Image compress and encryption method based on Chua's circuit and compressed sensing

被引：1
|
作者：
Ma X. [1 ]
Zhang J. [1 ]
Li T. [1 ]
机构：
[1] College of Missile Engineering, Rocket Force University of Engineering, Xi'an
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2021年 / 43卷 / 09期
关键词：
Chua's circuit; Compressed sensing; Image encryption; Observation matrix; Pseudo random sequence;
D O I：
10.12305/j.issn.1001-506X.2021.09.05
中图分类号：
学科分类号：
摘要：
Aiming at the actual requirements of high efficiency and security in signal acquisition and transmission, a signal compression encryption method based on Chua's circuit and compressive sensing is proposed. Firstly, the SHA-256 algorithm is used to generate a message digest of the original signal; secondly, the digest is used to generate the initial value of the Chua's circuit; The chaotic observation matrix is used to compress and sample the signal by the chaotic analog signal generated from the Chua's circuit which is chosen to generate a pseudo-random sequence through 8-bit quantization acquisition and digital shift difference. Finally, the compressed signal is scrambled and encrypted with the generated pseudo-random sequence to generate a compressed and encrypted signal. The experimental results show that the performance of the chaotic observation matrix generated by this method is better than that of the traditional random observation matrix, and it can effectively improve the signal transmission efficiency and security. © 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：2407 / 2412
页数：5
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