InaudibleKey: Generic Inaudible Acoustic Signal based Key Agreement Protocol for Mobile Devices

Xu, Weitao, Li, Zhenjiang, Xue, Wanli, Yu, Xiaotong, Wei, Bo, Wang, Jia, Luo, Chengwen, Li, Wei and Zomaya, Albert Y. Zomaya (2021) InaudibleKey: Generic Inaudible Acoustic Signal based Key Agreement Protocol for Mobile Devices. In: IPSN 2021: International Conference on Information Processing in Sensor Networks (IPSN), 18-21 May 2020, Nashville, United States. (In Press)

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Secure Device-to-Device (D2D) communication is becoming increasingly important with the ever-growing number of Internetof-Things (IoT) devices in our daily life. To achieve secure D2D communication, the key agreement between different IoT devices without any prior knowledge is becoming desirable. Although various approaches have been proposed in the literature, they suffer from a number of limitations, such as low key generation rate and short pairing distance. In this paper, we present InaudibleKey, an inaudible acoustic signal based key generation protocol for mobile devices. Based on acoustic channel reciprocity, InaudibleKey exploits the acoustic channel frequency response of two legitimate devices as a common secret to generating keys. InaudibleKey employs several novel technologies to significantly improve its performance. We conduct extensive experiments to evaluate the proposed system in different real environments. Compared to state-of-the-art works, InaudibleKey improves key generation rate by 3-145 times, extends pairing distance by 3.2-44 times, and reduces information reconciliation counts by 2.5 16 times. Security analysis demonstrates that InaudibleKey is resilient to a number of malicious attacks. We also implement InaudibleKey on modern smartphones and resourcelimited IoT devices. Results show that it is energy- efficient and can run on both powerful and resource-limited IoT devices without incurring excessive resource consumption.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Key generation, Mobile devices, Acoustic signal
Subjects: G400 Computer Science
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: John Coen
Date Deposited: 09 Mar 2021 15:48
Last Modified: 09 Mar 2021 16:00

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