摘要： 提出一种基于混沌映射网络和标准幻方变换的数字图像加密算法。通过4个一维分段线性混沌映射构成混沌映射网络产生加密需要的伪随机序列，用该伪随机序列和标准幻方变换进行数字图像加密，并对算法的安全性进行理论分析和数字仿真。实验结果表明，该算法具有良好的安全性能。

关键词: 分段线性映射, 混沌密码, 幻方变换, 密码分析

Abstract: This paper proposes a digital image encryption algorihm which is based on the chaotic map network. A pseudorandom sequence is generated from a chaotic map network, which consists of four 1-D piecewise-linear maps. The pseudorandom sequence and the standard magic square are used for image encryption. The algorithm security is carried out with theory analysis and digital simulation. Experimental results show that the proposed encryption scheme has high security.

Key words: piecewise-linear map, chaotic cipher, magic square transform, cryptanalysis

中图分类号: 

• TP309.7