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arXiv quant-ph/0608030quant-ph
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一次一密辅助双向经典通信的量子密钥分发协议的安全性

Security of quantum key distribution protocol with two-way classical communication assisted by one-time pad encryption

Shun Watanabe, Ryutaroh Matsumoto, Tomohiko Uyematsu

摘要:

本文研究了一种基于一次一密的双向经典通信的量子密钥分发协议。我们提出了一种双向预处理方案,该方案使用预先共享的密钥进行一次性密码本加密,预处理后的量子密钥分配系统的净密钥速率超过了未预处理的量子密钥分配系统的净密钥速率,并将预处理简化为双向经典通信和预先共享EPR对的纠缠蒸馏协议(双向繁殖协议),并以Shor和Preskill的论证同样的方式保证了带预处理的QKD的安全性。

英文摘要:

In this paper, we consider a quantum key distribution protocol (QKD) with two-way classical communication that is assisted by one-time pad encryption. We propose a two-way preprocessing that uses one-time pad encryption by previously shared secret key, and the net key rate of the QKD with proposed preprocessing exceeds the key rate of the QKD without it. The preprocessing is reduced to the entanglement distillation protocol with two-way classical communication and previously shared EPR pairs (two-way breeding protocol), and the security of QKD with the preprocessing is guaranteed in the same way as Shor and Preskill's arguments.

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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