| Summary: | Long range (LoRa) technology is a wireless communication technology, which may provide low-power, low-rate, and LoRa communication. It may widely be used into many applications, such as smart metering and factory monitoring. However, some features of LoRa technology also bring new security weaknesses. Therefore, we propose an improved session key management to secure the meter-reading system based on LoRa technology. In our proposed scheme, we add a trusted key distribution server for the related devices to generate their session keys and manage all the keys, where the symmetric session keys are used to protect the communication data between the servers and the terminal devices. In addition, in order to maintain the long-term security of the proposed meter reading system, our proposed lightweight key management scheme can update the session keys automatically and remotely. Finally, we make analysis and experiments to evaluate our proposed key management scheme for the meter-reading system, the related results show our proposed scheme is secure and effective.
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