摘要： 提出了一种基于单向函数的满足动态安全性的组播密钥分配方案,比较了其与OFT方案的不同特点,使用该方案在组成员加入或退出时只需更改节点公开信息,减少了密钥更新所需的广播消息量,结果表明,该方案具有较高的可行性。

关键词: 组播密钥分配, 动态安全性, 单向函数, OFT方案

Abstract: This acticle gives a new multicast key distribution scheme satisfying dynamic security based on one-way function.Using this scheme the key distribution tree needs only changing a few of its key nodes public announcing information when group members join or leave the group.Thus this scheme improves the rekeying efficiency of the key distribution tree . Furthermore,this article compares this scheme with OFT scheme,the results show this scheme is practical.

中图分类号: 

• TP393