Abstract
This paper presents a key generation system derived from the channel response of individual subcarrier in orthogonal frequency-division multiplexing (OFDM) systems. Practical aspects of the security were investigated by implementing our key generation scheme on a wireless open-access research platform (WARP), which enables us to obtain channel estimation of individual OFDM subcarriers, a feature not currently available in most commercial wireless interface cards. Channel response of individual OFDM subcarrier is usually a wide sense stationary random process, which allows us to find the optimal probing period and maximize the key generation rate. The implementation requires cross layer design as it involves interaction between physical and MAC layer. We have experimentally verified the feasibility and principles of key generation, and also evaluated the performance of our system in terms of randomness, key generation rate and key disagreement rate, which proves that OFDM subcarrier's channel responses are valid for key generation.
Original language | English |
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Title of host publication | 2015 IEEE Globecom Workshops (GC Wkshps) |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Number of pages | 6 |
ISBN (Print) | 9781467395267 |
DOIs | |
Publication status | Published - Dec 2015 |
Event | IEEE Global Communications Conference 2015 - California, San Diego, United States Duration: 06 Dec 2015 → 10 Dec 2015 http://globecom2015.ieee-globecom.org/ |
Conference
Conference | IEEE Global Communications Conference 2015 |
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Abbreviated title | GLOBECOM 2015 |
Country/Territory | United States |
City | San Diego |
Period | 06/12/2015 → 10/12/2015 |
Internet address |