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secure multicast groups
相关语句
  安全多播
     Research on Scalable Distributed Key Management Protocol for Secure Multicast Groups
     可扩展分布式安全多播密钥管理协议研究
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  “secure multicast groups”译为未确定词的双语例句
     This paper proposes SMSA(Secure Multicast Service Architecture),which performs the group security management instead of the multicast initiator. SMSA supports many secure multicast groups simultaneously.
     本文提出了可代替组播发起者来承担组播安全管理的安全组播服务体系结构SM SA(SecureM u lticast Serv ice A rch itecture),SM SA可以同时为大量组播组提供安全服务.
短句来源
  相似匹配句对
     On Secure Multicast Rekeying
     安全多播密钥更新研究
短句来源
     Secure Multicast Based on SIP
     基于SIP的安全组播
短句来源
     Secure E-mail
     安全电子邮件
短句来源
     On the Multicast Routing
     多点通信的路由问题
短句来源
     Multicast on Internet
     互连网上的多播技术
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The paper studied the key management problem in a secure multicast group with a single sender and multiple receivers.we show how to minimize the number of keys to be stored by the group controller. An explicit design algorithm is also presented.

讨论安全多播通信中密钥管理问题 .借鉴多目标优化问题中的解法 ,提出了一种基于点覆盖求解算法的密钥分配机制的方案 ,该方案采用全局优化的自适应概率搜索机制 ,大大提高了算法的效率 ,适用于处理大规模多播群组成员动态变化的状况

With the development of applications on Internet, IP multicast has been widely used. Now, research on multicast has become an active area, and secure multicast, which is the key technology in muldcast applications, gets much attention. In this article, we describe the core of secure multicast-group key management, mainly compare the centralized group key management methods, and future works are also analyzed.

随着因特网上应用的发展,IP组播技术得到了广泛的应用。现在对于组播技术的学术研究已经 成为了一个活跃的领域,而作为组播应用中关键技术的安全组播也得到了很大的重视。在这篇文章中,我们描 述了安全组播的核心——组密钥管理,主要对集中式组密钥管理方法进行比较,并指出了未来的研究方向。

LKH (logical key hierarchy) is a basic method in secure multicast group rekeying. LKH is efficient in real time group rekeying since it does not distinguish the different probability among the group members. However when members have diverse changing probability or different changing modes, the gap between LKH and the optimal algorithm will become bigger. If the probabilities of members have been known, LKH can be improved someway, but the changing probability of members can not be known exactly....

LKH (logical key hierarchy) is a basic method in secure multicast group rekeying. LKH is efficient in real time group rekeying since it does not distinguish the different probability among the group members. However when members have diverse changing probability or different changing modes, the gap between LKH and the optimal algorithm will become bigger. If the probabilities of members have been known, LKH can be improved someway, but the changing probability of members can not be known exactly. Based on the basic knowledge of group members, in R-LKH (Refined-LKH), the active members and inactive members are partitioned and set on different locations in the logical key tree firstly. Then the concept “dirty path” is introduced in order to reduce the repeated rekeying overhead in the same path. All these can decrease the number of encryption in group manager and the network communication overhead. The simulation result indicate that R-LKH has a better improvement over LKH if the multicast group members’ behavior could be distinguished “approximately”.

LKH(logical key hierarchy)方法是安全多播实时密钥更新中常用的方法.LKH对所有成员的行为没有进行区分,在具有相同成员变化概率的情况下,具有较高的效率.但当组成员具有不同的变化概率,或者成员行为模式不同时,LKH的效率与最佳值的差距将会变大.在已知成员变化概率的情况下,可对LKH方法进行一定的改进,但要确切了解每个成员的变化概率,事实上是不可能的.R-LKH(Refined-LKH)方法无须准确了解组成员的变化概率,在已知基本成员变化信息的基础上,先将组成员分为活跃成员和非活跃成员两部分,分别将其安排在密钥树的不同位置,然后通过引入“脏路径”的概念,以尽可能地减少同一路径上密钥的反复更新,从而达到了减少管理者加密次数,降低通信开销的目的.仿真实验结果表明,在对多播组成员的行为方式进行“大致”区分的情况下,R-LKH方法比LKH有较大的优势.

 
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