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Attribute-based authorization tickets for Car-to-X communication

机译：Car-to-X通信的基于属性的授权票证

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In this paper we propose an approach that allows an Intelligent Transportation System (ITS) Vehicle Station (IVS) to anonymously authenticate itself at applications with attribute-based access restrictions. For authentication purposes we apply attribute-based authorization tickets, which are granted after the IVS proved that it fulfills all access restrictions. For the proof of attributes we rely on Anonymous Credentials (ACs), which are sets of verified attributes. When proving attributes, only the ones necessary for the application are revealed, all others are kept private. The resulting system supports billing of application usage and revocation of an IVS, tickets, ACs, and single attributes, while protecting the privacy of the IVS. We propose two different versions of the system and present a prototype implementation. We furthermore compare their properties and evaluate the performance. We demonstrate that the additional time delay introduced by the proof of the attributes does not significantly influence the usability of the system.
机译：在本文中，我们提出了一种方法，该方法允许智能运输系统（ITS）车辆站（IVS）在具有基于属性的访问限制的应用程序中进行匿名身份验证。为了进行身份验证，我们应用了基于属性的授权票证，该票证是在IVS证明其满足所有访问限制后才授予的。为了证明属性，我们依赖于匿名凭证（AC），这是一组经过验证的属性。在证明属性时，仅显示应用程序所需的属性，而所有其他属性则保持私有状态。最终的系统支持对应用程序使用进行计费，并撤销IVS，票证，AC和单个属性，同时保护IVS的隐私。我们提出系统的两个不同版本，并提出一个原型实现。我们还比较了它们的属性并评估了性能。我们证明了由属性证明引入的额外时间延迟不会显着影响系统的可用性。

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