带协作式监视节点的安全VANETs路由算法  

Security of VANETs routing algorithm with collaborative monitor node

作　　者：杨善红[1] 唐子蛟[1] 李静雯[1] 

机构地区：[1]四川理工学院计算机学院,四川自贡643000

出　　处：《计算机工程与设计》2015年第2期317-324,共8页Computer Engineering and Design

基　　金：四川省高校重点实验室基金项目(2014WZY03);四川理工学院人才引进基金项目(2011RC08);四川理工学院校级培育基金项目(2012PY10);四川理工学院教改基金项目(JG-1424)

摘　　要：车载网VANETs(vehicular ad hoc networks)的路由协议中总是存在VANETs恶意节点试图破坏消息的正常传递。为此,对车载网无信标路由算法BRAVE(beacon-less routing algorithm for vehicular environments)进行改进,提出一种带协作式监视节点的安全路由算法S-BRAVE。在公钥基础设施PKI(public key infrastructure)的基础上,引用证书交互策略,对消息加载证书并传递过程中进行验证;在路由协议中设置协作式监视节点监视消息的传递,如消息不能传递到目的节点,该节点将担任传递消息的任务,同时调整BRAVE内消息格式使得S-BARVE能防御选择性转发攻击;将S-BRAVE与BRAVE协议在分组投递率、开销和端到端时延等性能方面进行对比。实验结果表明,S-BRAVE的分组投递率提升50%,考虑到开销和时延等方面,S-BARVE适用于大范围节点密集环境。There are malicious nodes intending to jeopardize the delivery of messages in VANETs （vehicular ad hoc networks）. To solve this problem,the BRAVE （beacon-less routing algorithm for vehicular environments）was improved and the S-BRAVE was proposed.First,the PKI （public key infrastructure）and the certificate-change strategy were used to improve the security. Second,nodes were added in the routing protocol to monitor message passing,monitor nodes transferred data in case of some messages fail to arrive in time.Meanwhile,BRAVE message format was adjusted to make S-BARVE defense selective forwarding attacks.At last,S-BRAVE was compared with BRAVE in terms of packet delivery ratio （PDR）,end-to-end delay and overheads.The simulation results show that the PDR is improved by 50%compared with the BRAVE,and it is suitable for the node intensive environment with wide range.

关 键 词：车载网 安全路由算法 监视节点 分组投递率 信号传输 协作式 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]