摘要
利用混沌系统的伪随机性、遍历性等奇特特性,提出一种新的基于双混沌映射的图像分块加密方案,其方法是利用Chebyshev映射与Henon映射构造伪随机序列发生器,生成二维随机序列密钥流,利用Chebyshev映射生成的密钥流对明文图像进行混淆加密,随后将加密后的图像分为两个大小相同的子块,通过Henon映射密钥流对两个子块分别进行像素值扩散加密,达到最终加密效果。利用数据模拟验证该算法可以有效抵抗差分攻击、穷举攻击等各攻击类型,敏感性、安全性很强。
By using pseudo randomness,ergodicity of chaotic system such as peculiar features,proposes a new image block encryption scheme based on double chaos mapping,the method is to use Chebyshev maps with Henon mapping structure pseudo random sequence generator,two-di mensional random sequence key generated flow,using the Chebyshev maps generated key stream encrypt plaintext image confusion,then the encrypted image is divided into two blocks with the same size,by Henon map key pixel values of two sub-block diffusion encryption,achieve finally encryption effect.Simulation results show that the algorithm can effectively resist differential attack,exhaustive attack and other types of attacks,with strong sensitivity and security.
作者
伊皮提哈尔·塔依尔
阿布都热合曼·卡的尔
Iptihar Tayir;Abdurahman Kadir(College of Statistics and Data Science,Xinjiang University of Finance and Economics,Urumqi 830012;College of Information and Management,Xinjiang University of Finance and Economics,Urumqi 830012)
出处
《现代计算机》
2019年第30期25-29,44,共6页
Modern Computer
基金
国家自然科学基金：混沌理论在后量子密码学中的应用研究(No.61662073、61363082)
