An image encryption algorithm based on improved baker transformation and chaotic S-box  

作　　者：Xing-Yuan Wang Huai-Huai Sun Hao Gao 王兴元;孙怀怀;高浩(School of Information Science and Technology,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]School of Information Science and Technology,Dalian Maritime University,Dalian 116026,China

出　　处：《Chinese Physics B》2021年第6期216-225,共10页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 61672124);the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund,China (Grant No. MMJJ20170203);the Liaoning Provincial Science and Technology Innovation Leading Talents Program Project,China (Grant No. XLYC1802013);the Key Research and Development Projects of Liaoning Province,China (Grant No. 2019020105-JH2/103);the Jinan City ‘20 universities’ Funding Projects Introducing Innovation Team Program,China (Grant No. 2019GXRC031);the “Double First-rate”Construction Project (“Innovation Project”),China (Grant No. SSCXXM013)。

摘　　要：The algorithm is an image encryption algorithm based on the improved baker transformation and chaotic substitution box(S-box). It mainly uses the initial values and parameters of a one-dimensional logistic chaotic system as an encryption key. Specifically, in the image scrambling stage, the algorithm primarily uses an improved baker transform method to process the image. In the image diffusion stage, the algorithm first uses the chaotic S-box method to process the encryption key. Secondly, an exclusive OR(XOR) operation is performed on the image and the encryption key to initially diffuse the image. Finally, the image is again diffused using the method of ortho XOR. Simulation analysis shows that the algorithm can achieve good encryption effect, simple and easy implementation, and good security. In the digital image communication transmission, it has good practical value.

关 键 词：image encryption improved baker transformation chaotic S-box chaotic sequence 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]