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Erschienen in:

01.08.2023

A Bit-Level Three-Dimensional Rectangular Image Encryption Algorithm Using New Chaotic Maps

verfasst von: Zhenhui Li, Zhouli He, Feng Huang, Renyuan Jia

Erschienen in: Automatic Control and Computer Sciences | Ausgabe 4/2023

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Abstract

Some two-dimensional chaotic maps are used for scrambling in image encryption. However, the encryption is often unsafe without destroying image statistical characteristics. Moreover, they can only process square image. Here, it designs a bit-level rectangular image encryption algorithm using three-dimensional chaotic maps to solve the problems. The process can permute and confuse images at the same time. Firstly, a plain image is splitted into eight layers according to the value of pixels, then the eight layers are stretched and connected to a new 8-fold image. Secondly, it introduces and improves a new two-dimensional chaotic map that can deal with rectangular images. Every pixel of a column is placed between two adjacent pixels of corresponding row one by one. When the row is longer than the column, the extra pixels are arranged in the original order. After the process, all the pixels are stretched and connected into a row of pixels. Introducing folding mechanism, the line is further mapped to a new image that is not recognized. Lastly, it uses the maps to permute the bigger image. Finally, the cipher image is combined into an original size cipher image. The process shuffles the pixels’ positions and changes the values. Simulation results validate encryption algorithm has large keys space, no statistical characteristics and fast encryption speed above 1 MB/S. It can achieve enough security requirements in public network.
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Metadaten
Titel
A Bit-Level Three-Dimensional Rectangular Image Encryption Algorithm Using New Chaotic Maps
verfasst von
Zhenhui Li
Zhouli He
Feng Huang
Renyuan Jia
Publikationsdatum
01.08.2023
Verlag
Pleiades Publishing
Erschienen in
Automatic Control and Computer Sciences / Ausgabe 4/2023
Print ISSN: 0146-4116
Elektronische ISSN: 1558-108X
DOI
https://doi.org/10.3103/S0146411623040053

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