A chaos-based symmetric image encryption scheme using a bit-level permutation

In recent years, a variety of chaos-based digital image encryption algorithms have been suggested. Most of these algorithms implement permutations and diffusions at the pixel level by considering the pixel as the smallest (atomic) element of an image. In fact, a permutation at the bit level not only...

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Bibliographic Details
Published in:Information sciences 2011-03, Vol.181 (6), p.1171-1186
Main Authors: Zhu, Zhi-liang, Zhang, Wei, Wong, Kwok-wo, Yu, Hai
Format: Article
Language:English
Subjects:
Algorithms
Bit-level permutation
Chaos
Computer simulation
Cryptography
Diffusion
Encryption
Image encryption
Logistics
Permutations
Pixels
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Summary:In recent years, a variety of chaos-based digital image encryption algorithms have been suggested. Most of these algorithms implement permutations and diffusions at the pixel level by considering the pixel as the smallest (atomic) element of an image. In fact, a permutation at the bit level not only changes the position of the pixel but also alters its value. Here we propose an image cryptosystem employing the Arnold cat map for bit-level permutation and the logistic map for diffusion. Simulations have been carried out and analyzed in detail, demonstrating the superior security and high efficiency of our cryptosystem.
ISSN:0020-0255
1872-6291
DOI:10.1016/j.ins.2010.11.009