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 inn...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 pre-distribution, polynomial-based, Blom's matrix-based, and deterministic key pre-distribution 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.展开更多
The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key managemen...The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key management scheme is responsible for secure distributing group keys among valid nodes of the group. Based on the key-insulated encryption (KIE), we propose a group key management scheme (KIE-GKMS), which integrates the pair-wise key pre-distribution for WSN. The KIE-GKMS scheme updates group keys dynamically when adding or removing nodes. Moreover, the security analysis proves that the KIE-GKMS scheme not only obtains the semantic security, but also provides the forward and backward security. Finally, the theoretical analysis shows that the KIE-GKMS scheme has constant performance on both communication and storage costs in sensor nodes.展开更多
组密钥在传感器网络安全组通信及虚假数据过滤等安全服务中起着重要作用.针对节点可能被大量俘获这一安全威胁研究组密钥管理问题,提出了一种基于随机混淆技术的组密钥管理机制GKRP(group key management scheme based on random pertur...组密钥在传感器网络安全组通信及虚假数据过滤等安全服务中起着重要作用.针对节点可能被大量俘获这一安全威胁研究组密钥管理问题,提出了一种基于随机混淆技术的组密钥管理机制GKRP(group key management scheme based on random perturbation).首先,提出了一种基站与网络协同的组密钥管理框架;然后,结合秘密共享技术和随机混淆技术构造了组密钥广播函数和局部协作等功能函数,以实现组密钥更新信息的广播传输和多个被俘获节点的撤销;最后,基于上述管理框架和函数,提出了机制GKRP,使得节点间可以协作进行组密钥更新.理论分析及仿真结果表明,GKRP在特定的参数设置下不受限于被俘获节点,且该参数易于满足.因此,GKRP有效突破了门限值问题,提高了网络的抗毁性.同时,由于采取局部广播和全网络广播方式更新组密钥,GKRP在通信上同样更为有效.GKRP的存储和计算开销略高于已有同类机制,但仍然较低,适合于传感器网络.展开更多
文摘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 pre-distribution, polynomial-based, Blom's matrix-based, and deterministic key pre-distribution 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.
基金Project(61100201) supported by National Natural Science Foundation of ChinaProject(12ZZ019) supported by Technology Innovation Research Program,Shang Municipal Education Commission,China+1 种基金Project(LYM11053) supported by the Foundation for Distinguished Young Talents in Higher Education of Guangdong Province,ChinaProject(NCET-12-0358) supported by New Century Excellent Talentsin University,Ministry of Education,China
文摘The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key management scheme is responsible for secure distributing group keys among valid nodes of the group. Based on the key-insulated encryption (KIE), we propose a group key management scheme (KIE-GKMS), which integrates the pair-wise key pre-distribution for WSN. The KIE-GKMS scheme updates group keys dynamically when adding or removing nodes. Moreover, the security analysis proves that the KIE-GKMS scheme not only obtains the semantic security, but also provides the forward and backward security. Finally, the theoretical analysis shows that the KIE-GKMS scheme has constant performance on both communication and storage costs in sensor nodes.
文摘组密钥在传感器网络安全组通信及虚假数据过滤等安全服务中起着重要作用.针对节点可能被大量俘获这一安全威胁研究组密钥管理问题,提出了一种基于随机混淆技术的组密钥管理机制GKRP(group key management scheme based on random perturbation).首先,提出了一种基站与网络协同的组密钥管理框架;然后,结合秘密共享技术和随机混淆技术构造了组密钥广播函数和局部协作等功能函数,以实现组密钥更新信息的广播传输和多个被俘获节点的撤销;最后,基于上述管理框架和函数,提出了机制GKRP,使得节点间可以协作进行组密钥更新.理论分析及仿真结果表明,GKRP在特定的参数设置下不受限于被俘获节点,且该参数易于满足.因此,GKRP有效突破了门限值问题,提高了网络的抗毁性.同时,由于采取局部广播和全网络广播方式更新组密钥,GKRP在通信上同样更为有效.GKRP的存储和计算开销略高于已有同类机制,但仍然较低,适合于传感器网络.
