基于动态约瑟夫环和比特双重置乱的图像加密
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摘要
本文针对一类混沌图像加密算法的置乱方法复杂性高等问题,提出了一种基于动态约瑟夫环和比特双重置乱的图像加密算法。算法对经典的约瑟夫环问题和传统算法结构进行分析,确立采用动态约瑟夫环置乱的加密方式。然后将置乱序列扩大8倍,利用Logistic混沌序列进行比特位的置乱,从单个像素内部改变相邻像素的关联程度;最后,进行单个像素的像素值替代产生密文图像。实验仿真结果表明,该算法可以抵抗选择明(密)文攻击,加密算法简单,密钥空间大,加密效果较好,具有很好的应用前景。
In this paper,in order to solve the problem that the scrambling method for a class of chaotic image encryption algorithms has high complexity.A new image encryption algorithms was proposed based on chaos through dual scrambling of dynamic Josephus ring and bit.The algorithm analyzes the classical Joseph ring problem and the traditional algorithm structure,and establishes the encryption method using dynamic Joseph ring scrambling.Then the scramble sequence is expanded by 8 times,and the bits are scrambled by Logistic chaotic sequence,and changed the degree of association of adjacent pixels from a single pixel;Finally,the pixel value of a single pixel is replaced diffused to generate a cipher-text image.The experimental results show that the proposed algorithm can resist the selection of explicit(dense)text attacks,the encryption algorithm is simple,the key space is large,the encryption effect is good,and it has a good application prospect.
In this paper,in order to solve the problem that the scrambling method for a class of chaotic image encryption algorithms has high complexity.A new image encryption algorithms was proposed based on chaos through dual scrambling of dynamic Josephus ring and bit.The algorithm analyzes the classical Joseph ring problem and the traditional algorithm structure,and establishes the encryption method using dynamic Joseph ring scrambling.Then the scramble sequence is expanded by 8 times,and the bits are scrambled by Logistic chaotic sequence,and changed the degree of association of adjacent pixels from a single pixel;Finally,the pixel value of a single pixel is replaced diffused to generate a cipher-text image.The experimental results show that the proposed algorithm can resist the selection of explicit(dense)text attacks,the encryption algorithm is simple,the key space is large,the encryption effect is good,and it has a good application prospect.
引文
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[4]谢国波,王添.一种新的基于比特置乱的超混沌图像加密算法[J].微电子学与计算机,2016,33(7):28-32+38.
[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]谢国波,王添.基于像素置乱和比特替换的混沌图像加密算法[J].微电子学与计算机,2016,33(3):80-85.
[7]Li X,Zhang Y.Digital image encryption and decryption algorithm based on wavelet transform and chaos system[C]//Advanced Information Management,Communicates,Electronic and Automation Control Conference.IEEE,2017:253-257.
[8]Awudong B,Li G.Research on Image Encryption Technology Based on Multi Chaotic Mapping[C]//International Conference on Smart City and Systems Engineering.IEEE Computer Society,2017:127-131.
[9]Li Y,Wang C,Chen H.A hyper-chaos-based image encryption algorithm using pixel-level permutation and bit-level permutation[J].Optics&Lasers in Engineering,2017(90):238-246.
[10]邓晓衡,廖春龙,朱从旭,等.像素位置与比特双重置乱的图像混沌加密算法[J].通信学报,2014,35(3):216-223.Deng X H,Liao C L,Zhu C X,et al.Image encryption algorithms based on chaos through dual scrambling of pixel position and bit[J].Journal on Communications,2014.
[2]Xu Y,Wang H,Li Y,et al.Image encryption based on synchronization of fractional chaotic systems[J].Communications in Nonlinear Science&Numerical Simulation,2014,19(10):3735-3744.
[3]Daneshgar A,Khadem B.A self-synchronized chaotic image encryption scheme[M].Elsevier Science Inc.2015.
[4]谢国波,王添.一种新的基于比特置乱的超混沌图像加密算法[J].微电子学与计算机,2016,33(7):28-32+38.
[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]谢国波,王添.基于像素置乱和比特替换的混沌图像加密算法[J].微电子学与计算机,2016,33(3):80-85.
[7]Li X,Zhang Y.Digital image encryption and decryption algorithm based on wavelet transform and chaos system[C]//Advanced Information Management,Communicates,Electronic and Automation Control Conference.IEEE,2017:253-257.
[8]Awudong B,Li G.Research on Image Encryption Technology Based on Multi Chaotic Mapping[C]//International Conference on Smart City and Systems Engineering.IEEE Computer Society,2017:127-131.
[9]Li Y,Wang C,Chen H.A hyper-chaos-based image encryption algorithm using pixel-level permutation and bit-level permutation[J].Optics&Lasers in Engineering,2017(90):238-246.
[10]邓晓衡,廖春龙,朱从旭,等.像素位置与比特双重置乱的图像混沌加密算法[J].通信学报,2014,35(3):216-223.Deng X H,Liao C L,Zhu C X,et al.Image encryption algorithms based on chaos through dual scrambling of pixel position and bit[J].Journal on Communications,2014.