论文标题
基于D级猫状态和D级钟状状态的纠缠交换的多方量子私人比较
Multi-party Quantum Private Comparison Based on the Entanglement Swapping of d-level Cat States and d-level Bell states
论文作者
论文摘要
在本文中，基于D级猫态和D级钟形状态的纠缠交换，提出了一种具有半honest第三方（TP）的新型多方量子私人比较（MQPC）协议。在这里，TP被允许自己表现不佳，但不会与任何政党合谋。在我们的协议中，n方采用统一操作来编码其私人秘密，并可以在协议的一次执行中比较其私人秘密的平等。我们的协议可以承受外部攻击和参与者的攻击，条件没有采用QKD方法来生成安全密钥。除了他们的秘密是相同的情况，一个一方无法获得其他当事方的秘密。半honest TP无法学习有关这些当事方秘密的任何信息，除了结束比较结果，结果是否所有n方的私人秘密是平等的。
In this paper, a novel multi-party quantum private comparison (MQPC) protocol with a semi-honest third party (TP) is proposed based on the entanglement swapping of d-level cat states and d-level Bell states. Here, TP is allowed to misbehave on his own but will not conspire with any party. In our protocol, n parties employ unitary operations to encode their private secrets and can compare the equality of their private secrets within one time execution of the protocol. Our protocol can withstand both the outside attacks and the participant attacks on the condition that none of the QKD methods is adopted to generate keys for security. One party cannot obtain other parties' secrets except for the case that their secrets are identical. The semi-honest TP cannot learn any information about these parties' secrets except the end comparison result on whether all private secrets from n parties are equal.
