一种密文图像安全性评价方案
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摘要
在图像加密技术领域中,已存在多种图像加密方法,但很多图像加密方法因安全性不够而存在被破解的风险。现行的很多密文图像安全性评判方法,选择的参数较为单一,评价结果不够全面。对此,提出一种基于像素数量改变率、密钥空间大小、信息熵、相邻像素相关系数等多种指标参数的密文图像安全性评价方案。通过同一图像使用不同加密算法分别得到的多种指标参数横向比较,得出综合情况下安全性更好的算法。针对现阶段加密应用中使用较多的两类图像进行实验、分析和对比,结果表明方案非常有效、可靠、实用性强。
In the field of image encryption technology, there are many image encryption methods, but many image encryption methods are not secure enough and there is a risk of being cracked. Many existing cryptographic image security evaluation methods choose a single parameter, and the evaluation results are not comprehensive. To solve this problem, we proposed a cryptographic image security evaluation scheme based on pixel number change rate, key space size, information entropy, correlation coefficient of adjacent pixels and other index parameters. Through the horizontal comparison of various index parameters obtained by different encryption algorithms for the same image, it could be concluded which algorithm has better security under the comprehensive situation. Two kinds of images which are widely used in current encryption applications were experimented, analyzed and compared. The results show that the scheme is very effective, reliable and practical.
In the field of image encryption technology, there are many image encryption methods, but many image encryption methods are not secure enough and there is a risk of being cracked. Many existing cryptographic image security evaluation methods choose a single parameter, and the evaluation results are not comprehensive. To solve this problem, we proposed a cryptographic image security evaluation scheme based on pixel number change rate, key space size, information entropy, correlation coefficient of adjacent pixels and other index parameters. Through the horizontal comparison of various index parameters obtained by different encryption algorithms for the same image, it could be concluded which algorithm has better security under the comprehensive situation. Two kinds of images which are widely used in current encryption applications were experimented, analyzed and compared. The results show that the scheme is very effective, reliable and practical.
引文
[1] 冯媛媛,刘莹,赵丽. 基于余弦变换和混沌映射的图像加密方案[J]. 控制工程,2018,25(6): 1103-1107.
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[4] 李银华,叶瑞松.一种基于仿射变换的图像置乱预处理的水印算法[J].汕头大学学报(自然科学版),2014,29(1): 9-16.
[5] 李银华.基于仿射变换及伴随分形插值曲面混沌系统的图像加密算法[D].汕头:汕头大学,2014.
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[14] 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.
[15] Sempere V,Albero T,Silvestre J.Analysis of communication alternatives in a heterogeneous network for a supervision and control system[J].Computer Communications,2006,29(8):1133-1145.
[16] Wang X Y,Lei Y.A novel chaotic image encryption algorithm based on water wave motion and water drop diffusion models[J].Optics Communications,2012,285(20):4033-4042.
[17] 周浩.基于同态加密机制的密文域图像可逆信息隐藏算法研究[D].兰州:兰州理工大学,2016.
[18] 田玉萍.基于离散分数阶Fourier变换本征矢量分解的图像加密算法[J].计算机应用与软件,2016,33(2):318-321,333.
[2] 孙力,梁立.基于位置换的混沌对称图像加密算法[J].计算机应用与软件,2015,32(7):305-309.
[3] 孙婧.可视媒体内容加密的视觉安全性研究[D].武汉:武汉大学,2013.
[4] 李银华,叶瑞松.一种基于仿射变换的图像置乱预处理的水印算法[J].汕头大学学报(自然科学版),2014,29(1): 9-16.
[5] 李银华.基于仿射变换及伴随分形插值曲面混沌系统的图像加密算法[D].汕头:汕头大学,2014.
[6] 朱桂斌,曹长修,胡中豫,等.基于仿射变换的数字图像置乱加密算法[J].计算机辅助设计与图形学学报,2003,15(6):711-715.
[7] 李倩倩.基于FPGA图像加密技术的研究与设计[D].天津:河北工业大学,2014.
[8] 李雷波.几个国际标准分组密码算法的安全性分析[D].济南:山东大学,2014.
[9] 龙长贵,马秀荣,白媛,等.基于外部密钥的多混沌系统图像加密算法[J].计算机应用与软件,2014,31(7):320-323,327.
[10] 班昊.对称密钥算法加密机使用中的安全控制[J].计算机应用与软件,2012,29(8):280-281,300.
[11] 曹建秋,肖华荣,蓝章礼.基于变参混沌系统的图像双重置换加密[J] .计算机工程与应用,2011,47(32):101-104.
[12] Patidar V,Pareek N,Sud K.A new substitution-diffusion based image cipher using chaotic standard and logistic maps[J].Communications in Nonlinear Science and Numerical Simulation, 2009, 14 (7):3056-3075.
[13] 梁锐,郑梁君.浅谈电子档案中数字图像加密技术[J].中国科技博览,2012 (24) :285-285.
[14] 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.
[15] Sempere V,Albero T,Silvestre J.Analysis of communication alternatives in a heterogeneous network for a supervision and control system[J].Computer Communications,2006,29(8):1133-1145.
[16] Wang X Y,Lei Y.A novel chaotic image encryption algorithm based on water wave motion and water drop diffusion models[J].Optics Communications,2012,285(20):4033-4042.
[17] 周浩.基于同态加密机制的密文域图像可逆信息隐藏算法研究[D].兰州:兰州理工大学,2016.
[18] 田玉萍.基于离散分数阶Fourier变换本征矢量分解的图像加密算法[J].计算机应用与软件,2016,33(2):318-321,333.
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