Home // SECURWARE 2019, The Thirteenth International Conference on Emerging Security Information, Systems and Technologies // View article
Authors:
Lee Mariel Heucheun Yepdia
Alain Tiedeu
Zied Lachiri
Keywords: Spectral fusion;chaotic generators;image encryption
Abstract:
This paper proposes a new multiple-image encryption algorithm based on spectral fusion of images and new chaotic generators. Logistic-May (LM), MayGaussian (MG) and Gaussian-Gompertz (GG) were used as chaotic generators for their good properties in order to correct the flaws of 1D chaotic maps (Logistic, May, Gaussian, Gompertz) when used individually. Firstly, the Discrete Cosine Transformation (DCT) and the lowpassed filter of appropriate size are used to combine the target images in the spectral domain in two different multiplex images. Secondly, each of the two images is concatenated into blocks of small size, which are mixed by changing their position following the order generated by a chaotic sequence from Logistic-May system (LM). Finally, the fusion of both scrambled images is achieved by a nonlinear mathematical expression based on Cramer’s rule to obtain two hybrid encrypted images. The security analysis and experimental simulations confirmed that the proposed algorithm has a good encryption performance; it can encrypt a large number of images of different types while maintaining a reduced Mean Square Error (MSE) after decryption.
Pages: 60 to 68
Copyright: Copyright (c) IARIA, 2019
Publication date: October 27, 2019
Published in: conference
ISSN: 2162-2116
ISBN: 978-1-61208-746-7
Location: Nice, France
Dates: from October 27, 2019 to October 31, 2019