Apparatus and method for generating secret key using change in wireless channel on wireless communication network
US9042544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2012 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Apr 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0875
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A secret key generation apparatus and method are provided. The secret key generation apparatus includes at least one antenna, amplification/phase controllers, a transceiver, and a random signal controller. The antenna receives a wireless signal from a counterpart terminal that performs wireless communication. The amplification/phase controllers control the amplification gain and phase of the wireless signal that is received via at least one antenna. The transceiver measures the status of a wireless channel using the wireless signal having the controlled amplification gain and phase, determines parameters based on results of the measurement, and generates a secret key based on results of the determination. The random signal controller controls the amplification/phase controllers so that the amplification gain and phase are adjusted whenever the transceiver generates a secret key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.