In the domain of the Internet of Vehicles (IoV), the integration of intelligent devices for traffic data collection is pivotal, with data storage occurring in cloud-assisted IoV systems. Despite its importance, this raises trust concerns regarding cloud servers, necessitating the use of encryption. However, encrypted data search remains a complex challenge. To address this, alongside issues of certificate management, key escrow, and pairing computation, we propose a novel solution: free-pairing certificateless public key encryption with equality test (CL-PKE-ET). This protocol empowers cloud systems to compare encrypted data and establish equality, retrieving results without accessing the sensitive information within the encrypted data. Grounded in the computational Diffie–Hellman assumption within the random oracle model, our CL-PKE-ET protocol is a significant advancement in secure data handling for IoV. Comparative analysis with leading-edge schemes demonstrates our method’s superior performance. This positions our CL-PKE-ET protocol as an ideal fit for the evolving IoV landscape, offering a robust solution to contemporary IoV security challenges.

中文翻译：

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车联网免配对无证书公钥加密与平等测试

在车联网（IoV）领域，交通数据采集的智能设备的集成至关重要，数据存储发生在云辅助的车联网系统中。尽管它很重要，但这引起了人们对云服务器的信任担忧，因此需要使用加密。然而，加密数据搜索仍然是一个复杂的挑战。为了解决这个问题，除了证书管理、密钥托管和配对计算问题之外，我们提出了一种新颖的解决方案：具有相等性测试的自由配对无证书公钥加密（CL-PKE-ET）。该协议使云系统能够比较加密数据并建立平等关系，无需访问加密数据中的敏感信息即可检索结果。我们的 CL-PKE-ET 协议基于随机预言模型中的计算 Diffie-Hellman 假设，是车联网安全数据处理方面的重大进步。与前沿方案的比较分析证明了我们的方法的优越性能。这使得我们的 CL-PKE-ET 协议非常适合不断发展的车联网格局，为当代车联网安全挑战提供强大的解决方案。