而组密钥管理是安全组播的核心问题之一。
Group key management is one of the kernel problems in secure multicast.
IP多播组密钥管理问题是IP多播安全的核心问题。
IP multicast group key management is essential for the IP multicast security.
安全组播目前主要采用基于密钥树的组密钥管理算法。
The key tree based group key management algorithms are widely used in secure multicast.
首先本文深入研究了安全组播中基于密钥树的组密钥管理算法。
First of all, this dissertation extensively studied the group key management algorithms based on key tree in secure multicast.
本文提出了采用限高树密钥结构的分布式lkh组密钥管理协议。
This paper puts forward Distributed LKH group key management protocol based on HLTN key architecture.
该文分析比较了各种密钥管理方案，认为组密钥管理更适合于无线传感器网络。
Compared with all kinds of key management schemes, group key management is more suitable for wireless sensor network.
通过对现有的组密钥管理策略进行对比分析，为该领域的进一步研究提供了思路。
By comparing and analyzing the strategy of group key management in existence, it provides an idea of the further study in this field.
然而由于传感器网络自身资源的限制，使得传感器网络的组密钥管理面临巨大的挑战。
But group key management in WSN faces a great challenge because of the resources are constrained.
组通信是其重要的通信方式之一，可行和有效的组密钥管理机制是保障组通信安全的关键前提。
Group communication is its important communication method, in which a feasible and effective group key management mechanism is the key precondition for security.
提出了一种适用于多层组播服务的安全架构，介绍了组成员控制、组密钥管理以及数据的安全传输。
We propose a secure framework for multi-layer multicast applications and introduce the control of group members, the management of secret key and the secure transmission of data.
安全是多播研究中急需解决的问题。本文对多播安全中认证和组密钥管理这两个关键问题进行了研究。
Because of the importance and urgency of security to multicast, this thesis investigates two key issues, i. e. authentication and group key management, of multicast security.
论文重点对节能的密钥分发、安全和高效的组密钥更新以及密钥预分发等组密钥管理的关键问题进行研究。
The group key management problems this thesis studies mainly include energy-saving multicast key distribution, secure and efficient group rekeying, and key pre-distribution.
目前已有的组密钥管理协议主要包括组密钥分配协议和组密钥协商协议，总体来说，他们各有优缺点，适用于不同的情况。
At present, group key management mainly divided into goup key distribution and group key agreement, both of them have their own character and can be used in different applications.
并在集中式和分布式两种组密钥管理方案的基础上，提出了新的层簇式密钥管理架构，并解决了这两种方案存在的安全缺陷。
According to the root-controlling and distributing group key management schemes, this paper proposes a novel layer-cluster key management technique and resolves specific defects of the two schemes.
结合单钥加密和双钥加密的理论，分别给出了纵向的等级安全管理密钥管理方法和横向的协同工作安全管理的工作组密钥管理方法。
With the application of symmetric cipher and asymmetric cipher, a cryptographic key management scheme for hierarchy is presented and a workgroup cryptographic key management scheme is presented.
与传统网络不同的是传感器网络不存在这种可信节点，而且其资源十分有限，因此传统网络中的组密钥管理方案不适合传感器网络。
Different from the traditional networks, sensor networks don't have such reliable nodes and their resources are constrained. So all these schemes can't be used in sensor networks directly.
传统的组播密钥管理都假设所有合法组用户可以知道组密钥，这种假设对于商业组播是不现实的。
It is impractical for commercial multicast assuming that all group members know the group key in traditional multicast key management schemes.
选定的用户不在此密钥管理服务负责的管理组中。请选择其他用户。
The selected user is not in an administrative group that is serviced by this key management service. Make another choice.
在组播通信中，如何实现有效的分配、管理安全通信的密钥是组播密钥管理的研究范畴。
In multicast communication, how to distribute and manage keys for secure communication is the research scope of multicast key management.
空间信息网络存在不同的通信方式，网络拓扑结构动态多变，对组播密钥管理提出了特殊的要求。
There are many communication ways in space information network(SIN). The network topology changes dynamically, which brings out special requirements for multicast key management.
并通过对RSA公钥密码算法的改进，给出一种新的组播加密方法，进而给出相应的密钥管理方案。
Through some improvement to the RSA public key system, a new method of multicast encryption is put forward and then corresponding key management model is given.
该方案中成员私钥是由密钥管理者所分发的密钥和成员生成的密钥构成的三元组，从而使得签名具有强防陷害性。
In our scheme, the private key to a group member is a triple consisting of the key obtained from the key issuer and that generated by the member, thus realizing strong exculpability.
该文在分析组播通信安全需求的基础上，提出一种基于密钥矩阵的组播密钥管理方案。
According to the analysis of the security demand of multicast communication, a multicast key management scheme based on key matrix is proposed.
其中重点讨论了目前流行的组播密钥管理框架，密钥树，分隙密钥更新方案。
And we mainly focus on the distributed key management framework: IGKMP and lolus , the rekeying protocol based on key tree , and periodical rekeying strategies.
本文探讨的重点是组播密钥管理如何为组成员生成组密钥、分发组密钥和更新组密钥，以及由此产生的扩展性、健壮性和可靠性问题。
The emphases of this paper are to find methods for multicast key management, which is to generate, distribute and update keys and to solve the problem of scalability, robustness and reliability.
在分析现有的组播密钥管理方案的基础上，提出了基于子群的安全组播密钥管理方案。
On the based of analyzing the existing key management scheme, it proposes a key management scheme based on subgroup for secure multicast.
逻辑密钥树方案是一种集中式的组播密钥管理方案，有效地减轻了组管理器和组成员的负担，但是却没有优化组通信初始化的过程。
LKH scheme is a centralized multicast key management scheme and it lightens the burden of the sever and group members efficiently, but it doesn't present the process of initialization clearly.
逻辑密钥树方案是一种集中式的组播密钥管理方案，有效地减轻了组管理器和组成员的负担，但是却没有优化组通信初始化的过程。
LKH scheme is a centralized multicast key management scheme and it lightens the burden of the sever and group members efficiently, but it doesn't present the process of initialization clearly.
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