【摘要】 随着各种交通问题的增加,车载自组织网络的各种应用不断被提出,其安全性也成为研究的焦点。基于无证书公钥系统,提出了高效的安全V2I通信协议,其既避免了基于传统公钥系统的协议需做证书验证和维护的缺陷,又避免了基于身份的公钥密码系统的协议中密钥分发的缺陷。与具有相同安全级别的一个基于证书的安全V2I通信协议相比,本协议的效率提高了一倍,它更适合于车载自组织网络。更多还原

【Abstract】 With the increase of traffic problems,various applications of vehicular Ad hoc networks(VANET)are proposed.And their security is receiving increasing attention.This paper proposed a secure vehicle-to-infrastructure communication protocol based on certificateless public key cryptosystem.The proposed protocol combines the advantages of the protocol based on traditional public key cryptosystem(no key escrow)and that based on ID-PKC(implicit authentication).Compared with a certificate based protocol at the same security level,the efficiency of the proposed approach is improved by1time.So it is more appropriate for VANET.更多还原