A novel chaotic image encryption scheme using DNA sequence operations

作     者：Wang, Xing-Yuan Zhang, Ying-Qian Bao, Xue-Mei 

作者机构：Dalian Univ Technol Fac Elect Informat & Elect Engn Dalian 116024 Peoples R China Dalian Univ Technol City Inst Dalian 116600 Peoples R China 

出 版 物：《OPTICS AND LASERS IN ENGINEERING》 (工程光学与激光)

年 卷 期：2015年第73卷

页      面：53-61页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China [61370145, 61173183, 60973152] Doctoral Program Foundation of Institution of Higher Education of China Program for Liaoning Excellent Talents in University [LR2012003] National Natural Science Foundation of Liaoning province Fundamental Research Funds for the Central Universities [DUT12JB06] 

主　　题：Image encryption DNA coding DNA sequence operation Coupled map lattice 

摘      要：In this paper, we propose a novel image encryption scheme based on DNA (Deoxyribonucleic acid) sequence operations and chaotic system. Firstly, we perform bitwise exclusive OR operation on the pixels of the plain image using the pseudorandom sequences produced by the spatiotemporal chaos system, i.e., CML (coupled map lattice). Secondly, a DNA matrix is obtained by encoding the confused image using a kind of DNA encoding rule. Then we generate the new initial conditions of the CML according to this DNA matrix and the previous initial conditions, which can make the encryption result closely depend on every pixel of the plain image. Thirdly, the rows and columns of the DNA matrix are permuted. Then, the permuted DNA matrix is confused once again. At last, after decoding the confused DNA matrix using a kind of DNA decoding rule, we obtain the ciphered image. Experimental results and theoretical analysis show that the scheme is able to resist various attacks, so it has extraordinarily high security. (C) 2015 Elsevier Ltd. All rights reserved.