stored frames to generate a secret key. The receiving node receives the encoded frames, determines if the frames were retransmitted, stores at least one of the frames that was not retransmitted, and uses the stored frames to generate the same secret key as the receiving node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.