| 摘要 |
PROBLEM TO BE SOLVED: To reduce a corelation efficiency between RSSIs, the RSSI between a first wireless device as a base station and a second wireless device as a normal station, and the RSSI between the base station and a tapping station, as an evaluation standard of tapping resistance, thereby enhancing the tapping resistance. SOLUTION: In exchange of radio waves between the first wireless device and the second wireless device, a direct wave is removed. Namely, the RSSI is computed by an indirect wave transmitted between the first wireless device and the second wireless device, a secret key is created based on the RSSI. COPYRIGHT: (C)2011,JPO&INPIT
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