Image encryption algorithm using chaotic Chebyshev generator

In this paper, we present a chaotic image encryption algorithm in which the key stream is generated by nonlinear Chebyshev function. The novel method of designing pseudorandom chaotic sequence is carried out with the created secret keys depending on with each other. We then make multiple permutation...

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Bibliographic Details
Published in:Nonlinear dynamics 2012-03, Vol.67 (4), p.2411-2417
Main Author: Huang, Xiaoling
Format: Article
Language:English
Subjects:
Algorithms
Automotive Engineering
Chaos theory
Chebyshev approximation
Classical Mechanics
Computer simulation
Control
Dynamical Systems
Encryption
Engineering
Keys
Mechanical Engineering
Original Paper
Permutations
Pixels
Pseudorandom
Pseudorandom sequences
Vibration
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Summary:In this paper, we present a chaotic image encryption algorithm in which the key stream is generated by nonlinear Chebyshev function. The novel method of designing pseudorandom chaotic sequence is carried out with the created secret keys depending on with each other. We then make multiple permutation of pixels to decrease the strong correlation between adjacent pixels in original plain image. Further, a two-dimensional Chebyshev function is considered to avoid known-plaintext and chosen-plaintext attacks in diffusion process, i.e., even with a one-bit change in original plain image, the encrypted image would become different greatly. Simulation results are given to show that the proposed method can offer us an efficient way of encrypting image.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-011-0155-7