7结论
本文基于一个六维离散超混沌系统，提出了一个具有密钥动态选择机制的图像加密算法，该算法包括两个阶段：置乱阶段和扩散阶段。该算法不仅具有现有“置乱—替代”算法的优点，还克服了现有算法易受选择明(密)文攻击的缺点和“一次一密”加密方案中密钥管理的难度。
本算法的主要特点如下
(1)在置乱阶段，置乱序列与明文图像的像素总和相关，加密不同的图像所用置乱序列不同。
(2)在扩散阶段，扩散密钥流是根据每个明文像素值和密文像素值动态变化的，因此加密不同的图像所用扩散密钥流不同。算法能抵抗选择明文（密文）的攻击。
(3)解密时，明文图像的像素总和不是密钥的一部分，解密密钥只是混沌系统的初始值，克服了“一次一密”加密方案（加密不同明文所用密钥不同）中密钥管理的难度。
另外，对提出的加密算法进行了仿真实验和安全性分析，结果表明：该算法具有密钥空间大、密文没有明显的统计特性、密文对明文和密钥非常敏感、能够抵抗差分攻击和选择明（密）文的攻击等优点，具有良好应用前景。
参考文献：
[1]Alvarez G, Li S.Some basic cryptographic requirements for chaos-based cryptosystem[J]. International Journal of Bifurcation and Chaos,2006 ,16: 2129–2151 .
[2]Fridrich J. Symmetric ciphers based on two-dimensional chaotic maps[J]. .International Journal of Bifurcation and Chaos,1998,8:1259–1284.
[3]Liu Hongjun , Wang Xingyuan . Color image encryption based on one-time keys and robust chaotic maps[J]. Computers and Mathematics with Applications, 2010, 59(10): 3320-3327. [4]Wang Xingyuan, Lin Teng, Qin Xue. A novel colour image encryption algorithm based on chaos[J]. Signal Processing, 2012, 92(4): 1101-1108.
[5]韩凤英, 朱从旭. 新型置换和替代结构的图像混沌加密算法[J].武汉大学学报(理学版), 2014, 60(5): 447-452.
[6]刘泉, 李佩玥, 章明朝, 等. 基于可Markov 分割混沌系统的图像加密算法[J]. 电子与信息学报, 2014, 36(6): 1271-1277.
[7]Liu Hongjun, Wang Xingyuan. Color image encryption using spatial bit-level permutation and high-dimension chaotic system[J]. Optics Communications, 2011, 284(16-17): 3895-
3903.
[8]谢国波, 王朝阳.基于滑块与矩阵旋转的混沌图像加密算法[J]. 计算机工程与应用, 网络出版时间： 2017-09-08 16:28:45
[9]Xu Lu, Gou Xu, Li Zhi , Li Jian. A novel chaotic image encryption algorithm using block scrambling and dynamic index based diffusion[J]. Optics and Lasers in Engineering, 2017,91:41-52
[10]Liu Hongjun, Wang Xingyuan. Image encryption using DNA complementary rule and chaotic maps[J]. Applied Soft Computing, 2012, 12(5): 1457-1466.
[11]Anchal Jain, Navin Rajpal. A robust image encryption algorithm resistant to attacks using DNA and chaotic logistic maps[J]. Multimedia Tools Applications, 2015, 29(1): 1-18. [12]Huang Xiaoli, Ye Guodong. An image encryption algorithm based on hyper-chaos and DNA sequence[J]. Multimedia Tools Applications, 2014, 72(1): 57-70.
[13]Aqeel-ur-Rehman, Liao Xiaofeng et al. An efficient mixed
inter-intra pixels substitution at 2bits-level for image encryption technique using DNA and chaos[J]. Optk, 2018, 153: 117-134
[14]田海江，雷鹏，王永..基于混沌和DNA动态编码的图像加密算法[J], 吉林大学学报（工学版）,2014,44(3):801-806
[15]朱淑芹，王文宏，孙忠贵.对一种基于比特置乱和超混沌图像加密算法的选择明文攻击[J],计算机科学，2017，44(11)： 273-278
[16]Zhu Congxu, Liao Chunlong, Deng Xiaoheng. Breaking and improving an image encryption scheme based on total shuffling scheme[J]. Nonlinear Dynamics, 2013,71(1-2): 25-34
[17]朱淑芹，王文宏，李俊青. 对像素置乱和比特替换的混沌图像加密算法的破解[J],计算机应用，2017, 12(37):44-47.
[18]朱淑芹，李俊青，王文宏 对改进的基于DNA编码和混沌的图像加密算法的安全性分析[J].计算机应用研究，2017, 34(10):3090-3093
[19]Wu Jiahui, Liao Xiaofeng ,Yang Bo. Cryptanalysis and enhancements of image encryption based on three-dimensional bit matrix permutation[J]. Signal Processing,2018,292-300 [20]Wang Xingyuan, Zhang Yingqian, Bao Xuemei..A novel chaotic image encryption scheme using DNA sequence operations[J].Optics and. Lasers in Engineering,2015,73: 53– 61 .
[21]Li Xiang,Wang Leyuan , Yan Yinfa. An improvement color image encryption algorithm based on DNA operations and real and complex chaotic systems[J]. Optik, 2016, 127:2558–2565.
[22]朱淑芹, 李俊青, 葛广英. 基于一个新的四维离散混沌映射的图像加密新算法[J]. 计算机科学, 2017, 44(1): 188-
193.
[23]Guesmi R,Farah M, Kachouri A, Samet M.. A novel chaos-based image encryption using DNA sequence operation and Secure Hash Algorithm SHA-2[J]. Nonlinear Dynamics,2016,83:1123–1136
[24]Chen E, Min Lequan, Chen Guanrong. Discrete chaotic systems with one-line equilibria and their application to image encryption[J] International Journal of Bifurcation and Chaos, 2017,27, 1750046–1–17.
《密钥动态选择机制的图像加密算法》附论文PDF版下载：
http://www.lunwensci.com/uploadfile/2018/0811/20180811070254137.pdf
关注SCI论文创作发表，寻求SCI论文修改润色、SCI论文代发表等服务支撑，请锁定SCI论文网！
文章出自SCI论文网转载请注明出处：https://www.lunwensci.com/jisuanjilunwen/445.html
