title: Color image encryption scheme using CML and DNA sequence operations.
abstract: In this paper, an encryption algorithm for color images using chaotic system and DNA (Deoxyribonucleic acid) sequence operations is proposed. Three components for the color plain image is employed to construct a matrix, then perform confusion operation on the pixels matrix generated by the spatiotemporal chaos system, i.e., CML (coupled map lattice). DNA encoding rules, and decoding rules are introduced in the permutation phase. The extended Hamming distance is proposed to generate new initial values for CML iteration combining color plain image. Permute the rows and columns of the DNA matrix and then get the color cipher image from this matrix. Theoretical analysis and experimental results prove the cryptosystem secure and practical, and it is suitable for encrypting color images of any size.
authors.affiliation: Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China. Electronic address: wangxy@dlut.edu.cn.
authors.forename: Xing-Yuan
authors.initials: XY
authors.lastname: Wang
authors.affiliation: Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China. Electronic address: zhanghui7873@foxmail.com.
authors.forename: Hui-Li
authors.initials: HL
authors.lastname: Zhang
authors.affiliation: Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, 116024, China. Electronic address: baoxuemei1989@163.com.
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Bao
mesh_terms: D000465:Algorithms; D001483:Base Sequence / Q000502:physiology; D003116:Color; D016494:Computer Security; D039301:Computers, Molecular; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D017711:Nonlinear Dynamics
keywords: Chaotic image encryption; Color image; Coupled map lattice; DNA coding