WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 9, 2013
Chaotic Image Encryption via Convex Sinusoidal Map
Authors: ,
Abstract: A new image encryption scheme is proposed based on one-dimensional Convex-Sinusoidal Map (CSM). The dynamics of this chaotic map are analyzed and used to develop a two-phase image encryption framework. In the first phase, the image-permutation, a pseudorandom number generator is proposed to shuffle pixel locations while in the second phase, the image-substitution, CSM is utilized to modify pixel intensity values. Experimental results indicate that the Convex-Sinusoidal Map exhibits robust chaos with wide range chaotic behavior. Results also show that the proposed image encryption framework has a large-key space with complexity of order making it immune against Brute-Force Attack methods. It only requires to encrypt pixels images using Intel Core i3 with 4GB memory machine. Moreover, this algorithm provides complete obscure for plain-text images and high encryption performance.
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Keywords: Image encryption, Chaotic maps, Pseudorandom number, Image substitution, Image permutation