A Lightweight Privacy-Preserving Communication Protocol for Heterogeneous IoT Environment

Xi Luo, Lihua Yin, Chao Li, Chonghua Wang, Fuyang Fang, Chunsheng Zhu, Zhihong Tian
2020 IEEE Access  
While Internet-of-Things (IoT) significantly facilitates the convenience of people's daily life, the lack of security practice raises the risk of privacy-sensitive user data leakage. Securing data transmission among IoT devices is therefore a critical capability of IoT environments such as Intelligent Connected Vehicles, Smart Home, Intelligent City and so forth. However, cryptographic communication scheme is challenged by the limited resource of low-cost IoT devices, even negligible extra CPU
more » ... sage of batterypowered sensors would result in dramatical decrease of the battery life. In this paper, to minimize the resource consumption, we propose a communication protocol involving only the symmetric key-based scheme, which provides ultra-lightweight yet effective encryptions to protect the data transmissions. Symmetric keys generated in this protocol are delegated based on a chaotic system, i.e., Logistic Map, to resist against the key reset and device capture attacks. We semantically model such protocol and analyze the security properties. Moreover, the resource consumption is also evaluated to guarantee runtime efficacy. INDEX TERMS Internet of Things (IoT), key delegation, lightweight protocol, secure communication, symmetric encryption. Hellman Key Exchange (DHKE) algorithm [7] or Elliptic Curve Cryptography (ECC) algorithm [8], which require extensive computation resource. However, only 5% extra CPU usage of battery-powered devices can lead to less than a year of battery life [9]. Symmetric cryptography is a better choice for IoT network due to the negligible depletion, but designing such a 67192 This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/ VOLUME 8, 2020
doi:10.1109/access.2020.2978525 fatcat:l3ov7rirczh2dfomgu6ynsxja4