Naslov
Extracting Secret Key from Channel Measurements in Wireless Sensor Networks

Autori
Perković, Toni ; Begušić, Dinko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the SoftCOM 2009 (International Conference on Software, Telecommunication and Computer Networks), co-sponsored by the IEEE Computer Society (IEEE-CS) / - , 2009

Skup
International Conference on Software, Telecommunication and Computer Networks - (SoftCOM'09), co-sponsored by the IEEE Computer Society (IEEE-CS), 2009

Mjesto i datum
Korčula, Hrvatska; Hvar, Hrvatska; Split, Hrvatska, 24.09.2009. - 26.09.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Wireless security; Key establishment

Sažetak
The key feature for secure communication relies in the establishment of cryptographic keys. However, low processing devices like sensor nodes are unable to perform a good random number generator used for the key generation, neither are able to perform complex public key based operations. To address this problem, we consider using the measurements of per-packet signal to generate secret keys. Our generator uses the received packet strength from the other device as one of the sources of randomness. Moreover, we propose to use a bidirectional synchronized transmission of constant bit rate (CBR) between two parties, such that one device stands on the surface, while the other device randomly moves around it. The source of randomness results from the per-packet power received by each device. We also show that is impossible for a third party, which is not located at any of the transceivers' positions or near the standing device, to extract any information from the per-packet signal strength measurement generated by any device. Finally, we present the simulation results of our solution in network simulator NS-2.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

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