Journal
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
Volume 18, Issue 8, Pages 2066-2080Publisher
ELSEVIER
DOI: 10.1016/j.cnsns.2012.12.012
Keywords
Dependent diffusion; Reverse cat map; Chaos; Cryptography; Image encryption
Categories
Funding
- National Natural Science Foundation of China [60872040]
- Program for Liaoning Excellent Talents in University
- Natural Science Foundation of Liaoning Province, China [20082037]
- Fundamental Research Funds for the Central Universities [N110617001]
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In recent years, a variety of chaos-based image cryptosystems have been studied. Most of them adopt the traditional confusion-diffusion architecture, which is considered insecure upon chosen/known plain-image attacks. In this paper, a nonlinear traverse on the plain-image using dependent diffusion and reverse cat map is proposed to replace the traditional linear traverse performed in the confusion phase. Two cryptosystems are designed and are implemented by software means. Simulation results and numerical analysis justify their high efficiency and sufficient strength. Crown Copyright (C) 2012 Published by Elsevier B. V. All rights reserved.
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