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Article
Chosen-plaintext attack of an image encryption scheme based on modified permutation–diffusion structure
Since the first appearance in Fridrich’s design, the usage of permutation–diffusion structure for designing digital image cryptosystem has been receiving increasing research attention in the field of chaos-bas...
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Article
An image encryption scheme based on time-delay and hyperchaotic system
In this paper, a novel image encryption scheme based on time-delay and hyperchaotic system is suggested. The time-delay phenomenon is commonly observed in daily life and is incorporated in the generation of ps...
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Article
Breaking a novel colour image encryption algorithm based on chaos
Recently, a colour image encryption algorithm based on chaos was proposed by cascading two position permutation operations and one substitution operation, which are all determined by some pseudo-random number ...
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Article
An efficient chaotic image encryption algorithm based on a generalized Arnold map
An efficient image encryption algorithm using the generalized Arnold map is proposed. The algorithm is composed of two stages, i.e., permutation and diffusion. First, a total circular function, rather than the...
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Article
Hopf Bifurcation on a Two-Neuron System with Distributed Delays: A Frequency Domain Approach
In this paper, a more general two-neuron model with distributed delays and weak kernel is investigated. By applying the frequency domain approach and analyzing the associated characteristic equation, the exist...
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Article
Hopf Bifurcation and Stability of Periodic Solutions for van der Pol Equation with Distributed Delay
The van der Pol equation with a distributed time delay is analyzed. Itslinear stability is investigated by employing the Routh–Hurwitzcriteria. Moreover, the local asymptotic stability conditions are alsoderiv...