Journal
INFORMATION TECHNOLOGY AND CONTROL
Volume 45, Issue 3, Pages 235-242Publisher
KAUNAS UNIV TECHNOLOGY
DOI: 10.5755/j01.itc.45.3.12650
Keywords
Hyperchaotic system; synchronization; selective encryption; DWT; Benrejeb arrow form matrix; stability
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In this paper, a new and robust image encryption scheme, based on chaotic system synchronization and Discrete Wavelet Transform (DWT), is proposed. First, a discrete wavelet transform is used to decompose the image and to decorrelate its pixels into approximation and detail components. Then, a selective image encryption, based on chaotic algorithm, is applied to encrypt only a subset of data. To recover the original image, the proposed synchronization scheme is based on the use of aggregation techniques and Borne and Gentina practical criterion for stability study associated to the Benrejeb arrow form matrix for system description. Experimental results using hyperchaotic Henon map demonstrate that the proposed cipher own has a good resistance against brute force and statistical attacks.
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