A Stream Cipher Based on Discretized Spatiotemporal Chaotic System

<abstract> <p>Video information is currently widely used in various fields. Compared with image and text data, video data has the characteristics of large data volume, strong data relevance, and large data redundancy, which makes traditional cryptographic systems no longer suitable for video encryption systems. The paper proposes a new chaotic system based on coupled map lattice (CML) and applies it to high efficiency video coding (HEVC) video encryption. The chaotic system logistic-iterative chaotic map with infinite collapses-coupled map lattice (L-ICMIC-CML), which is improved on the basis of the ICMIC system and combined with CML, generates stream ciphers and encrypts some syntax elements of HEVC. The experimental results show that the stream cipher generated by the L-ICMIC-CML system passes the SP800-22 Revla test and has strong randomness. Applying the stream cipher to the proposed HEVC encryption scheme, through the analysis of the encryption scheme's security, encryption time and encryption efficiency, it is better than other chaotic system encryption schemes. The video encryption system proposed in this paper is both safe and efficient.</p> </abstract>

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A new color image encryption scheme based on DNA encoding and spatiotemporal chaotic system

Signal Processing Image Communication ◽

10.1016/j.image.2019.115670 ◽

2020 ◽

Vol 80 ◽

pp. 115670 ◽

Cited By ~ 9

Author(s):

Kang Xuejing ◽

Guo Zihui

Keyword(s):

Image Encryption ◽

Chaotic System ◽

Color Image ◽

Encryption Scheme ◽

Dna Encoding ◽

Color Image Encryption ◽

Spatiotemporal Chaotic System

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Li–Yorke chaos in a spatiotemporal chaotic system

Chaos Solitons & Fractals ◽

10.1016/j.chaos.2006.01.077 ◽

2007 ◽

Vol 33 (2) ◽

pp. 335-341 ◽

Cited By ~ 29

Author(s):

Ping Li ◽

Zhong Li ◽

Wolfgang A. Halang ◽

Guanrong Chen

Keyword(s):

Chaotic System ◽

Spatiotemporal Chaotic System

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Breaking an image encryption scheme based on a spatiotemporal chaotic system

Signal Processing Image Communication ◽

10.1016/j.image.2015.09.006 ◽

2015 ◽

Vol 39 ◽

pp. 151-158 ◽

Cited By ~ 21

Author(s):

Rabei Bechikh ◽

Houcemeddine Hermassi ◽

Ahmed A. Abd El-Latif ◽

Rhouma Rhouma ◽

Safya Belghith

Keyword(s):

Image Encryption ◽

Chaotic System ◽

Encryption Scheme ◽

Spatiotemporal Chaotic System

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A Wheel-Switch Selective Image Encryption Scheme Using Spatiotemporal Chaotic System

Zeitschrift für Naturforschung A ◽

10.5560/zna.2013-0075 ◽

2014 ◽

Vol 69 (1-2) ◽

pp. 61-69 ◽

Cited By ~ 2

Author(s):

Xing-Yuan Wang ◽

Xue-Mei Bao

Keyword(s):

Theoretical Analysis ◽

Image Encryption ◽

Chaotic System ◽

Initial Conditions ◽

Image Data ◽

Encryption Scheme ◽

Cyclic Shift ◽

Coupling Constant ◽

Plain Image ◽

Spatiotemporal Chaotic System

In this paper, we propose a novel selective image encryption scheme using a one-way coupled map lattice (CML) consisting of logistic maps and a selector constructed by two variants of a cyclic shift register (VCSR). The initial conditions and the coupling constant of CML in our scheme are influenced by all the contents of the plain image. Moreover, the selector is closely related to the nonencrypted part of the plain image. In addition, we select only a portion of image data to encrypt via a wheel-switch scheme governed by the selector. Users can select an appropriate proportion to encrypt the plain image for their different demands of security and efficiency. Experimental results and theoretical analysis show that the cryptosystem is effective and can resist various typical attacks.

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A Spatiotemporal Chaotic System Based on Pseudo-Random Coupled Map Lattices and Elementary Cellular Automata

10.21203/rs.3.rs-218822/v1 ◽

2021 ◽

Author(s):

Youheng Dong ◽

Zhao Geng

Keyword(s):

Cellular Automata ◽

Chaotic System ◽

Dynamic Properties ◽

Entropy Density ◽

Coupled Map Lattices ◽

Theory Analysis ◽

Elementary Cellular Automata ◽

Dynamical Degradation ◽

Random Coupling ◽

Spatiotemporal Chaotic System

Abstract The coupled map lattices (CML) is a spatiotemporal chaotic system with complex dynamic behavior. In this paper, we propose a spatiotemporal chaotic system with a novel pseudo-random coupling method based on the elementary cellular automata (ECA), and add different perturbations to lattices in each iteration according to ECA. We investigate the spatiotemporal dynamic properties and chaotic behaviors of the proposed system such as bifurcation diagrams, Kolmogorov-Sinai entropy density, and universality. Moreover, the correlation between any two lattices is discussed. Theory analysis and simulation test indicate that the new system has better performance in complexity, ergodic and unpredictability than conventional CML systems such as adjacent CML and mixed linear-nonlinear CML. Furthermore, the correlation coefficient between any two lattices in proposed system is significantly lower than other systems, and another advantage of the proposed system is utilizing the output of ECA to perturb the chaotic system which can effectively alleviate the dynamical degradation in digital system. The excellent performance of proposed system demonstrates that it has great potential for crypto-system.

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