arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.14337quant-ph
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使用部分恶意设备的安全量子密钥分发

Secure quantum key distribution with a subset of malicious devices

Víctor Zapatero, Marcos Curty

AI总结:

针对QKD硬件可能被恶意操纵的安全威胁,提出使用冗余设备的分布式QKD后处理协议,在多种腐败模型下证明其安全性,并在自然假设下显著提升密钥速率、简化设置,有限尺寸密钥速率接近标准可信设备场景。

摘要:

量子密钥分发(QKD)硬件的恶意操纵对其安全性构成严重威胁,因为在实际中,终端用户和QKD制造商通常都无法验证其QKD系统每个组件的完整性。重新建立QKD安全性的一种可能方法是使用冗余数量的设备。遵循这一思路,我们提出了一种高效的分布式QKD后处理协议,并在多种可能恶意设备的腐败模型下证明了其安全性。我们发现,与最保守的主动且协作的腐败设备模型相比,自然的假设能够显著提高秘密密钥速率,并大大简化QKD设置。此外,我们表明,在大多数实际情况下,所得的有限尺寸秘密密钥速率与假设可信设备的标准场景中的速率相似。

英文摘要:

The malicious manipulation of quantum key distribution (QKD) hardware is a serious threat to its security, as, typically, neither end users nor QKD manufacturers can validate the integrity of every component of their QKD system in practice. One possible approach to re-establish the security of QKD is to use a redundant number of devices. Following this idea, we introduce an efficient distributed QKD post-processing protocol and prove its security in a variety of corruption models of the possibly malicious devices. We find that, compared to the most conservative model of active and collaborative corrupted devices, natural assumptions lead to a significant enhancement of the secret key rate and considerably simpler QKD setups. Furthermore, we show that, for most practical situations, the resulting finite-size secret key rate is similar to that of the standard scenario assuming trusted devices.

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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