混沌系统动态密钥与RSA联合的流媒体保密方法  

A Streaming Media Secure Communication Method Combined by Dynamic Key of Dual Chaotic Systems and RSA

作　　者：康守强[1] 郑建禹 王玉静[1] 纪彬[1] 兰朝凤[1] 高华强[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2015年第4期109-115,121,共8页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51305109);黑龙江省博士后资助经费(LBH-Z13113);黑龙江省自然科学基金(QC2014C075)

摘　　要：提出一种基于两个超混沌动态密钥与RSA联合的流媒体保密通信方法.该方法将混沌系统参数与混沌系统的迭代参数作为动态参数,每次通信前随机生成满足条件的值,通信两端使用RSA算法对参数进行保密交换,确保参数只能被指定接收者唯一使用.将两个超混沌系统生成的混沌序列交织组成密钥,使密钥空间更大.为了满足流媒体网络传输的实时性,提出一种改进的密钥序列生成方法,提高加密速度.通过C语言编写的软件在局域网内进行测试,结果表明:该方法既满足流媒体通信的安全性也满足其对实时性的要求.To present a streaming media secure communication method based on dynamic key of two hyper-cha- otic systems and RSA （combined by three initial letters of family name in three people Rivest, Shamir and Adle- man） encryption algorithm. The chaotic system parameters and iterative parameters of chaotic system serve as dy- namic parameters in this method. Parameter values meeting some conditions are randomly generated for every com- munication. And two parties in communications use the RSAalgorithm to exchange secure parameters. Make sure that the parameters are used only by the specified receiver. The keys are combined by chaotic sequences generated by two hyper-chaotic chaotic systems, making the key space larger. To satisfy the meet of real time in streaming media transmission, an improved generation method Of key sequence is presented to increase the encryption speed. The software written by C language is run to make a test in the LAN. It shows that the proposed method meets not only the safety of streaming media communication but also the need of real time.

关 键 词：混沌系统 动态密钥 流媒体 实时性 

分 类 号：TN918[电子电信—通信与信息系统]