论文标题
分析大型量子网络中安全密钥交换的多个重叠路径算法
Analysis of Multiple Overlapping Paths algorithms for Secure Key Exchange in Large-Scale Quantum Networks
论文作者
论文摘要
量子网络为前所未有的通信安全级别开辟了道路。但是，由于量子链接距离的物理局限性，量子网络的当前实现不可避免地配备了可信的节点。结果，量子键分布只能在链接上执行。因此，必须考虑一些新的身份验证和关键交换方案，以完全受益于链接的无条件安全。一种这样的方法使用多个非重叠路径（MNOP）进行键换来减轻对信任节点攻击的风险。本文的范围是对无关攻击和与有限资源相关的攻击的情况进行对该方案的安全分析。此外，我们的分析扩展到了多个重叠路径（MOP）的情况。我们证明，与非重叠案例相比，引入重叠路径可以提高协议的安全性，并添加了相同数量的其他链接。该结果可能会在优化大规模（混合）量子网络的体系结构中找到应用。
Quantum networks open the way to an unprecedented level of communication security. However, due to physical limitations on the distances of quantum links, current implementations of quantum networks are unavoidably equipped with trusted nodes. As a consequence, the quantum key distribution can be performed only on the links. Due to this, some new authentication and key exchange schemes must be considered to fully benefit from the unconditional security of links. One such approach uses Multiple Non-Overlapping Paths (MNOPs) for key exchange to mitigate the risk of an attack on a trusted node. The scope of the article is to perform a security analysis of this scheme for the case of both uncorrelated attacks and correlated attacks with finite resources. Furthermore, our analysis is extended to the case of Multiple Overlapping Paths (MOPs). We prove that introducing overlapping paths allows one to increase the security of the protocol, compared to the non-overlapping case with the same number of additional links added. This result may find application in optimising architectures of large-scale (hybrid) quantum networks.
