无线传感器网络密钥分布方案研究

无线传感器网络广泛应用于目标跟踪、环境监测、军事感应和地震活动测试等方面。网络安全是无线传感器网络应用的关键因素。在无线传感器网络安全结构中,节点的密钥分布是其中的重要一环。资源有限的大规模无线传感器网络的部署需要高效的节点密钥分布机制。高效的节点密钥分布方案能加强网络连通性、提高抵抗节点捕获攻击的能力、减小节点能量的消耗以及扩展节点通信范围。本文分析了密钥分布的安全要求,着重从密钥的产生、密钥连接的建立和性能方面描述了当前典型的密钥分布方案,并比较和分析了这些算法的特点和安全性能。最后结合该领域当前研究现状,指出无线传感器网络密钥分布未来可能的研究方向。     

无线传感器网络密钥预分配与动态分配策略

为了实现无线传感器网络中的安全通讯,需要对传感器结点间传递的信息进行加密。由于受每个传感器结点自身资源的限制,传统网络中使用的密钥分配策略,并不适用于无线传感器网络。文章提出了一种基于结点位置对密钥进行预分配和动态分配相结合的密钥分配策略,通过构造一棵密钥管理树实现了分布式和集中式密钥管理的结合。应用这一策略构建的传感器网络其安全性和连通性有明显提高。     

基于标识的无线传感器网络密钥预分配方案

密钥分配是无线传感器网络中极具挑战性的安全问题之一.为了实现无线传感器网络中的安全通讯,需要对传感器结点间传递的信息进行加密.由于受每个传感器结点自身资源的限制,传统网络中使用的密钥分配策略,并不适用于无线传感器网络.提出了基于结点ID的密钥预分配方案,实现了非对称和对称密钥体制、分布式和集中式密钥管理的结合,有效地提高了传感器网络其安全性和连通性.     

基于身份的无线传感器网络密钥系统

无线传感器络（WSN）是一类由众多微型传感器节点通过自组织的方式构成的网络。随着在军事、环境监测等方面的应用逐渐成为现实,其有效和安全通信问题由于自身的特性（如能量、计算能力和节点存储资源等的局限性）而显得更加突出。本文首先比较详细地介绍了无线传感器网络安全结构及其面临的问题;其次重点讨论了无线传感器网络密钥系统相关的研究现状;然后给出了一种有效的基于身份的无线传感器网络密钥系统方案及与其它方案的仿真比较实验。仿真实验结果表明,我们方案较其它密钥系统方案在处理时间和节点存储需求方面具有优势。     

Effective Key Management Protocol for Extremely Self-Motivated Environment

Ad hoc networks provide solutions to a variety of deployed applications by creating networks on-the-fly. Key management is a significant issue for adequate security. To ensure secure group communication, keys need to be changed whenever the group changes. The highly dynamic nature of ad hoc networks makes this task challenging. The major problems for key management techniques to group applications are inefficiency and out-of-synchronization. The proposed cluster-based batch re-keying has a significant effect to unravel these problems.     

Effective Key Management Protocol for Extremely Self-Motivated Environment

ABSTRACT

Ad hoc networks provide solutions to a variety of deployed applications by creating networks on-the-fly. Key management is a significant issue for adequate security. To ensure secure group communication, keys need to be changed whenever the group changes. The highly dynamic nature of ad hoc networks makes this task challenging. The major problems for key management techniques to group applications are inefficiency and out-of-synchronization. The proposed cluster-based batch re-keying has a significant effect to unravel these problems.     

无线传感器网络中间件研究进展

无线传感器网络作为一种新兴的技术,受到了学术界和工业界的广泛关注.然而随着传感器网络及其应用的发展,系统的复杂性也随之增加,与传统网络相比无限传感器网络又具有其独特的特征,使得无线传感器网络的程序开发变得更加困难.中间件提供了一个编程抽象,方便了应用程序的开发,缩减了应用程序和底层设备的间隙.针对无线传感器网络的特点,分析了无线传感器网络中间件设计面临的问题,对有关设计方法进行了分类评述,并对几种典型中间件进行了比较,最后从通信范式、QoS支持和安全等方面提出了一些改进思路.     

Simple,extensible and flexible random key predistribution schemes for wireless sensor networks using reusable key pools

Sensor nodes are tiny, low-power, computationally limited and battery constrained electromechanical devices. A sensor node contains a sensing unit and a wireless communication unit. Sensor nodes are deployed over a field for sensing an event data in the environment and transfer it towards a base station over its wireless channel. In a typical application, vast amount of sensor nodes are deployed over a field which constitute a sensor network. Sensor nodes must be customized for a specific sensor network application before the deployment. This customization is needed not only for underlying networking application, but also for security related configurations. Random key predistribution mechanisms have been proposed to provide security for wireless sensor networks. In the literature, there are well known random key predistribution schemes. Some of these schemes are secure, but quite complex to apply in real-world applications due to their node-based customization requirements, while some other are easily applicable but they do not offer reasonable security. In this paper, we propose random key predistribution schemes for wireless sensor networks that provide varying ranges of security. The proposed schemes are easily applicable in real world scenarios due to their simplicity and relaxed node customization requirements. In this respect, our schemes provide a tradeoff. Moreover, our proposed schemes show a good extensibility property. We assume prior deployment knowledge. We examine performance of our schemes and compare them with well known random key predistribution schemes.     

分簇无线传感器网络中的密钥分组管理方案研究

由于无线传感器网络中节点有限的处理能力、内存和电源,使得传统密钥技术无法直接应用到传感器网络中,因此安全成为这类网络的一大挑战;但是,仅仅为了节约能源而设计的密钥管理方式可能不能成为一个合适的安全框架;在这里我们提出了一种安全的密钥分簇管理方案,按传感器节点在部署区域内测量信号的安全等级不同把节点分成两类:sink节点和普通节点,Sink节点除了对环境数据进行测量还具备对网内数据进行初步处理的能力,而普通节点仅测量环境数据及传输.     

浅析无线传感器网络的密钥管理

集传感器技术、嵌入式计算技术、分布式信息处理技术及无线通信技术于一体的无线传感器网络,因其广阔的应用前景而受到学术界和工业界的高度重视。在大多数应用环境中用户对无限传感器网络的安全能力有很高的要求,因此安全成为制约无限传感器网络广泛应用的关键。为此文章深入分析和讨论了无线传感器网络密钥管理方面的一些基础内容,并主要对目前一些经典的密钥管理方案进行原理阐述和性能分析。     

浅析无线传感器网络的密钥管理

集传感器技术、嵌入式计算技术、分布式信息处理技术及无线通信技术于一体的无线传感器网络,因其广阔的应用前景而受到学术界和工业界的高度重视。在大多数应用环境中用户对无限传感器网络的安全能力有很高的要求,因此安全成为制约无限传感器网络广泛应用的关键。为此文章深入分析和讨论了无线传感器网络密钥管理方面的一些基础内容,并主要对目前一些经典的密钥管理方案进行原理阐述和性能分析。     

无线传感器网络中动态密钥管理方案的研究

无线传感器网络的分布式、自组织特性使其广泛应用于商业和军事应用领域中.密钥管理作为传感器网络中提供安全功能的基本服务,在认证和加密过程中起着至关重要的作用.提出了一种适用于无线传感器网络的基于分组的动态密钥管理方案,此方案在实现时并不需要使用基站和簇头节点,从而保证了方案的通用性,同时动态密钥更新特性又进一步确保了传感器网络的安全不受被捕获节点的影响.本文最后分析了方案的连通性和安全性特性.     

一种新的传感器网络密钥分配方案

密钥分配对于无线传感器网络（WSN）的安全起着基础性作用。由于传感器网络规模大、节点资源非常受限等特点,传统的基于公钥和可信任密钥分配中心等方式不能使用。提出了一种新的WSN密钥分配方案,并对其存储量、通信量、计算量和安全性进行了分析。该方案基于安全两方计算,计算负载小,安全性高,适合传感器网络。     

无线传感器网络密钥分配协议研究

密钥分配协议对于无线传感器网络的安全起着基础性作用。由于传感器网络大规模、节点资源非常受限、分布式等特点，传统的基于公钥和可信任的密钥分配中心等方式不能实用。本文系统针对传感器网络特点，提出密钥管理协议的需求与性能指标，系统阐述了几种当前比较典型的密钥预分配协议：基于初始信任、随机密钥预分配以及各种改进方案等，分析比较其优缺点，并提出了进一步研究的方向。     

Dynamic key management in wireless sensor networks: A survey

Wireless sensor networks (WSNs) have a vast field of applications, including environment monitoring, battlefield surveillance and target tracking systems. As WSNs are usually deployed in remote or even hostile environments and sensor nodes are prone to node compromise attacks, the adoption of dynamic key management is extremely important. However, the resource-constrained nature of sensor nodes hinders the use of dynamic key management solutions designed for wired and ad hoc networks. Hence, many dynamic key management schemes have been proposed for WSNs recently. This paper investigates the special requirements of dynamic key management in sensor network environments, and introduces several basic evaluation metrics. In this work, the state of the art dynamic key management schemes are classified into different groups and summarized based on the evaluation metrics. Finally, several possible future research directions for dynamic key management are provided.     

无线传感网络中安全密钥管理机制

Recent advancements in wireless communication and microchip techniques have accelerated the development of wireless sensor networks (WSN). Key management in WSN is a critical and challenging problem because of the inner characteristics of sensor networks: deployed in hostile environments, limited resource and ad hoc nature. This paper investigates the constraints and special requirements of key management in sensor network environment, and some basic evaluation metrics are introduced. The key pre-distribution scheme is thought as the most suitable solution for key management problem in wireless sensor networks. It can be classified into four classes: pure probabilistic key predistribution, polynomial-based, Blom′s matrix-based, and deterministic key predistribution schemes. In each class of methods, the related research papers are discussed based on the basic evaluation metrics. Finally, the possible research directions in key management are discussed.     

无线传感器网络节点间认证及密钥协商协议

无线传感器网络的特性使它面临着比传统无线网络更大的安全挑战,其安全解决方案必须兼顾安全性和系统性能等因素。节点间认证及密钥协商是构建安全网络最基本的协议,是密钥管理协议和安全路由协议等的实现基础。很明显,包括传统Adhoc在内的各种无线网络领域中的安全认证及密钥协商机制都无法适用于无线传感器网络。为此,在充分考虑无线网络攻击方法和无线传感器网络自身特点的基础上,结合基于ID的公钥密码技术,提出了椭圆曲线双线性对上的无线传感器网络节点安全认证及密钥协商协议。分析发现,该协议不仅满足安全性要求,同时,能够适合无线传感器网络的特殊应用要求。     

一种无线传感器网络的密钥管理方案

目前很多无线传感器网络的应用是建立在群组式通讯的模式之上,如何建立一个用以加密群组通讯的组密钥,来防范攻击者窃听无线传感器网络上的通讯,近年来引起广泛关注。为了在有限资源的无线传感器网络能安全进行群组通讯,本文只使用对称加密算法和单向哈希函数提出了一种具有有效性和扩充性的组密钥管理方案,并可满足前向和后向安全性。与目前现有的群组密钥相比,方案不仅具有较好的效率,并且更适合于无线传感器网络。     

无线传感网身份认证协议研究

无线传感器网络由功耗、处理能力、通信能力及存储容量均有限的节点组成,传感器节点易遭受物理攻击及资源的有限的特点,均为节点安全性带来了严重威胁.因此,文章指出针对无线传感网安全问题,除了要有轻量级的密码算法之外,还需要高效的密钥分配和管理机制.为了解决内存有限性和安全性之间的平衡问题,目前已经有许多密钥建立技术,但是,学术领域中对于哪种方案最有效仍有争议.文章对各种常见的身份认证协议进行了比较和分析.     

Wireless sensor network key management survey and taxonomy

Wireless sensor networks (WSN) are mobile ad hoc networks in which sensors have limited resources and communication capabilities. Secure communications in some wireless sensor networks are critical. Key management is the fundamental security mechanism in wireless sensor network. Many key management schemes have been developed in recent years.In this paper, we present wireless sensor network key management survey and taxonomy. We classify proposed wireless sensor network key management schemes into three categories based on the encryption key mechanism. We then divide each category into several subcategories based on key pre-distribution and key establishment.