A new cryptosystem based on spatial chaotic system
A new cryptosystem based on spatial chaotic system
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DOI：
10.1016/j.optcom.2010.01.028
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发表时间：
2010-05
影响因子：
2.4
通讯作者：
Fuyan Sun;Zongwang Lü;Shutang Liu
中科院分区：
文献类型：
--
作者：
Fuyan Sun;Zongwang Lü;Shutang Liu
图像的加密不同于文本的加密，因为图像本身具有数据量大、冗余度高等特点，传统的加密方法难以处理。本文提出了一种新的空间混沌系统（SCS），并通过FIPS 140-1统计检验对其进行了研究，该系统特别适用于数字图像的加密。它示出了如何适应从SCS获得的二维（2D）遍历矩阵置换图像像素的位置和混淆之间的关系的密码图像和普通图像的同时。实验结果表明，该密码系统的性能和安全性优于现有的低维混沌密码系统。
Encryption of images is different from that of texts due to some intrinsic features of images such as bulk data capacity and high redundancy, which is generally difficult to handle by traditional methods. This paper proposes a new spatial chaos system (SCS), which is investigated by conducting FIPS 140-1 statistic test, and is especially useful for encryption of digital images. It is shown how to adapt a two dimensional (2D) ergodic matrix obtained from SCS to permute the positions of image pixels and confuse the relationship between the cipher image and plain image simultaneously. Experimental results show that the performance and security of the proposed cryptographic system are better than those of existing lower dimensional chaotic cryptographic systems.