摘要
设计高效的密钥协商方案是动态安全组播的难点。提出一个应用椭圆曲线密码体制在基于CDS(Connected Dominating Set)结构的动态安全组播中进行密钥协商的方案,具体地分析了各个子组和整个大的组播组的密钥协商过程,以及组成员动态变化时密钥的更新过程。结果表明,该方案在降低计算和通信代价方面取得了较好的效果,且满足密钥协商的安全要求。
Designing efficient key-agreement scheme is a difficult task in dynamic secure muhicast. In this paper,we propose a novel key agreement scheme which uses Elliptic Curve Cryptosystem in CDS-based dynamic secure muhicast. Then the procedures of key agreement in every subgroup and entire multicast group and the updating process of group keys along with the dynamic change of group members are analyzed in detail. The result shows that our scheme is efficient in cutting down the costs of computation and communication and also satisfies the security requirements of the key agreement.
出处
《计算机应用与软件》
CSCD
2009年第12期37-39,共3页
Computer Applications and Software
基金
国家自然科学基金项目(60673070)
江苏省自然科学基金项目(BK2006217)
关键词
安全组播
密钥协商
CDS
椭圆曲线密码体制
Secure muhicast Key agreement Connected dominating set（CDS） Elliptic curve cryptosystem
