AN IMAGE ENCRYPTION SCHEME BASED ON CHAOTIC SYSTEMS

摘要：

An image encryption scheme based on chaotic systems is proposed in this paper. By combining the spatial-domain encryption of digital images and the traditional stream ciphers technology, the security of the encryption scheme is enhanced effectively. lnstead of encrypting an image in a chaotic signal directly, the proposed scheme uses two chaotic systems based on the thought of higher secrecy of multi-system. One of the chaotic systems is used to generate a chaotic sequence. Then this chaotic sequence is transformed into a binary stream by a threshold function. The other chaotic system is used to construct a permutation matrix. Firstly, the pixel values of a plain image are modified randomly using the binary stream as a key stream. Secondly, the modified image is encrypted again by permutation matrix. The security of encryption scheme is analyzed in detail. And the simulation results show that the proposed scheme has a better efficiency than others and a high security performance.

关键词： Image encryption Chaotic system Chaotic sequence Permutation matrix

作者: HUANG-PEI XIAO GUO-JI ZHANG

作者单位: School of Computer Science and Engineering, South China University of Technology, Guangzhou 510640, School of Mathematical Sciences, South China University of Technology, Guangzhou 510640, China

会议类型: 国际会议

会议名称: 2006 International Conference on Machine Learning and Cybernetics(IEEE第五届机器学习与控制论坛)

会议地点: 大连

会议语种:英文

页码: 2707-2711

在线出版日期: 2006-08-13（万方平台首次上网日期，不代表论文的发表时间）