基于完全子树协议的广播密钥加密分发方案  

Broadcast key encryption distribution scheme and implementation based on CS protocol

作　　者：李烛 刘璟 姚绍文[1] 吴云云 LI Zhu;LIU Jing;YAO Shaowen;WU Yunyun(School of Software,Yunnan University,Kunming Yunnan 650504,China)

机构地区：[1]云南大学软件学院

出　　处：《计算机应用》2019年第S02期136-139,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61363084);云南大学第四批中青年骨干教师基金资助项目(XT412003);云南大学师资队伍建设基金资助项目(XT412001)

摘　　要：如何更加安全、高效地分发组密钥是广播通信中研究的重点。当用户增长速率过高,大量用户涌入终端,会给服务器带来巨大的负荷,而一些企业为了节省开销,往往会降低安全需求。传统的密钥分发策略需要占用较多的通信资源,完全子树(CS)协议占用较大的通信开销;而子集差(SD)协议能够有效地减少通信开销。基于CS协议的成员分配机制和SD协议降低存储开销的特点,设计并实现了一个基于CS协议的广播加密方案,该方案用于广播密钥的分发和加密,通过进行仿真实验证明了其可行性。How to securely and efficiently distribute group key is the focus of research in boadcast communication.When the user growth rate is too high,a large number of users flooding to the terminal will bring a huge load to the server,and some enterprises reduce security requirements in order to save costs.The traditional key distribution strategy requires a large amount of communication resources.Complete Subtree(CS)protocol occupies a large communication overhead,and the Subset Difference(SD)protocol can effectively reduce the communication overhead.Based on the member distribution mechanism of CS protocol and the the communication overhead reduction of SD protocol,this paper designed and implemented a broadcast key encryption scheme based on a CS protocol structure for the distribution and encryption of broadcast keys.Simulation experiments verify the feasibility of the proposed scheme.

关 键 词：广播密钥分发 完全子树 混合加密 密钥树 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]