标题：A new cryptosystem based on spatial chaotic system
作者：Fuyan Sun;Zongwang Lu;Shutang Liu
作者机构：[Sun, F] College of Information Science and Engineering, Henan University of Technology, Zhengzhou, 450001, China, College of Control Science and Engi 更多
通讯作者地址：[Sun, FY]Henan Univ Technol, Coll Informat Sci & Engn, Zhengzhou 450001, Peoples R China.
来源：Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter
关键词：Spatial chaos system;Image encryption;Cryptography
摘要：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.