One of the most important challenges in secure and efficient communications for Vehicular Ad hoc NETworks (VANET) is proposing an appropriate authentication scheme. On the other hand, commonly used authentication approaches cannot be directly applied since they would lead to the violation of the privacy of the involved vehicles. In this paper, to address the security and privacy issues in VANETs, we propose an efficient certificateless ring signature (BV-CLRS) with batch verification that ensures conditional privacy preservation authentication for VANET communication. Significantly, the BV-CLRS reduces the computational and communication overhead. Moreover, our security analysis shows that the proposed scheme is more efficient than the existing schemes in case of the signature generation and verification process.

车载Ad hoc NETworks（VANET）进行安全有效的通信时，最重要的挑战之一就是提出适当的身份验证方案。另一方面，常用的认证方法不能直接应用，因为它们会导致所涉车辆的隐私受到侵犯。在本文中，为了解决VANET中的安全性和隐私问题，我们提出了一种具有批处理验证的有效无证书环签名（BV-CLRS），以确保对VANET通信进行有条件的隐私保存身份验证。显然，BV-CLRS减少了计算和通信开销。此外，我们的安全性分析表明，在签名生成和验证过程中，该方案比现有方案更有效。