An image encryption scheme based on generalized synchronization theorem for discrete chaos system

被引：0

作者：

Zang, Hongyan ^{[1
]}

Min, Lequan ^{[1
]}

Wu, Chunxue ^{[1
]}

Zhao, Geng ^{[2
]}

机构：

[1] Applied Science School, University of Science and Technology Beijing, Beijing 100083, China

[2] Department of Computer Science, Beijing Electronic Science and Technology Institute, Beijing 100070, China

来源：

Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | 2007年 / 29卷 / 01期

关键词：

Chaos theory - Communication - Computer simulation - Image processing - Synchronization;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A constructive theorem of generalized synchronization for discrete chaos systems is established. Based on the theorem, a generalized chaotic synchronization discrete system was constructed. Combining this system with the Henon chaotic mapping designs a digital image encryption scheme, which can successfully encrypt and decrypt gray-scale images without any lost. The scheme is sensitive to perturbations of the parameters and initial conditions of the chaos system. Any perturbations which are larger than 10-15 will make corresponding decryptions become impossible. The key space of the scheme is as large as 1076. The analysis of key space and key parameter sensitivity shows that the scheme has sound security. Numerical simulations reveal that the scheme is effective in network communication.

引用

页码：96 / 101

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