基于Lorenz映射和Logistic映射的图像分块加密算法
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摘要
针对当前大多数图像加密算法安全性较低,且无法抵御选择明文攻击的问题,提出了一种基于Lorenz映射和Logistic映射的图像分块加密算法。算法采用Logistic映射对明文图像进行置乱操作;对置乱后的图像进行分块;利用Lorenz映射产生的混沌序列分别对图像进行块内扩散操作和块间扩散操作,得到加密后的密文图像。仿真结果表明,算法密钥空间大,敏感性高,加密效果较好。
Aiming at the problem that most of the image encryption algorithms are low security and can't resist the choice of plaintext attack, an image block encryption algorithm based on Lorenz mapping and Logistic mapping is proposed. The algorithm first uses Logistic mapping to scramble the plain image. Secondly, the image after the scramble are divided into blocks. Then, the chaotic sequence generated by the Lorenz map is used to perform the intra-block diffusion operation and the inter-block diffusion operation respectively, and the encrypted cipher image is finally obtained. Experimental results show that: the algorithm has large key space, high sensitivity and good encryption effect.
Aiming at the problem that most of the image encryption algorithms are low security and can't resist the choice of plaintext attack, an image block encryption algorithm based on Lorenz mapping and Logistic mapping is proposed. The algorithm first uses Logistic mapping to scramble the plain image. Secondly, the image after the scramble are divided into blocks. Then, the chaotic sequence generated by the Lorenz map is used to perform the intra-block diffusion operation and the inter-block diffusion operation respectively, and the encrypted cipher image is finally obtained. Experimental results show that: the algorithm has large key space, high sensitivity and good encryption effect.
引文
[1] BARENGHI A,BERTONI G M,BREGEGLIERI L,et al.A fault induction technique based on voltage underfeeding with application to attacks against AES and RSA[J].Journal of Systems and Software,2013,86(7):1864-1878.
[2] PAREEK N K,PATIDAR V,SUD K K.Image encryption using chaotic logistic map[J].Image and Vision Computing,2006,24(9):926-934.
[3] 孙福艳,刘树堂,吕宗旺.Image encryption using high-dimension chaotic system[J].中国物理:英文版,2007,16(12):3616-3623.
[4] 赵玉青.基于改进Chen混沌系统的图像加密算法[J].小型微型计算机系统,2014,35(9):2162-2166.
[5] 房东鑫,张健.基于猫映射和DNA编码的图像加密算法[J].计算机工程,2014,40(12):89-93.
[6] 徐亚,张绍武.基于Arnold映射的分块双层自适应扩散图像加密算法[J].中国图象图形学报,2015,20(6):740-748.
[7] MAY R M.Simple mathematical models with very complicated dynamics[J].Nature,1976,261(5560):459-67.
[8] RHOUMA R,BELGHITH S.Cryptanalysis of a new image encryption algorithm based on hyper-chaos[J].Physics Letters A,2008,372(38):5973-5978.
[9] GONZALO A,LI Shujun.Some Basic Cryptographic Requirements for Chaos-Based Cryptosystems[J].International Journal of Bifurcation & Chaos,2006,16(8):2129-2151.
[10] 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.
[11] 刘国良,张红梅.基于混沌映射和Hash函数的图像加密算法[J].桂林电子科技大学学报,2016,36(5):369-374.
[12] 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.
[2] PAREEK N K,PATIDAR V,SUD K K.Image encryption using chaotic logistic map[J].Image and Vision Computing,2006,24(9):926-934.
[3] 孙福艳,刘树堂,吕宗旺.Image encryption using high-dimension chaotic system[J].中国物理:英文版,2007,16(12):3616-3623.
[4] 赵玉青.基于改进Chen混沌系统的图像加密算法[J].小型微型计算机系统,2014,35(9):2162-2166.
[5] 房东鑫,张健.基于猫映射和DNA编码的图像加密算法[J].计算机工程,2014,40(12):89-93.
[6] 徐亚,张绍武.基于Arnold映射的分块双层自适应扩散图像加密算法[J].中国图象图形学报,2015,20(6):740-748.
[7] MAY R M.Simple mathematical models with very complicated dynamics[J].Nature,1976,261(5560):459-67.
[8] RHOUMA R,BELGHITH S.Cryptanalysis of a new image encryption algorithm based on hyper-chaos[J].Physics Letters A,2008,372(38):5973-5978.
[9] GONZALO A,LI Shujun.Some Basic Cryptographic Requirements for Chaos-Based Cryptosystems[J].International Journal of Bifurcation & Chaos,2006,16(8):2129-2151.
[10] 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.
[11] 刘国良,张红梅.基于混沌映射和Hash函数的图像加密算法[J].桂林电子科技大学学报,2016,36(5):369-374.
[12] 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.