A new color image cryptosystem via hyperchaos synchronization

Wu, Xiangjun; Chenxi, Bai; Kan, Haibin

doi:10.1016/j.cnsns.2013.10.025

Cited by 59 publications

(21 citation statements)

References 31 publications

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“…Hyperchaotic attractor has more than one positive Lyapunov exponent (LE), which means the dynamics of the hyper-chaotic attractor expends in more than one direction. So, in engineering, hyper-chaotic attractor has a great potential of application [2,3]. Constructing new hyper-chaotic systems, especially the 4D smooth quadratic autonomous hyper-chaotic systems, has become a hot topic.…”

Section: Introductionmentioning

confidence: 99%

Local bifurcation analysis and ultimate bound of a novel 4D hyper-chaotic system

et al. 2014

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This paper presents a new four-dimensional smooth quadratic autonomous hyper-chaotic system which can generate novel two double-wing periodic, quasi-periodic and hyper-chaotic attractors. The Lyapunov exponent spectrum, bifurcation diagram and phase portrait are provided. It is shown that this system has a wide hyper-chaotic parameter. The pitchfork bifurcation and Hopf bifurcation are discussed using the center manifold theory. The ellipsoidal ultimate bound of the typical hyper-chaotic attractor is observed. Numerical simulations are given to demonstrate the evolution of the two bifurcations and show the ultimate boundary region.

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Section: Introductionmentioning

confidence: 99%

Local bifurcation analysis and ultimate bound of a novel 4D hyper-chaotic system

et al. 2014

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“…Especially, LiYorke theorem [2] and Takens' work [3], not only described the mathematical characteristics of chaos, but also provided experimental schemes applying the chaos effect. In recent years, it has been reported that chaos theory is widely and successfully applied in classical physics domain [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Quantum parameter identification for a chaotic atom ensemble system

Song

2016

Physics Letters A

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“…The image signals could be hidden in the Qi hyper-chaotic system. Wu XJ et al [24] proposed a color image cryptosystem based on the synchronization of two different sixdimensional hyper-chaotic systems. But most of the algorithms are defective in security, speed or theoretical basis to some extent.…”

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confidence: 99%

Image encryption algorithm based on hyper-chaotic system and dynamic S-box

Yang

Tong

2015

Multimed Tools Appl

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Chaos based image encryption algorithm is a research hotspot in multimedia security area. In this paper, a hyper-chaos based image encryption algorithm is proposed. Firstly, a new hyper-chaotic system is constructed and its dynamic characteristics are analyzed. The proposed hyper-chaotic system has bigger Lyapunov exponent than many classical hyperchaotic systems. Then this system is used to generate key-streams to permute and substitute the image pixels. In the encryption algorithm, a dynamic S-box is constructed to get good confusion effect. This S-box is based on the inverse operation in the algebraic structure Z 257 . Moreover, this inverse operation is embedded into an affine transformation to complicate the algebraic expression of the S-box and improve its security. The analysis results show that the proposed algorithm performs well.

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A new color image cryptosystem via hyperchaos synchronization

Cited by 59 publications

References 31 publications

Local bifurcation analysis and ultimate bound of a novel 4D hyper-chaotic system

Local bifurcation analysis and ultimate bound of a novel 4D hyper-chaotic system

Quantum parameter identification for a chaotic atom ensemble system

Image encryption algorithm based on hyper-chaotic system and dynamic S-box

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