Chaos-based image encryption algorithm

In this Letter, a new image encryption scheme is presented, in which shuffling the positions and changing the grey values of image pixels are combined to confuse the relationship between the cipher-image and the plain-image. Firstly, the Arnold cat map is used to shuffle the positions of the image p...

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Vydáno v:Physics letters. A Ročník 346; číslo 1; s. 153 - 157
Hlavní autoři: Guan, Zhi-Hong, Huang, Fangjun, Guan, Wenjie
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 10.10.2005
Témata:
Arnold map
Chaos
Chen's chaotic system
Image encryption
Chaos
Image encryption
Arnold map
Chen's chaotic system
ISSN:0375-9601, 1873-2429
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Popis
Shrnutí:In this Letter, a new image encryption scheme is presented, in which shuffling the positions and changing the grey values of image pixels are combined to confuse the relationship between the cipher-image and the plain-image. Firstly, the Arnold cat map is used to shuffle the positions of the image pixels in the spatial-domain. Then the discrete output signal of the Chen's chaotic system is preprocessed to be suitable for the grayscale image encryption, and the shuffled image is encrypted by the preprocessed signal pixel by pixel. The experimental results demonstrate that the key space is large enough to resist the brute-force attack and the distribution of grey values of the encrypted image has a random-like behavior.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2005.08.006