The security request of security multicast is different, including identity authentication, data authentication, data integrality, key updating etc.
安全多播系统对安全的需求比较复杂，包括身份认证、数据认证、数据完整性、密钥更新等多方面需求。
Source authentication is the key and difficulty problem through the multicast. And it also become the basis and precondition for realizing the security multicast.
而组播数据源认证又是整个安全组播通信中的重点和难点问题，也是真正实现安全组播通信的基础和前提。
On the basis of discussing above, a security multicast system model based on GDOI Protocol is proposed. The design idea is described and the main data structures and source programs are provided.
在前面讨论的基础上，在组成员方提出了一个基于GDOI协议的安全多播主机结构模型，描述了各个模块的设计思想，给出了主要数据结构和源程序。
JXTA also has support in the authentication and authorization areas providing end-to-end application security. The authors also commented on the reliable multicast feature in JGroups framework.
JXTA还支持认证和授权，提供了端到端的安全性。
Multicast is the current prime network technique focusing on the group receivers, but the absence of security mechanism has limited its application in various network services.
组播是面向群组接收者的首选网络通信技术，但缺乏安全机制限制了组播在各种网络业务中的广泛应用。
The issue of multicast security consists of data confidentiality, group management, data source authentication and so on.
组播安全问题包括：数据保密、组管理和访问控制、源认证等多个方面。
The fingerprint embedding is recently research key of information security in multicast environment.
多播环境下，指纹嵌入应用技术是目前信息安全研究的焦点。
The DVB-RCS security standard is discussed and the method of improvement over drawbacks of multicast security performance in current standard is provided.
讨论了DVB - RCS标准的安全规范，并针对现有规范在多播安全性上的缺陷，提出了改进方案。
According to the analysis of the security demand of multicast communication, a multicast key management scheme based on key matrix is proposed.
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。
The framework improves the security and management of multi-layer multicast services.
其安全架构能够提高多层组播服务的安全性和可管理性。
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。
The integration of multicast, digital watermarking and digital fingerprinting is an important aspect of multicast security, the related protocol design is difficult.
多播、水印、指纹的结合是多播安全的一个重要方面，相关的协议设计具有一定的难度。
The IKE concept can not be used for securing group communication based on IP multicast services since it is only addressed to pairwise security.
IKE的概念并不能用于基于IP多播服务的安全组播通信，因为它只能用于主机对之间的安全。
Multicast technology includes a number of aspects, such as multicast group, multicast address, multicast protocols, multicast reliability, multicast security, etc.
组播技术包括了组播组、组播地址、组播协议、组播可靠性和组播安全性等很多方面的内容。
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 security requirements of multicast were presented, the advantages and disadvantages of presented schemes were analyzed, and several main research directions were pointed out as well.
指出了组播通信的安全要求，分析了现有组密钥方案的优缺点。
However, this is achieved at the expense of introducing an important security hole in the multicast infrastructure.
然而，这是以带来重要的组播基础设施安全漏洞为代价实现的。
Source authentication is an important and difficult problem in multicast security, but no approaches can satisfy all applications now.
组播通信源认证是组播安全中的重点和难点问题之一，但目前没有一种方法能够满足所有组播应用领域的需求。
This scheme deal with subgroup and group member dynamic efficiently and has improved multicast scalability and security.
该模式处理子组及组成员的动态性非常有效，并且有很好的扩展性和很高的安全性。
Yet, existing security protocols for multicast offer only partial solutions.
然而，现有的组播安全协议仅能提供部分的解决方法。
One of the main challenges of securing multicast communication is source authentication. It is therefore critical to provide sound security mechanisms for multicast communication.
安全组播通信的主要挑战之一是源认证，而其关键是为组播通信提供可靠的安全机制。
Multicast source authentication has been regarded as one of a base security issues in multicast technology.
组播源认证是安全组播要解决的重要问题之一。
Multicast communication is becoming the basis for a growing number of applications. It is therefor critical to provide sound security mechanisms for multicast communication.
组播通信正成为不断增长的应用基础，而其关键是要为组播通信提供可靠的安全机制。
It not only limits the capacity of ATN and its further improvement, but also can't support the security, privacy and multicast technology.
它不仅限制了ATN的容量及其进一步扩展，而且也不能支持安全性、保密性和组播技术。
The difficulty of utilizing public key broadcast encryption in secure multicast is keep balance between implementation cost and security.
应用公钥广播加密进行安全组播的难点是如何更有效地权衡实现代价和安全性。
Security issue of multicast technology is totally different from that of unicast.
多播在安全性方面与普通的单播有着显著的不同。
Since the IKE is only addressed to protected negotiation of pairwise security data at the beginning, it has some demerits at communication based on IP multicast services.
由于IKE设计之初致力于点对点之间的安全参数协商，应用于IP组播情况有许多局限之处。
So the type of multicast application has become a important factor. For example, the security question of multicast member's expanding should be thought in distance education;
因此，组播的应用类型已经成为了决定安全组播应用的一个重要因素，如在远程教育中应重点考虑组播组扩展后的安全问题；
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。
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。
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