Computer Science > Networking and Internet Architecture
[Submitted on 22 Feb 2021 (v1), last revised 26 Mar 2021 (this version, v2)]
Title:InaudibleKey: Generic Inaudible Acoustic Signal based Key Agreement Protocol for Mobile Devices
View PDFAbstract:Secure Device-to-Device (D2D) communication is becoming increasingly important with the ever-growing number of Internet-of-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 resource-limited 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.
Submission history
From: Weitao Xu [view email][v1] Mon, 22 Feb 2021 11:23:50 UTC (4,028 KB)
[v2] Fri, 26 Mar 2021 05:03:00 UTC (3,986 KB)
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