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arXiv 2512.04429quant-phcs.CR
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有限密钥下的量子与后量子安全性能结合

Combined Quantum and Post-Quantum Security Performance Under Finite Keys

University of New South Wales(新南威尔士大学)

Aman Gupta, Ravi Singh Adhikari, Anju Rani, Xiaoyu Ai, Robert Malaney

AI总结:

本研究提出了一种结合量子与后量子安全性的混合系统,通过整合紧致的有限密钥安全性提升QKD安全性,并改进原始构件设计以实现线性可扩展性。

摘要:

近期量子安全通信的进展突显了将量子密钥分发(QKD)与后量子密码学(PQC)结合的混合方案的价值。然而,大多数现有的混合设计忽略了QKD密钥率上的现实有限密钥效应,并未说明如何在QKD和PQC原始构件通过侧通道泄露信息时维持安全。这些缺口限制了混合系统在实际部署网络中的应用。在本工作中,我们推进了一个最近提出的混合QKD-PQC系统,通过将紧致的有限密钥安全性整合到QKD原始构件中,并改进设计以实现更好的可扩展性。该混合系统采用一种信息论上安全的指令序列,确定不同原始构件的配置,从而确保即使QKD和PQC原始构件都被攻破时也能保证信息保密性。我们工作的创新点在于对BBM92协议实现了迄今为止最紧致的有限密钥安全性,并改进了混合系统的原始构件设计,以确保处理时间与秘密指令大小成线性关系。

英文摘要:

Recent advances in quantum-secure communication have highlighted the value of hybrid schemes that combine Quantum Key Distribution (QKD) with Post-Quantum Cryptography (PQC). Yet most existing hybrid designs omit realistic finite-key effects on QKD key rates and do not specify how to maintain security when both QKD and PQC primitives leak information through side-channels. These gaps limit the applicability of hybrid systems in practical, deployed networks. In this work, we advance a recently proposed hybrid QKD-PQC system by integrating tight finite-key security to the QKD primitive and improving the design for better scalability. This hybrid system employs an information-theoretically secure instruction sequence that determines the configurations of different primitives and thus ensures message confidentiality even when both the QKD and the PQC primitives are compromised. The novelty in our work lies in the implementation of the tightest finite-key security to date for the BBM92 protocol and the design improvements in the primitives of the hybrid system that ensure the processing time scales linearly with the size of secret instructions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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