In vehicular network communications, the privacy and authentication requirements are necessary to design efficient solutions that not only ensure the authentication of the traffic-related messages, but also prevent attackers from affecting the driver's privacy, and in the meanwhile reduce the computation and communication costs. In this paper, we investigate ring signature and aggregate concepts in the certificate-less context to avoid the costs and enhance the benefits of both approaches. We propose a new framework Certificateless Aggregate scheme based on Traceable Ring Signature (CLA-TRS) that ensures conditional privacy preservation authentication in VANET communication, while significantly reducing the computational overhead for the signature verification.

在车载网络通信中，隐私和身份验证要求设计有效的解决方案是必要的，不仅可以确保交通相关消息的身份验证，还可以防止攻击者影响驾驶员的隐私，同时降低计算和通信成本。在本文中，我们研究了无证书上下文中的环签名和聚合概念，以避免成本并增强两种方法的收益。我们提出了一种基于可追踪环签名（CLA-TRS）的新框架无证书聚合方案，该方案可确保 VANET 通信中的条件隐私保护认证，同时显着降低签名验证的计算开销。