基于身份的Ad Hoc网络群签名算法设计  

An Identity-based Group Signature Scheme in Ad Hoc Networks

作　　者：高萍[1] 李伟华[1] 

机构地区：[1]西北工业大学计算机学院,陕西西安710072

出　　处：《计算机仿真》2008年第7期98-101,165,共5页Computer Simulation

基　　金：西北工业大学研究生创业种子基金(Z200650);国家部委基金(9140A17050206HK03)

摘　　要：现有Ad Hoc网络存在公钥基础设施缺乏、网络拓扑结构变化以及节点资源受限等缺陷,故传统的基于可信机构的密码机制不再适用。为了解决Ad Hoc网络中的密钥管理及认证签名问题,利用基于身份密码体制的优点,结合基于联合秘密共享的门限群签名体制,设计了应用于Ad Hoc网络的基于身份的群签名算法。算法分析及网络仿真实验表明,提出的算法有效地节省了网络数据的传输量和节点签名的计算量,解决了现有Ad Hoc网络认证方案不能处理节点私钥更新和抵抗合谋攻击等问题。在保证安全性和有效性的同时控制了计算量,因此适用于Ad Hoc网络。In Ad Hoc Networks,owing to many new characteristics such as inexistent Public Key Infrastructure,mutative topology and limitative resource,the security situation is different from traditional networks.In order to implement secure and efficient authentication in Ad Hoc networks,an identity-based group signature scheme which combines identity-based cryptograph and threshold signature based on joint secret sharing technique is proposed in this paper.The scheme analysis and the simulation statistics demonstrate that the scheme can not only save network bandwidth and computational power of mobile nodes,but also solve the problems such as the threshold group signature schemes cannot dispose the keys updating of nodes or withstand conspiracy attacks.The proposed scheme is applicable to Ad Hoc networks since it ensures the security and validity,and can control the calculation amount.

关 键 词：自组网络 基于身份的密码机制 门限群签名 合谋攻击 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]