论文标题
基于攻击等级的QKD实验漏洞分析
Experimental vulnerability analysis of QKD based on attack ratings
论文作者
论文摘要
受经典加密硬件的方法的启发，我们考虑在QKD安全评估的背景下使用攻击等级。为了说明这种方法的相关性，我们对两种不同的攻击策略对CV-QKD进行了实验性漏洞评估。第一个策略依赖于通过执行大型相干位移来诱导检测器饱和度。该策略在实验上具有挑战性，因此转化为高攻击等级。我们还提出并在实验上展示了第二种攻击策略，该策略仅在于用外部激光器饱和检测器。我们获得的低评分表明，这种攻击构成了实际CV-QKD系统的主要威胁。这些结果突出了将理论安全注意事项与基于攻击等级的漏洞分析相结合的好处，以指导实用QKD系统的设计和工程，以实现最高的安全标准。
Inspired by the methodology used for classical cryptographic hardware, we consider the use of attack ratings in the context of QKD security evaluation. To illustrate the relevance of this approach, we conduct an experimental vulnerability assessment of CV-QKD against saturation attacks, for two different attack strategies. The first strategy relies on inducing detector saturation by performing a large coherent displacement. This strategy is experimentally challenging and therefore translates into a high attack rating. We also propose and experimentally demonstrate a second attack strategy that simply consists in saturating the detector with an external laser. The low rating we obtain indicates that this attack constitutes a primary threat for practical CV-QKD systems. These results highlight the benefits of combining theoretical security considerations with vulnerability analysis based on attack ratings, in order to guide the design and engineering of practical QKD systems towards the highest possible security standards.
