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Erschienen in:
2017 | OriginalPaper | Buchkapitel
A Highly Robust and Secure Digital Image Encryption Technique
verfasst von : Md. Anwar Hussain, Popi Bora, Joyatri Bora
Erschienen in: Information Science and Applications 2017
Verlag: Springer Singapore
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Abstract
Robust and secure image encryption requires primarily a very large key-space and immunity to differential attack. We report in this paper a new novel encryption technique using chaotic Logistic map, a support image, and a hyper-chaotic 4-D system. The support image, which is available both with the transmitter and the receiver, is utilized to enhance the robustness and security possible from the encryption algorithms based on chaotic Logistic map and Hyper-chaotic system. The support image is used in two different ways in two schemes that provide different levels of key-space enhancement and immunity to differential attacks. The final stage of the technique uses either one round or two rounds of pixel value diffusion with hyper-chaotic system. The results reported here are encouraging to defeat attacks attempted with high computing resources.