ID 原文 译文
3143 其次，分析联邦学习架构，从源数据节点和通信传输优化方面探讨现有研究； Secondly, the federated learning architecture was analyzed from the aspects of source data nodes and transmission optimization.
3144 最后，整理对比面向 隐私保护的非聚合式数据共享框架，为后续研究方案构建和运行提供支撑。 Finally, the existing non-aggregated data sharing frameworks were listed and compared.
3145 此外，总结提出非聚合式数据共享领 域的挑战和潜在的研究方向，如复杂多参与方场景、优化开销平衡、相关安全隐患等。 In addition, the challenges and future potential research directions were summarized, such as complex multi-party scenarios, the balance between optimization and cost, as well as related security risks.
3146 身份认证是车辆接入车联网（IoV）的第一道防线。 Identity authentication is the first line of defense for vehicles to access IoV (Internet of vehicles).
3147 然而现有方案还不能满足 IoV 的高效认证需求，也 不能实现快速的匿名追溯。 However, the existing schemes cannot meet the requirements of efficient authentication of IoV well, nor can they realize fast anonym- ous traceability.
3148 鉴于此，提出了一种 IoV 中双向匿名可追溯组认证协议。 In view of this, a bidirectional anonymous traceability group authentication protocol was proposed in IoV. In this protocol, a number of RSU (road side unit) were grouped quickly and dynamically.
3149 该协议先将多个路侧单元 （RSU）进行快速动态的分组，并对进入 RSU 组的车辆利用切比雪夫混沌映射的单向陷门性和半群特性进行接 入认证， And the vehicles entering the RSU group were authenticated with the one-way trap gating property and semi-group property of Chebyshev chaotic map.
3150 当车辆在组内的 RSU 之间切换时采用反向哈希链进行快速切换认证。 When the vehicle switched between the RSU within a group, the reverse hash chain was used for fast handover authenti- cation.
3151 另外，组内 RSU 可以对恶意车辆 进行身份的匿名追溯，并利用区块链对其身份进行快速撤销，还可以对泄露真实身份的用户进行 ID 的自由变更 。 In addition, the RSU within a group can trace anonymously and revoke the identity of malicious vehicles quickly by using blockchain, and can also freely change the ID of users who reveal their real identity.
3152 同时运用随机预言机模型证明了协议的语义安全性。 At the same time, the se- mantic security of the proposed protocol is proved by using the random predictor model.