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Wireless Communications and Mobile Computing

Physical Layer Security for Internet of Things

Ning Zhang, Dajiang Chen, Feng Ye, Tong-Xing Zheng, Zhiqing Wei

Published Apr 18, 2019• 6 citations
Publisher
DOI
10.1155/2019/2627938

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In this chapter, the physical layer security (PLS) is interrogated for Internet of things (IoT) networks. As a result of their nature, IoT networks consist of a massive number of devices. These devices are produced in compact sizes and powered with small batteries rather than a grid network. Thus, they are able to have high portability but have low computational capability. Because of these features of IoT devices, the conventional encryption/decryption-based cryptographic security methods used in the classical wireless devices fail to satisfy the security requirements of IoT networks. The main reason for this is that the requirements of these security methods are too demanding for the processing power of IoT devices and stringent to manage when these devices are deployed in a massive number. Therefore, in this chapter, the possible advantages of the PLS in IoT networks are explained. In this manner, the IoT architecture is explained and common attack types in IoT networks are reviewed. Then, the unique features of IoT networks from the PLS perspective are presented along with the possible challenges on the way. A literature review is conducted to propound the current PLS techniques used in IoT networks and the future directions are signified. As a result of this chapter, it is expected that PLS techniques in IoT networks are clarified to the reader and their future applications are encouraged.

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In this chapter, the physical layer security (PLS) is interrogated for Internet of things (IoT) networks. As a result of their nature, IoT networks consist of a massive number of devices. These devices are produced in compact sizes and powered with small batteries rather than a grid network. Thus, they are able to have high portability but have low computational capability. Because of these features of IoT devices, the conventional encryption/decryption-based cryptographic security methods used in the classical wireless devices fail to satisfy the security requirements of IoT networks. The main reason for this is that the requirements of these security methods are too demanding for the processing power of IoT devices and stringent to manage when these devices are deployed in a massive number. Therefore, in this chapter, the possible advantages of the PLS in IoT networks are explained. In this manner, the IoT architecture is explained and common attack types in IoT networks are reviewed. Then, the unique features of IoT networks from the PLS perspective are presented along with the possible challenges on the way. A literature review is conducted to propound the current PLS techniques used in IoT networks and the future directions are signified. As a result of this chapter, it is expected that PLS techniques in IoT networks are clarified to the reader and their future applications are encouraged.
With the uninterrupted revolution of communications technologies and the great-leap-forward development of emerging applications, the ubiquitous deployment of Internet of Things (IoT) is imperative to accommodate constantly growing user demands and market scales. Communication security is critically important for the operations of IoT. Among the communication security provisioning techniques, physical layer security (PLS), which can provide unbreakable, provable, and quantifiable secrecy from an information-theoretical point of view, has drawn considerable attention from both the academia and the industries. However, the unique features of IoT, such as low-cost, wide-range coverage, massive connection, and diversified services, impose great challenges for the PLS protocol design in IoT. In this article, we present a comprehensive review of the PLS techniques toward IoT applications. The basic principle of PLS is first briefly introduced, followed by the survey of the existing PLS techniques. Afterwards, the characteristics of IoT are identified, based on which the challenges faced by PLS protocol design are summarized. Then, three newly-proposed PLS solutions are highlighted, which match the features of IoT well and are expected to be applied in the near future. Finally, we conclude the paper and point out some further research directions.
The security of the Internet of Things (IoT) is receiving considerable interest as the low power constraints and complexity features of many IoT devices are limiting the use of conventional cryptographic techniques. This article provides an overview of recent research efforts on alternative approaches for securing IoT wireless communications at the physical layer, specifically the key topics of key generation and physical layer encryption. These schemes can be implemented and are lightweight, and thus offer practical solutions for providing effective IoT wireless security. Future research to make IoT-based physical layer security more robust and pervasive is also covered.