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Enhancing the Security of Over-The-Air-Activation of LoRaWAN Using a Hybrid Cryptosystem


Kevin Feichtinger, Yuto Nakano, Kazuhide Fukushima, Shinsaku Kiyomoto


Vol. 18  No. 2  pp. 1-9


The Internet of Things (IoT) pursues the objective to connect daily used devices to the web and support humans in their everyday life. Most IoT devices like sensors and cameras are optimized for low power consumption and sometimes spread over many kilometers, which makes different communication protocols necessary than WiFi or ZigBee. Low Power Wide Area (LPWA) networks organize low-power devices in energy efficient networks while allowing these devices to be spread and move over an enormous geographical area. One of the established communication protocols for long-range communication in LPWANs is LoRaWAN, which is optimized for battery-powered end devices. In this paper, the LoRaWAN join procedures are investigated, and possible threats to joining devices are shown. This paper proposes an extension of the Over-The-Air-Activation join procedure of LoRaWAN to enhance the security of the unencrypted join-request, using a hybrid cryptosystem. Furthermore, this paper considers advantages and disadvantages of possible hardware or software implementations and investigates the current specification of LoRaWAN and the payload size differences of LoRaWAN regional parameters to ensure the feasibility of the proposed extension.


Internet of Things (IoT), Low Power Wide Area Networks (LPWAN), LoraWAN, Over-The-Air-Activation (OTAA), Hybrid Cryptography