【摘要】 针对当前车联网匿名认证方案安全性和效率的问题,利用椭圆曲线密码体制密钥短、速度快和安全性能高等优越性,提出一个安全高效的车联网批量匿名认证方案.通过路侧单元(RSU)与车辆共同生成签名,从而进一步减轻可信中心的负担.通过分析表明:该方案不仅能解决隐私保护、不可链接性、抗中间人攻击、抗合谋攻击、前向和后向安全、抗重放攻击等多种安全问题,而且在计算复杂度和通信复杂度方面也存在明显优势,具有更高的认证效率.因此,该方案在计算性能受限的物联网环境中,具有重要的理论意义与应用价值.更多还原

【Abstract】 Aiming at the security and efficiency problem of anonymous authentication in the existing schemes for vehicular ad hoc network,a secure and efficient batch anonymous authentication scheme is presented. It is based on elliptic curve cryptography which has the advantages of short key length,fast speed and high security. The signature is jointly generated by the roadside unit node( RSU)and the vehicle. The computational load of trust authority is further reduced. Analysis shows that the scheme can not only defense some security problems such as privacy protection,man-in-the-middle attack,no linkability,collusion attack,forward and backward security,replay attacks,etc,but also there is obvious advantage in time complexity and communication complexity. So the authentication efficiency is also improved further. Therefore,this scheme has important theoretical significance and application value in the environment of internet of things with limited performance.更多还原