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提出一个基于d维单粒子态的量子秘密比较协议.在协议中,一个半可信第三方以一一传递的方式发送n个粒子给两个参与者.每个参与者首先都通过对这些粒子执行局域幺正操作来编码n长的随机密钥,然后利用这些密钥加密n长的秘密并公布加密结果.根据这些公开信息,半可信第三方能够在不揭露秘密的情况下帮助他们比较它们的大小关系.同时,本文对协议的安全性也进行详细的讨论,表明该协议在理论上是安全的.另外,该协议的实现只需涉及单粒子态,这在现有的技术条件下是易于实现的.
A quantum secret comparison protocol based on d-dimensional single-particle state is proposed, in which a semi-trusted third party sends n particles to two participants in a one-to-one manner, and each participant first passes these particles Performs local unitary operations to encode n-long random keys, which are then used to encrypt the n-long secrets and publish the results of the encryption, based on which the semi-trusted third parties can help them without revealing the secrets And compare their size relationship.At the same time, the paper also discusses the security of the protocol in detail, which shows that the protocol is theoretically secure.In addition, the implementation of the protocol involves only single-particle state, which is the case in the existing technical conditions Under is easy to achieve.