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This paper presents a chaos-based speech scrambling system. Chaotic maps have been successfully used for large-scale data encryption such as image, audio and video data, due to their good properties such as pseudo-randomness, sensitivity to changes in initial conditions and system parameters and aperiodicity. This paper uses two chaotic maps, circle map and logistic map for speech confusion and diffusion,...
The author of this article makes studies and discussion on the image encryption of transforming domains. In the image encryption algorithm, the sine chaotic mapping scrambling is applied to the original image, and the scrambling matrix is generated by Logistic chaotic system. Fractional Fourier transform, respectively, is along the x-axis and y-axis that generates a function which is transformed random...
In present age chaos based cryptosystem has gained attention in research of information security and number of chaos based image encryption algorithms has been proposed. In this paper, a new symmetric image encryption algorithm based on multiple chaotic maps is proposed. In the proposed algorithm, the plain image is first scrambled using generalized Arnold Cat Map. Further, the scrambled image at...
The paper presents an image encryption algorithm based on two-dimensional (2D) Logistic map and complicated Chua's system. Firstly it utilizes two chaotic sequences generated by 2D Logistic map to scramble a color image, and then uses the chaotic sequences generated by optimization models of Chua's system to produce new pixel values. The simulation results demonstrate that the algorithm has good properties...
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