The scheme provides group key secrecy, forward secrecy and backward secrecy.
它提供的安全属性包括群组密钥保密性、前向保密和后向保密。
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。
Its core services provide authenticated group key agreement in relatively small dynamic peer groups.
它的核心服务是为一个相对较小的多播组提供验证的组密钥交换。
An authenticated group key agreement scheme with admission control for dynamic peer groups was presented.
针对动态对等群组设计了一个具有许可控制功能并且可认证的密钥协商方案。
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。
Combined with complete binary tree architecture, a new identity-based group key agreement protocol is proposed in this paper.
文中结合完全二叉树结构，提出了一种新的基于身份的群密钥协商协议。
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。
This scheme is characterized by the following properties:(1) Participants only need two-round communications to get the group key;
该方案具有如下特点：（1）协议仅需要两轮交互，就可以实现组密钥协商；
Group key agreement scheme is more adaptable than group key distribution in DPG in which its membership can be frequently changed.
在群成员随时变动的动态对等群组中，群密钥协商比群密钥分配更适用。
Dynamic security of group key distribution is always the key point and difficult point in the research field of multicast security.
群密钥分配的动态安全性一直是组播安全研究的重点和难点。
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。
A group key distribution scheme utilizing a polynomial expansion is proposed, which features in no traditional encryption and decryption.
提出了一种利用多项式展开的组密钥分配方案，其特点是不使用传统加密和解密。
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。
Compared with protocols under the CRS model, the group key exchange protocol can greatly reduce the risk of putting all trusts in one place.
和采用CRS模型的协议相比，降低了把整个信任集中于一处带来的风险。
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。
Based on tree and threshold idea Wang et al. proposed an efficient group key agreement protocol (TTS) and claimed that their protocol is secure.
基于树结构与门限的思想，王志伟等人提出了一个高效的组密钥协商协议(TTS协议)，并认为他们的协议是安全的。
The proposed group key establishment scheme reduces both the computational overhead and communication costs and has the high security and usability.
提出的组密钥建立方案有效地降低了组密钥建立过程的计算和通信开销，并具有较高的安全性和可用性。
There are three kind of key agreement protocols: two-party key agreement protocols, three-party key agreement protocols, group key agreement protocols.
根据参与者数目的不同，密钥协商协议分为两方密钥协商协议、三方密钥协商协议和组密钥协商协议。
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。
In order to decrease the storage cost of group key distribution protocol, a secure group key distribute protocol based on the status key tree is proposed.
为了减少群组密钥分发协议的存储代价，提出了一种基于状态密钥树的群组密钥分发协议。
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。
A new group key agreement protocol was proposed in this paper. In this protocol, the participants could verify the honesty of other participants by a series of algorithms.
提出了一种新的群组密钥协商协议，在协议中，参与者可以通过一系列算法对其他参与者的真伪进行验证。
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。
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。
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