无线移动自组网混合式密钥管理方案研究.pdf

第 36 卷第 6 期电子科技大学学报
2007 年 12 月 Journal of University of Electronic Science and Technology of China Dec. 2007
无线移动自组网混合式密钥管理方案研究
王浩1,谢颖1,郑武2
(1. 重庆邮电大学自动化学院重庆南岸区 400065; 2. 电子科技大学计算机科学与工程学院成都 610054)

【摘要】基于门限机制的密钥管理方案能提供高的安全性,但认证成功率较低,可扩展性差;基于证书链的密钥管理方
案适合自组网的特点,但其安全性仅取决于证书链中节点的信任度,不能满足高安全要求的应用环境。该文提出了门限机制
和证书链信任值方法相结合的混合式密钥管理和认证方案,在增加少量通信量的情况下,方案提高了自组网的认证成功率和
系统的安全性,较好地平衡了自组网的安全性和认证成功率,满足自组网应用的安全要求。
关键词自组网; 证书链; 密钥管理; 门限机制
中图分类号文献标识码 A

A New Hybrid Key Management Scheme for Ad works

WANG Hao1,XIE Ying1,ZHENG Wu2
(1. College of Automation, Chongqing University of Posts and munications Nan′an Chongqing 400065;
2. School puter Science and Engineering, University of Electronic Science and Technology of China Chengdu 610054)

Abstract Key management schemes based on threshold mechanism can provide high security, but lower
certificate ess rate and bad scalability; key management schemes based on certification chain satisfy
anized features, but their security depends on trust degree of nodes and could not be applied high security
environment. We advance hybrid key management scheme based on threshold mechanism and certification chain.
Simulation shows that with less increment munication overhead, our scheme can improve both certificate
ess rate and system security and better balances security and availability, and sa