Establishing secure links between wireless devices in proximity using ambient wireless signals
US8873755B2 · kind B2 · utility
7Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | May 19, 2011 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Wireless devices in proximity are securely paired with one another autonomously by generating a common cryptographic key directly from a time-varying wireless environment shared among the wireless devices. The shared key can be used by the wireless devices to authenticate each wireless device's physical proximity and then to facilitate confidential communication between the wireless devices. The algorithm used to create the shared key is secure against a computationally unbounded adversary and its computational complexity is linear in the size of the shared key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.