摘要
针对双随机相位编码光学加密系统(DRPE)易于被密码分析的问题,提出了一种将双随机相位编码与AES结合的图像加密方案.该算法的主要思想是首先利用四维超混沌系统迭代生成的混沌序列来设计随机相位版和AES目标密钥,以此扩大密钥空间和增强密钥随机性来提高系统安全性,其次通过在DRPE第二透镜输出面植入AES加密算法实现双重加密.模拟仿真实验表明,与同类加密算法相比,该算法有效加强了加密系统密钥的随机性,使得密文的相关系数更低,同时克服了双随机相位编码第二透镜的无效性的不足,具有较高的安全性.
Aiming at the problem that the double random phase encoding optical encryption system(DRPE) is easy to be cryptographically analyzed,this paper proposes an image encryption scheme combining dual random phase encoding and AES. The main idea of the algorithm is to first design the random phase version and AES target key by using the chaotic sequence iteratively generated by the four-dimensional hyperchaotic system,thereby expanding Key space and enhanced key randomness to improve system security.A double encryption is implemented by implanting AES encryption algorithm on the second lens output surface of DRPE.Simulation experiments show that comparing to the similar encryption algorithms,the algorithm enhances the randomness of the encryption system key, and makes the ciphertext correlation coefficient lower, and also overcomes the invalidation of the second lens of the double random phase encoding, which has high security.
作者
王勇
叶树成
王瑛
WANG Yong;YE Shu-cheng;WANG Ying(School of computers,Guangdong University of Technology,Guangzhou 510003,China)
出处
《微电子学与计算机》
北大核心
2020年第7期71-77,共7页
Microelectronics & Computer
基金
广东省创新载体建设项目(2013B09030008)。
