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arXiv 1609.08487quant-ph
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完全通用的设备无关性,用于双方加密和位置验证

Fully general device-independence for two-party cryptography and position verification

Jérémy Ribeiro, Gláucia Murta, Stephanie Wehner

摘要:

设备无关的量子加密允许安全性,即使用于执行协议的设备是不可信的-无论这是由于实现中的未知缺陷,还是因为对手自己构建它们来破坏协议的安全性。虽然设备无关性在量子密钥分发领域受到了广泛关注,但对于一般协议却知之甚少。在这里,我们介绍了一个新的模型,设备独立的两方协议和位置验证的噪声存储模型。这是第一次,我们证明了这样的协议是安全的,在最一般的设备无关的模型中,设备可以有任意的内存,状态和测量。在我们的分析中,我们对[arXiv:1607.01796]中开发的一个漂亮的新工具进行了轻微的修改,称为“熵累积定理”。更重要的是,我们分析的协议只使用简单的准备和测量,并且可以使用任何能够执行CHSH Bell测试的实验装置来实现。具体地说,对于任何违反CHSH不等式的情况都可以实现安全性,其中更高的违反仅导致执行协议所需的轮数减少。

英文摘要:

Device-independent quantum cryptography allows security even if the devices used to execute the protocol are untrusted - whether this is due to unknown imperfections in the implementation, or because the adversary himself constructed them to subvert the security of the protocol. While device-independence has seen much attention in the domain of quantum key distribution, relatively little is known for general protocols. Here we introduce a new model for device-independence for two-party protocols and position verification in the noisy-storage model. For the first time, we show that such protocols are secure in the most general device-independent model in which the devices may have arbitrary memory, states and measurements. In our analysis, we make use of a slight modification of a beautiful new tool developed in [arXiv:1607.01796] called "Entropy Accumulation Theorem". What's more, the protocols we analyze use only simple preparations and measurements, and can be realized using any experimental setup able to perform a CHSH Bell test. Specifically, security can be attained for any violation of the CHSH inequality, where a higher violation merely leads to a reduction in the amount of rounds required to execute the protocol.

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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