分布式CA在移动自组网中的应用

Distributed CA for Mobile Ad hoc Networks

提出了一个基于门限和椭圆曲线算法的SFDCA(Security Framework of D istributed CA)安全框架结构。SFDCA中采用了分布式CA的安全机制、门限密钥管理、椭圆曲线算法、基于设备资源的选举算法和动态网络分簇思想。分布式CA和门限密钥管理的应用增加了系统的安全性和容错性;椭圆曲线算法的应用减少了对移动节点性能的要求;分簇算法的应用减少了对节点容量的要求;基于资源的选举算法的应用提高了系统的签名效率,同时有利于设备资源利用的负载平衡。

In this paper, we proposed a Security Framework of Distributed CA for Manet （Mobile Ad hoc Networks）. The key elements of the framework are ： distributed CA based on threshold cryptosystem which can provide a highly secure and highly available. The application of Elliptic Curve Cryptography （ECC） which is appropriate for mobile nodes with limited computational power. A scheme for dynamically partitioning the network into smaller clusters of nodes based on nodal mobility which can reduce the storage of node. A scheme for election based on the resource which can improve the efficiency of distributed signature and be favor of the system load balance of the usage of device resorce.