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一种含有安全可信任中心的量子秘密共享方案

, PP. 591-598

Keywords: 量子光学,量子秘密共享,安全可信任中心,Bell态,交换操作

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Abstract:

量子秘密共享(Quantumsecretsharing,QSS)可以在不完全信任的通信双方间传递密钥,是量子密码的一个重要分支。本文提出一种含有安全可信任中心的QSS方案。其中,中心能够产生并提供量子态,也能够测量并提取量子态信息。通信用户(Alice、Bob和Charlie)不拥有量子比特产生器和测量器,只需通过幺正操作和交换操作实现密钥传输和窃听防范;同时,Bob和Charlie必须合作才能获得正确的密钥。理论分析表明该方案可有效地抵御截取重发攻击、纠缠测量攻击和关联提取攻击等常见攻击策略;由于方案减少了量子比特产生器和测量器的数量,降低了量子通信的费用。这将为量子秘密共享实用化提供一种可参考的方法。

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