University of Oulu

Radek Fujdiak, Petr Blazek, Konstantin Mikhaylov, Lukas Malina, Petr Mlynek, Jiri Misurec, and Vojtech Blazek. 2018. On Track of Sigfox Confidentiality with End-to-End Encryption. In Proceedings of the 13th International Conference on Availability, Reliability and Security (ARES 2018). ACM, New York, NY, USA, Article 19, 6 pages. DOI:

On track of Sigfox confidentiality with end-to-end encryption

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Author: Fujdiak, Radek1; Blazek, Petr1; Mikhaylov, Konstantin2;
Organizations: 1Brno University of Technology, Brno, Czech Republic
2University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.1 MB)
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Language: English
Published: Association for Computing Machinery, 2018
Publish Date: 2019-02-15


The last years brought many novel challenges for the Internet of Things (IoT). Low capital and operational expenditures, massive deployments of devices, reliability and security are among the most crucial ones. The recently introduced Low-power wide area (LPWA) technologies provide one possible way of addressing these challenges. In the current paper, we focus on one of the most mature LPWA technology, namely Sigfox. We provide a brief security assessment of this technology and highlight the main security imperfections. Notably, we also consider the recent changes introduced in the last revision of the Sigfox specification released in the fourth quarter of 2017. Importantly, this paper discusses the highlighted issues and compares three selected cryptographic encryption solutions (AES, ChaCha and OTP) in respect to the main IoT triad of performance, security and cost. We investigate the encryption solutions and characterize their energy consumption in a real-life implementation. The results herein presented are useful for understanding the cost of enabling security aspects and enable selecting the most efficient encryption protocol.

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ISBN Print: 978-1-4503-6448-5
Article number: 19
DOI: 10.1145/3230833.3232805
Conference: International Conference on Availability, Reliability and Security
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: The National Sustainability Program under Grant no. LO1401 and the Czech Ministry of the Interiornder grant no. VI20172019093 financed the research described in this article. For the research, the infrastructure of the SIX Center was used.
Copyright information: © 2018 Association for Computing Machinery.