车联网环境下的群密钥管理研究

发布时间：2018-01-10 10:04

本文关键词：车联网环境下的群密钥管理研究　出处：《浙江工商大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着物联网技术的飞速发展及广泛应用,车联网作为物联网应用的一个重要分支也受到越来越广泛的关注。车联网是智能交通系统ITS (Intelligent Transportation System)与物联网技术相融合的时代产物,车联网技术的应用不仅改善了智能交通管理系统,为人们提供了更加安全可靠的驾驶环境,而且为车载用户提供了更多的增值和娱乐服务,满足了车载用户的娱乐和办公需求。车联网群组通信作为车联网通信系统的主要方式,势必成为研究的热点和重点。车联网环境下的群组通信系统中,车辆节点规模巨大,群组成员不断变化更新,报文丢包率大且通讯信道开放,使得车联网群组通信面临诸多安全威胁：恶意攻击者可能伪造虚假路况信息、窃听和分析无线信道中的广播通讯消息,甚至跟踪车辆节点等。本文以车联网环境下的车辆节点为研究对象,重点研究如何实现车辆群组(Group)之间的安全通信,如何建立安全的群会话密钥等问题。群会话密钥的建立主要有两种方式：群密钥分发和群密钥协商。群密钥分发协议由群管理者统一分发群密钥,协议构造相对简单,管理方便。群密钥协商协议则由群组中的每个成员共同协商计算出群密钥,任何一方都不能预先确定群会话密钥,协议算法相对复杂,信息交互量大。本文针对这两种协议方式,分别提出了两种适用于车联网环境下的群密钥分发和群密钥协商方案,论文主要贡献如下： (1) V2I (Vehicle to Infrastructure)群密钥分发方案允许合法车辆节点在丢失一段时间的广播消息后,仍能够恢复出之前的群会话密钥。网络生命周期长久,会话周期不限制于m的大小。我们的方案很大程度上大降低了网路流量开销和RSU的通讯负荷,更加适用于现实的车联网环境。 (2) V2V (Vehicle to Vehicle)群会话密钥协商方案能够检测出所有的恶意车辆节点,允许所有诚实的节点共同协商计算出共享的群会话密钥,当节点频繁的加入或离开群组时,可以直接快速的更新群会话密钥,大大提高了群会话密钥的更新效率。最后,本文实验分析结果表明我们的方案具有较好的安全性和抗攻击性,且能够取得较好的性能开销。
[Abstract]:With the rapid development of Internet technology and the wide application of Internet of vehicles, as an important branch of networking applications has attracted more and more attentions. Car networking intelligent transportation system ITS (Intelligent Transportation System) product of the times and the integration of networking technology, application of vehicle networking technology not only improve the intelligent traffic management system that provides a more secure and reliable driving environment for people, but also provide more value-added services for mobile users and entertainment, to meet the user's demand for office and entertainment vehicle. Vehicle networking group communication as the main way of car networking communication system, will become the research focus.
Group communication system of car networking environment, vehicle node scale, group members continuously change and update, packet loss rate and open communication channels, making the car networking group communication is facing many security threats: a malicious attacker could fake traffic information, eavesdropping and analysis of radio communication messages in wireless channels, even tracking vehicle nodes. The car networking vehicle node environment as the research object, focuses on how to realize the vehicle group (Group) of secure communication, how to establish a group of session key issues such as security.
A group session key there are two main ways: group key distribution and key negotiation group. Group key agreement by the group manager unified distributed group key agreement, relatively simple, convenient management. Key agreement by each member in the group of joint consultation to calculate group key, any one party cannot advance to determine the group session key agreement algorithm is relatively complex, large amount of information interaction. In this paper the two kinds of protocol, we proposed two different network environment and group key distribution of group key agreement scheme applicable to the car, the main contributions are as follows:
(1) V2I (Vehicle to Infrastructure) scheme allows legitimate vehicle nodes in the broadcast message is lost after a period of time of group key distribution, still can restore the group session key before. The network life cycle is long, the session is not limited to the size of the M cycle. Our scheme greatly reduces the burden of communication network traffic overhead and RSU, car networking environment is more suitable for the reality.
(2) V2V (Vehicle to Vehicle) group session key agreement scheme can detect the malicious node vehicle all, allowing all honest nodes together to calculate the group session key sharing, when nodes join or leave the group, can directly and quickly update the group session key, greatly improving the efficiency of updating the group session the key.
Finally, the experimental analysis results show that our scheme has good security and anti attack, and can achieve better performance overhead.

【学位授予单位】：浙江工商大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U495;TN918.4

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