This raises the problem of group key management.
这导致了群组密钥管理问题。
Group key management is one of the kernel problems in secure multicast.
而组密钥管理是安全组播的核心问题之一。
IP multicast group key management is essential for the IP multicast security.
IP多播组密钥管理问题是IP多播安全的核心问题。
The key tree based group key management algorithms are widely used in secure multicast.
安全组播目前主要采用基于密钥树的组密钥管理算法。
The leveled group key management schemes in distributed information systems are proposed.
提出了分布式信息系统中的分级群组密钥管理方案。
But group key management in WSN faces a great challenge because of the resources are constrained.
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。
This paper puts forward Distributed LKH group key management protocol based on HLTN key architecture.
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。
In group key management, the approach based on the key-tree is widely used to achieve logarithmic rekeying costs.
在群组密钥管理中，基于密钥树的方法可以达到对数级别的密钥更新代价而被广泛采用。
Compared with all kinds of key management schemes, group key management is more suitable for wireless sensor network.
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。
First of all, this dissertation extensively studied the group key management algorithms based on key tree 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。
By comparing and analyzing the strategy of group key management in existence, it provides an idea of the further study in this field.
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。
Secure group Communication System has been an active research domain, in which the group key management scheme is the most challenging work.
安全群组通信的研究是一个十分活跃的研究领域，群组密钥管理机制的研究是其中最具有挑战性的工作。
Finally, this paper introduces methods of group key management for extremely large-scale network, which can enlarge the maximum supportable network size.
最后介绍在网络规模极大的情况下，可以采用的群密钥管理方法，它改进了方案可支持的网络规模。
Group communication is its important communication method, in which a feasible and effective group key management mechanism is the key precondition for security.
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。
The traditional group key management doesn't account for the difficulties caused by the characteristics of wireless mobile network, so it can't be applied directly.
传统域密钥管理方案缺乏考虑无线移动网络自身特点给域密钥管理带来的困难，很难直接适用。
Currently, the major sub-areas of security research include secure routing; secure group communications; intrusion detection, authentication and group key management etc.
目前，移动自组网络安全技术较为集中的研究领域包括安全路由技术、安全组通信技术、认证技术、入侵检测以及密钥管理技术等。
The group key management problems this thesis studies mainly include energy-saving multicast key distribution, secure and efficient group rekeying, and key pre-distribution.
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。
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.
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。
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.
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。
An inclined tree-group key management scheme based on elliptic curve cryptosystem is presented in this paper, which needs to renew only several node keys to provide perfect secrecy.
本文提出基于椭圆曲线密钥体制的斜树密钥管理方案，算法只需更新少量密钥就能满足系统的安全需求。
At present, group key management mainly divided into centralized, distributed and hierarchical forms, all of them have their own character and can be used in different applications.
目前的多播密钥管理方案主要包括集中式、分布式和分层分组式，它们各有优缺点，适用于不同的情况。
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.
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。
It is impractical for commercial multicast assuming that all group members know the group key in traditional multicast key management schemes.
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。
Alongside its UK offices, the group has an office in Barcelona which serves the main local and international waste management agencies as well as key industrial multinational companies.
除了英国办事处之外，我们在巴塞罗那有个办事处，服务于当地的和国际上的大型废物管理机构，以及主要跨国工业公司。
The device with global positioning system (GPS) localization and communication with monitor and control center on construction machinery is a key equipment for construction machinery group management.
智能化工程机械的GPS定位与监控中心的通信装置是实现工程机械机群化管理的关键装置。
The selected user is not in an administrative group that is serviced by this key management service. Make another choice.
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。
On this basis, according to the needs of cross-department collaboration for Group post-sales service, service management system core functions and key processes is elaborated.
在此基础上，根据宏天集团对于售后服务工作跨部门协作的需求，详细阐述了售后服务管理系统的核心功能和主要流程。
With acceleration of expansion paces of the OCT Group, the business of OCT International Hotel Management Co. Ltd. has reached key cities in east and southwest China.
随着华侨城集团区域外拓展步伐不断加快，华侨城国际酒店管理公司业务扩展的触角已延伸到华东、西南等重要城市。
Group management plays a key role in the level of management in power supply enterprises, which is to a great extent decided by group leaders.
搞好班组管理是提高供电企业管理水平的基础，而搞好班组管理的关键在于班组长建设。
Group management plays a key role in the level of management in power supply enterprises, which is to a great extent decided by group leaders.
搞好班组管理是提高供电企业管理水平的基础，而搞好班组管理的关键在于班组长建设。
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