安全车载自组网路由协议SCAR
首发时间:2011-04-13
摘要:本文在CAR(Connectivity Aware Routing)协议的基础上,对基于位置的路由协议CAR进行改进,提出了一个新的安全车载自组网路由协议SCAR(Security connectivity Aware Routing),该协议改进了CAR的安全缺陷,为CAR增加了消息认证功能。其中使用了新的签名认证算法hcsrTesla,该算法在TESLA的基础上,加入哈希链自我更新算法。该算法可以为车载网提供源认证,能够抵抗车载网中针对路由的主动攻击。针对SCAR协议,基于NS2的网络仿真实验表明,SCAR协议当存在网络攻击的情况下,可以抵御源攻击,保证路由的正确性,且可达到满意的报文接收率,并且因签名造成的延时在可以接受的范围内。
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VANET secure routing protocol-SCAR
Abstract:Based on the CAR protocol, a new secure routing protocol for vehicular ad-hoc networks-SCAR was presented, it improved the protocol of CAR. SCAR can server the function of security, and increased authentication function. Based on the TESLA algorithm, the paper proposes a new secure signature algorithm-hcsrTesla, the algorithm used a self renewal Tesla hash chain algorithm. This algorithm can provide the source authentication, can resist routing attack. For the SCAR protocol, based on NS2 network simulation experiments show that when routing attack existed, SCAR can resist source attack, guarantee the correctness of routing, achieved satisfactory packet receive ratio, and the delay caused by signature within acceptable limits.
Keywords: VANET hcsrTesla SCAR Authentication
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