Vehicular Ad-hoc Networks (VANETs) marked a pronounced change in the Intelligent Transport System and Smart Cities through seamless vehicle communication to intensify safety and efficacy. However, a few authentication schemes have been devised in the literature to ensure the authenticity of the source and information in the post-quantum era. The most popular base for such construction is lattice-based cryptography. However, existing lattice-based authentication schemes fall short of addressing the potential challenges of the leakage of the master secret key and key-escrow problem. By ingeniously addressing both issues, the paper proposes the \emph{first} quantum secure authentication scheme to eliminate the flaws while maintaining the system's overall efficiency intact. Compared to the state-of-the-art schemes, the provable security and overall performance assessment highlight the suitability of the proposed approach.

翻译：车载自组网（VANET）通过无缝的车载通信显著提升了交通安全与效率，标志着智能交通系统与智慧城市的重大变革。然而，现有文献中仅有少量认证方案能够确保后量子时代信息来源与内容的真实性。此类方案大多基于格密码学构建，但现有格基认证方案未能有效解决主密钥泄露和密钥托管问题。本文创新性地同时攻克上述两大难题，提出了首个量子安全认证方案，在消除安全缺陷的同时保持系统整体效率。与现有最先进方案相比，可证明安全性与综合性能评估验证了所提方法的适用性。