A Physical Layer Key Generation Using a Hybrid Quantization Scheme
Authors: 
Rong Zhu, Enjian BaiAuthors Info & Claims
Pages 156 - 160
Abstract
The traditional wireless communication security technology is based on cryptography at the network layer, which exploits computational complexity to make it difficult to crack to achieve encryption. With the ongoing advancement of computing power, computational security may be difficult to maintain. From the viewpoint of information theory, physical layer security technology is an essential instrument for integrating security and communication. This paper mainly studies the quantization steps in the key generation technology of wireless communication physical layer. In this paper, a quantization scheme with extremely low implementation complexity is proposed for key generation. Firstly, utilizing the reciprocity and randomness of the wireless channel, the communication parties conduct channel measurements to collect channel state information (CSI) and study the improvement of CSI extraction by incorporating intelligent reflection surfaces. Then, the proposed hybrid quantization scheme makes full use of CSI and quantizes the CSI and its phase information to obtain key bits. Numerical results show that the proposed scheme improves the quality of key generation and avoids information leakage during transmission, and passes the NIST randomness test.
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Published In
October 2023
446 pages
ISBN:9798400716683
DOI:10.1145/3640912
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Published: 22 February 2024
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CNML 2023
CNML 2023: 2023 International Conference on Communication Network and Machine Learning
October 27 - 28, 2023
Zhengzhou, China
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