The explosive growth of the Internet of Things and modern networking technologies lay the foundation for the development of intelligent transportation systems and smart cities. To analyzing massive data under the required time for transportation issues, the edge computing paradigm is applied, which pre-processing large amounts of data at the network edge to save bandwidth and improve response time. However, data reliability and security are still facing many challenges in the edge environment. In this article, we propose a multi-authority hybrid attribute-based signature scheme (SDABS). It is composed of four phases: system initialization, signature generation, signature verification, and attribute revocation phases. To better describe frequently changing features in the transportation systems like location, the dynamic attribute is introduced in building the signature. The multi-layer policy tree is applied to support flexible and various access policies, which also naturally form user groups and help data searching. Besides, the multi-authority structure is more suitable for the distributed edge environment. We evaluate SDABS from both theoretical analysis and practical analysis. Compared with two classical signature schemes (MABS and ODMA-ABS), experimental results demonstrate that the proposed SDABS can achieve better performance at an acceptable cost in the terms of attributes and attribute authorities.

中文翻译：

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SDABS：边缘环境中灵活高效的基于多权限混合属性的签名方案

物联网和现代网络技术的爆炸性增长为智能交通系统和智能城市的发展奠定了基础。为了在运输问题所需的时间下分析海量数据，应用了边缘计算范式，该范式可以在网络边缘处预处理大量数据，以节省带宽并缩短响应时间。但是，在边缘环境中，数据的可靠性和安全性仍然面临许多挑战。在本文中，我们提出了一种基于多权限混合属性的签名方案（SDABS）。它由四个阶段组成：系统初始化，签名生成，签名验证和属性吊销阶段。为了更好地描述运输系统中经常变化的功能（例如位置），动态属性是在构建签名时引入的。多层策略树用于支持灵活的各种访问策略，这些访问策略自然也可以形成用户组并帮助数据搜索。此外，多权限结构更适合于分布式边缘环境。我们从理论分析和实践分析两个方面评估SDABS。与两种经典签名方案（MABS和ODMA-ABS）相比，实验结果表明，在属性和属性权限方面，所提出的SDABS可以以可接受的成本实现更好的性能。多权限结构更适合于分布式边缘环境。我们从理论分析和实践分析两个方面评估SDABS。与两种经典签名方案（MABS和ODMA-ABS）相比，实验结果表明，在属性和属性权限方面，所提出的SDABS可以以可接受的成本实现更好的性能。多权限结构更适合于分布式边缘环境。我们从理论分析和实践分析两个方面评估SDABS。与两种经典签名方案（MABS和ODMA-ABS）相比，实验结果表明，在属性和属性权限方面，所提出的SDABS可以以可接受的成本实现更好的性能。