ChirpKey : A Chirp-level Information-based Key Generation Scheme for LoRa Networks via Perturbed Compressed Sensing

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

2 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationIEEE INFOCOM 2023 - IEEE Conference on Computer Communications
PublisherIEEE
Number of pages10
ISBN (Electronic)979-8-3503-3414-2
ISBN (Print)979-8-3503-3415-9
Publication statusPublished - 2023

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X
ISSN (Electronic)2641-9874

Conference

Title42nd IEEE International Conference on Computer Communications (IEEE INFOCOM 2023)
LocationHybrid
PlaceUnited States
CityNew York City
Period17 - 20 May 2023

Abstract

Physical-layer key generation is promising in establishing a pair of cryptographic keys for emerging LoRa networks. However, existing key generation systems may perform poorly since the channel reciprocity is critically impaired due to low data rate and long range in LoRa networks. To bridge this gap, this paper proposes a novel key generation system for LoRa networks, named ChirpKey. We reveal that the underlying limitations are coarse-grained channel measurement and inefficient quantization process. To enable fine-grained channel information, we propose a novel LoRa-specific channel measurement method that essentially analyzes the chirp-level changes in LoRa packets. Additionally, we propose a LoRa channel state estimation algorithm to eliminate the effect of asynchronous channel sampling. Instead of using quantization process, we propose a novel perturbed compressed sensing based key delivery method to achieve a high level of robustness and security. Evaluation in different real-world environments shows that ChirpKey improves the key matching rate by 11.03–26.58% and key generation rate by 27–49× compared with the state-of-the-arts. Security analysis demonstrates that ChirpKey is secure against several common attacks. Moreover, we implement a ChirpKey prototype and demonstrate that it can be executed in 0.2 s. © 2023 IEEE.

Research Area(s)

  • Physical-layer key generation, LoRa, Compressed sensing

Citation Format(s)

ChirpKey: A Chirp-level Information-based Key Generation Scheme for LoRa Networks via Perturbed Compressed Sensing. / Yang, Huanqi; Sun, Zehua; Liu, Hongbo et al.
IEEE INFOCOM 2023 - IEEE Conference on Computer Communications. IEEE, 2023. (Proceedings - IEEE INFOCOM).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review