Abstract
In the past few years, the development of Internet of Things (IoT) has demonstrated a great convenience for human beings’ lives. A well-defined IoT communication protocol assists data transmitted on IoT in a secure and efficient way. The LoRaWAN developed by the LoRa Alliance employs asynchronous communication and three communication modes to control its energy consumption, and utilizes the AES cryptology and two session keys to enhance its communication security. However, the AES encryption process consumes much energy, and the session key also lacks of simple update procedure. To reduce the energy consumed by AES and enhance communication security, in this paper, we design an energy-efficient AES encryption method, named Energy Efficient Data Encryption (E2DE for short) which adopts three low energy design techniques and a simple key update procedure. Simulation is performed by using Synopsys 32 nm cell library with 5 different supply voltages. Experimental results show that average 46.1% energy is reduced when compared to the traditional AES data encryption method. Besides, the session key update procedure can achieve mutual authentication and resist replay and eavesdropping attacks.
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Acknowledgements
The work was supported by the Ministry of Science and Technology, Taiwan, R.O.C. under Grant no. MOST 107-2221-E-029-006. The authors would also like to express thanks to Synopsys Inc. and Dr. Charles Chiang of Synopsys Inc. for donation of “Tunghai University Electronic Design Automation Education” project to enhance the education of electronic design in Tunghai University. Besides, the authors would like to acknowledge software and cell library support provided by Taiwan Semiconductor Research Institute (TSRI), Taiwan, R.O.C.
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Tsai, KL., Leu, FY., Chang, SW., Lin, JY., Luo, HT. (2020). A LoRaWAN Based Energy Efficient Data Encryption Method. In: Barolli, L., Xhafa, F., Hussain, O. (eds) Innovative Mobile and Internet Services in Ubiquitous Computing . IMIS 2019. Advances in Intelligent Systems and Computing, vol 994. Springer, Cham. https://doi.org/10.1007/978-3-030-22263-5_47
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DOI: https://doi.org/10.1007/978-3-030-22263-5_47
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