论文标题
基于钟形状态的私人比较，没有经典用户的量子测量
Semiquantum private comparison based on Bell states without quantum measurements from the classical user
论文作者
论文摘要
在本文中，我们提出了一种基于钟状态的新型Semiquantum私人比较（SQPC）协议，该协议使一个量子用户和一个经典用户可以借助半honest量子第三方（TP）比较其私人输入的平等。从某种意义上说，她可能会采取所有可能的攻击来窃取用户的私人意见，而只是串谋与任何人同谋，TP被认为是半honest。安全分析验证了我们的协议不仅可以抵抗内部参与者的攻击，还可以抵抗外部窃听器的攻击。此外，我们的协议仅要求TP执行铃铛基量测量，但不需要量子纠缠交换；它可以释放经典用户进行量子测量和具有量子内存。此外，我们的协议可以比以前的SQPC协议利用基于固定效率的Bell状态。最后，我们的协议可以推广到其集体淘汰噪声量子通道的对应物中。
In this paper, we propose a novel semiquantum private comparison (SQPC) protocol based on Bell states, which enables one quantum user and one classical user to compare the equality of their private inputs with the help of a semi-honest quantum third party (TP). TP is assumed to be semi-honest in the sense that she may take all possible attacks to steal users' private inputs except conspiring with anyone. The security analysis validates that our protocol can resist not only the attacks from internal participants but also the attacks from an external eavesdropper. Besides, our protocol only asks TP to perform Bell basis measurements but doesn't need quantum entanglement swapping; and it releases the classical user from conducting quantum measurements and having a quantum memory. Moreover, our protocol can take advantage over previous SQPC protocols based on Bell states in qubit efficiency. Finally, our protocol can be generalized into its counterpart of the collective-dephasing noise quantum channel.
