A new chaotic map based image encryption schemes for several image formats |
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Affiliation: | 1. Xavier School of Computer Science and Engineering, Xavier University Bhubaneshwar, Orissa, 752050, India;2. Department of Computer Science and Engineering, National Institute of Technology Jamshedpur Jamshedpur, Jharkhand, 831014, India;1. Faculty of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang 524088, China;2. College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China |
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Abstract: | This paper proposes several image encryption schemes for popular image formats as Joint Photographic Experts Group (JPEG), Graphics Interchange Format (GIF), Portable Network Graphics (PNG), and Tagged Image File Format (TIFF). A cross chaotic map proposed based on Devaney's theory and dynamic block dividing of the 3D baker using the cross chaotic map are used for diffusion and permutation in encryption. Moreover, in order to verify user's identity, authentication is carried out using information hiding based on the cross chaotic function. In our methods, image files syntax and structure are not destructed, and the original image can be recovered lossless. For GIF, it keeps the property of animation successfully. The security test results indicate the proposed methods have high security, and the speed of our algorithm is faster than classical solutions. JPEG, GIF, TIFF and PNG image formats are popular contemporarily. Therefore this paper shows that the prospect of chaotic image encryption is promising. |
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Keywords: | Image encryption Cross chaotic map Sequence generator |
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