摘要
通过分析指出曹国梁等人给出的基于广义猫映射的组播密钥管理方案不满足组成员私钥独立性的安全性要求。利用单向函数对基于广义猫映射的组播密钥管理方案进行改进,改进方案满足组成员私钥独立性的安全性要求,且比曹国梁等人的组播密钥管理方案具有更高的安全性,同时还具有较低的计算开销和通信开销。
It is indicated that Cao Guoliang et al＇s multicast key management scheme based on generalized cat map does not satisfy the independent security requirement of individual keys of group members.A modification scheme was proposed by using one way function.The presented scheme satisfies the independent security requirement of individual keys of group members.Compared with Cao Guoliang et al＇s scheme,this modification scheme has higher security and lower computation and communication overheads.
出处
《计算机应用》
CSCD
北大核心
2011年第4期975-977,共3页
journal of Computer Applications
基金
国家科技支撑计划项目(2008BAH37B08)
关键词
组播安全
组播密钥管理
私钥独立性
广义猫映射
单向函数
multicast security
multicast key management
independence of individual key
generalized cat map
one way function
