无线传感器网络密钥管理研究
发布时间：2018-07-17 15:21
【摘要】：无线传感器网络(wirelesssensornetworks，WSN)通过大量部署在监测区域内的传感器节点采集网络覆盖范围内的感知对象信息，通过多跳通信方式将所采集的信息处理后传输给终端用户。无线传感器网络最重要的特点是其有限的资源和计算能力；其次，节点间的通信安全也是个重要问题。但是目前研究大多都关注于节能、网络协议和分布式数据库，安全问题一直未得到彻底解决。WSN的安全问题的解决方法在于建立安全、高效的密钥管理机制。 本文以无线传感器网络密钥管理方案为主要研究对象。首先叙述了无线传感器网络的发展背景和基本概念，主要包括国内外的研究情况和应用前景。接下来给出了无线传感器网络的基本概念和特点，其中包括无线传感器网络的体系结构、面临的安全问题和安全需求。接着分析了无线传感器网络密钥管理面临的资源制约和管理方案的评估标准，，列出了目前的一些典型的密钥管理方案，这里主要包括基于随机密钥预分配方案和基于KDC的密钥管理方案，对各种方案进行了安全分析和综合评估，指出了其中的优劣及应用范围。最后针对分层组织的无线传感器网络提出了一种基于哈希函数和随机变量的密钥分配(Keydistributionbasedonhashfunctionandrandomvariable)新方案。该方案中，一些节点形成簇，簇内的头节点称为簇头（CH），当其他节点完成信息感知后，由簇头处理信息并发送给基站（BS），网络中所有的节点周期性的更新预先部署的密钥以确保只有合法的节点发送处理过的信息，密钥更新时使用了一个哈希函数和基站广播的一个随机数字。
[Abstract]:Wireless sensor networks (WSN) collect the perceptual object information in the coverage of the network through a large number of sensor nodes deployed in the monitoring area, and transmit the collected information to the end user through multi-hop communication. The most important feature of wireless sensor networks is its limited resources and computing power. Secondly, the security of communication between nodes is also an important issue. However, most of the current researches focus on energy saving, network protocols and distributed databases. The solution to the security problem of .WSN is to establish a secure and efficient key management mechanism. This paper focuses on the key management scheme of wireless sensor networks. Firstly, the development background and basic concepts of wireless sensor networks are described, including the research situation and application prospect at home and abroad. Then the basic concepts and characteristics of wireless sensor networks are presented, including the architecture of wireless sensor networks, the security problems and security requirements faced by wireless sensor networks. Then it analyzes the resource constraints faced by key management in wireless sensor networks and the evaluation criteria of key management schemes, and lists some typical key management schemes. This paper mainly includes the scheme based on random key pre-distribution and the key management scheme based on KDC. The security analysis and comprehensive evaluation of each scheme are carried out, and the advantages and disadvantages of the scheme and its application range are pointed out. Finally, a new scheme of key distribution based on hashing function and random variable is proposed for hierarchical wireless sensor networks. In this scheme, some nodes form clusters, and the head nodes in the cluster are called cluster heads (Ch). The cluster head processes the information and sends it to the base station (BS). All nodes in the network periodically update the pre-deployed key to ensure that only legitimate nodes send the processed information. The key is updated using a hash function and a random number broadcast by the base station.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP212.9;TN918.4
本文编号：2130081
[Abstract]:Wireless sensor networks (WSN) collect the perceptual object information in the coverage of the network through a large number of sensor nodes deployed in the monitoring area, and transmit the collected information to the end user through multi-hop communication. The most important feature of wireless sensor networks is its limited resources and computing power. Secondly, the security of communication between nodes is also an important issue. However, most of the current researches focus on energy saving, network protocols and distributed databases. The solution to the security problem of .WSN is to establish a secure and efficient key management mechanism. This paper focuses on the key management scheme of wireless sensor networks. Firstly, the development background and basic concepts of wireless sensor networks are described, including the research situation and application prospect at home and abroad. Then the basic concepts and characteristics of wireless sensor networks are presented, including the architecture of wireless sensor networks, the security problems and security requirements faced by wireless sensor networks. Then it analyzes the resource constraints faced by key management in wireless sensor networks and the evaluation criteria of key management schemes, and lists some typical key management schemes. This paper mainly includes the scheme based on random key pre-distribution and the key management scheme based on KDC. The security analysis and comprehensive evaluation of each scheme are carried out, and the advantages and disadvantages of the scheme and its application range are pointed out. Finally, a new scheme of key distribution based on hashing function and random variable is proposed for hierarchical wireless sensor networks. In this scheme, some nodes form clusters, and the head nodes in the cluster are called cluster heads (Ch). The cluster head processes the information and sends it to the base station (BS). All nodes in the network periodically update the pre-deployed key to ensure that only legitimate nodes send the processed information. The key is updated using a hash function and a random number broadcast by the base station.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP212.9;TN918.4
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