IPv6组播及其安全技术研究

【作者】 黄涛；

【导师】 傅光轩；

【作者基本信息】 贵州大学 ， 计算机应用， 2008， 硕士

【摘要】 随着下一代互联网技术的发展,网络的视音频传播已经成为一个重要的应用。当用单播技术实现这种大数据量的应用时,随着用户数量的增加会急剧消耗网络带宽,降低了服务水准,因此难以实现大规模的群组应用。组播技术克服了单播技术传输大数据量时的缺陷,得到了更广泛的研究和应用。组播技术采用群组发送的方式,用路由器来复制数据包,保证任何时候每条链路中只有一份数据包,因此节约了网络带宽。这种特性使组播技术在大规模群组通信方面有着不可比拟的优越性。IPv6协议具有128位的地址空间、地址自动配置机制、安全认证机制等众多优点,必将取代IPv4而成为下一代互联网的标准网络协议。而IPv6的组播协议是IPv6协议栈的一个必须且重要的组成部分,所以研究实现基于IPv6的组播是非常必要的。IPv6组播技术实现和部署的关键问题在于其安全性,组播安全有多方面的需求,特别是在组播组成员动态变动的情况下,怎样保证通信的机密性以及怎样控制组播成员加入/离开至关重要,这需要研究和实现相应的组播密钥管理方案。本文首先介绍了IPv6组播技术的基础知识、IPv6下的组播编程技术,并搭建了IPv6组播实验平台,开发基于IPv6组播的视频会议系统,基本实现了IPv6组播的实际应用。同时,对IPv6组播安全技术进行了研究,在分析现有的组播密钥管理方案的基础上,提出了一种高效的基于IPv6的安全组播密钥管理方案。并对新方案在执行效率、安全性方面进行了分析。最后,提出了当前IPv6组播技术及其安全性方面存在的问题,并提出了下一步的研究方向。更多还原

【Abstract】 With the development of the next Internet technology, the transmissions of audio and video are becoming a very important implementation. When applied Unicast technology in implementing these heavy load applications, the increasing of users makes bandwidth consumed as quickly as possible, at the same time the service level will be declined, so it’s difficult to implement heavy load applications with Unicast. Multicast technology overcomes the disadvantage of Unicast in implementing these heavy load applications. Now Multicast technology is researched and implemented avidly.Multicast technology applies the method of group transmissions, using Router to copy data packages, it promised only one data package in every link at any time, and saved bandwidth. This characteristic makes Multicast technology having enormous excellence on the communications of large group.IPv6 has many advantages, such as 128-bit address space; address auto-configuration and security authorization mechanism. It will be the normal protocol of the next Internet replacing IPv4. Multicast of IPv6 is an important and integrant part of IPv6 stack, so it’s necessary to research and implement Multicast applications on the based of IPv6.Security is the key fact of disposing IPv6 Multicast technology. There are many requirements on secure multicast, specially, in the case of the group members dynamic changing, they are important to know that how to ensure the security of group communications and how to control the joined/left of group members. So it’s necessary to research and implement relevant frame of key management.At the beginning of this paper, the base of IPv6 Multicast technology, the application programming technology in IPv6 are fully discussed. Then it describes the implementing of IPv6 Multicast. Based on analyzing the IPv6 Multicast technology, it proposes a video conference system and its realization. At the same time, this paper studies IPv6 secure multicast technology. On the based of analyzing the existing key management scheme, it proposes a key management scheme based on IPv6, and analyzes the efficiency and security of the new scheme .Finally, the objections of IPv6 multicast and its security are mentioned and the next research is prospected.更多还原