论文标题
天空中的钥匙：首次使用卫星链接对物理层安全性进行探索
Keys from the Sky: A First Exploration of Physical-Layer Security Using Satellite Links
论文作者
论文摘要
在本文中，我们研究了基于接近的集体钥匙机构和位置证明的物理层安全性（PLS）方法。应用领域包括安全的汽车通信，保险和安全的距离证据，用于医疗保健或基于位置的功能激活。由于沟通限制，例如基于超宽频段（UWB）的飞行测量时间或可信赖的硬件，例如使用全球导航卫星系统（GNSS）定位数据，因此现有技术不能令人满意地解决问题。 我们将PLS作为解决方案候选人。它在理论上是安全的，这也意味着量子后耐药性，并且有可能在延迟较低的资源约束设备上运行。此外，我们使用卫星至地球链接的无线通道属性，展示了使用现成的硬件测试床的首次可行性研究，并提供了第一个评估结果以及研究的未来方向。
In this paper, we investigate physical-layer security (PLS) methods for proximity-based group-key establishment and proof of location. Fields of application include secure car-to-car communication, privacy-preserving and secure distance evidence for healthcare or location-based feature activation. Existing technologies do not solve the problem satisfactorily, due to communication restrictions, e.g., ultra-wide band (UWB) based time of flight measurements, or trusted hardware, e.g., using global navigation satellite system (GNSS) positioning data. We introduce PLS as a solution candidate. It is information theoretically secure, which also means post-quantum resistant, and has the potential to run on resource constrained devices with low latency. Furthermore, we use wireless channel properties of satellite-to-Earth links, demonstrate the first feasibility study using off-the-shelf hardware testbeds and present first evaluation results and future directions for research.
