This paper proposes a new efficient certificateless conditional privacy preserving authentication (CL-CPPA) scheme named ELCPAS, which is pairing-free, energy-efficient, lightweight which uses elliptic curve cryptography (ECC) for internet of vehicles (IoV). The ELCPAS is based on the certificateless signature scheme that eliminates the key escrow problem, which is the drawback of identity-based encryption. It performs batch message verification with a very efficient method which minimizes the delays in the message verification phase. In our proposed scheme, users (vehicle etc.) do not need to communicate with central units during each message signing. Thus, the computational load and connection problems in the central units are minimized. It is also quite fast as it does not use the bilinear pairing and map-to-point operations. The performance evaluation shows that ELCPAS has efficiency in scope of computation cost, communication cost and energy consumption cost compared to other existing schemes. The security evaluation is performed according to the random oracle model (ROM) and the proposed ELCPAS scheme has been shown to be secure. In addition, it provides security requirements and it is resistant to cyber-attacks. The results of the analyses performed according to the security criteria show that it is secure.

本文提出了一种名为 ELCPAS 的新型高效无证书条件隐私保护认证（CL-CPPA）方案，该方案无需配对，节能，轻量级，使用椭圆曲线密码术（ECC）进行车联网（IoV）。ELCPAS 基于消除密钥托管问题的无证书签名方案，这是基于身份的加密的缺点。它使用一种非常有效的方法执行批量消息验证，最大限度地减少了消息验证阶段的延迟。在我们提出的方案中，用户（车辆等）不需要在每次消息签名期间与中央单元通信。因此，中央单元中的计算负荷和连接问题被最小化。它也非常快，因为它不使用双线性配对和映射到点操作。性能评估表明，与其他现有方案相比，ELCPAS 在计算成本、通信成本和能源消耗成本的范围内具有效率。安全评估是根据随机预言模型（ROM）进行的，所提出的 ELCPAS 方案已被证明是安全的。此外，它还提供安全要求并且可以抵抗网络攻击。根据安全标准执行的分析结果表明它是安全的。它提供安全要求并且可以抵抗网络攻击。根据安全标准执行的分析结果表明它是安全的。它提供安全要求并且可以抵抗网络攻击。根据安全标准执行的分析结果表明它是安全的。