集中式安全组播动态组控制授权算法  

A Centralized Warrant Distributing and Updating Approach for Secure Multicast Group Control

作　　者：赵欣[1] 李肖坚[1] 吴威[1] 

机构地区：[1]北京航空航天大学计算机学院,北京100083

出　　处：《计算机研究与发展》2006年第8期1391-1397,共7页Journal of Computer Research and Development

基　　金：国家"九七三"重点基础研究发展规划基金项目(2002CB312105)~~

摘　　要：针对组播安全通信以及动态控制组成员通信关系的问题,提出将密钥包含在授权信息中分发给用户的授权算法·用户通过认证身份获取相应组播地址上的发送、接收权限,由控制中心动态更新通信结点授权,并采用加密算法与类型字映射表以增大破解难度·验证结果表明,采用该算法的组播安全传输系统能够做到在控制中心对机密组进行实时的划分和调整,以达到控制用户通信关系或动态抗破解的目的·In order to control the communication relation actively in secure multicast, an approach is proposed, which distributes warrant containing secret key. Users get warrant in order to communicate in some multicast group. The group controller can update the users＇ warrants to change the users＇ communicate relation. This approach also uses an encryption algorithms and types＇ mapping table to increase the security. The result shows that this approach can set several smaller secure groups in a multicast group and change the users＇ communication relation actively, so as to act against attack or control the communication relation.

关 键 词：组播 授权分发 动态更新 机密组 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]