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arXiv quant-ph/0506194quant-ph
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提高多方量子秘密共享抗特洛伊木马攻击的安全性

Improving the security of multiparty quantum secret sharing against Trojan horse attack

Fu-Guo Deng, Xi-Han Li, Hong-Yu Zhou, Zhan-jun Zhang

摘要:

分析了Zhang,Li和Man [Phys. Rev. A \textbf{71},044301(2005)]提出的多方量子秘密共享(MQSS)协议的安全性,发现该协议对于除准备量子信号的代理人Bob之外的任何窃听者都是安全的,因为他可以利用特洛伊木马攻击量子通信.也就是说,Bob用多光子信号替换了单光子信号,而另一个代理Charlie无法发现这种欺骗,因为她在光子从老板Alice那里跑回来之前没有测量光子,这表明这种MQSS协议对Bob来说并不安全。最后,我们提出了一个可能的改进MQSS协议的安全性与两个单光子测量和六个酉操作。

英文摘要:

We analyzed the security of the multiparty quantum secret sharing (MQSS) protocol recently proposed by Zhang, Li and Man [Phys. Rev. A \textbf{71}, 044301 (2005)] and found that this protocol is secure for any other eavesdropper except for the agent Bob who prepares the quantum signals as he can attack the quantum communication with a Trojan horse. That is, Bob replaces the single-photon signal with a multi-photon one and the other agent Charlie cannot find this cheating as she does not measure the photons before they runs back from the boss Alice, which reveals that this MQSS protocol is not secure for Bob. Finally, we present a possible improvement of the MQSS protocol security with two single-photon measurements and six unitary operations.

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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