一种新型基于密钥循环的半量子多方认证盲量子计算方案

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Abstract：In order to fulfill the requirements of the client with limited quantum capacity for a large number of quantum computing， blind quantum computing （BQC） emerged as the times require， which can realize the remote interaction between the client and the quantum computer and ensure the security of information transmission. In this paper， we propose a new multi-party authentication blind quantum computation， which can recycle the used pre-shared keys. And then we use the quantum key recycling function of BQC to improve the utilization efficiency of quantum resources. In our BQC protocol， there are four kinds of participants： client， server， Load_Balancer and semi-honest certificate authority （CA）， which consists of two stages： key distribution and blind quantum computing. In the first stage， the Load_Balancer completes identity authentication and secret key distribution with the help of the certificate authority， and recycles the secret keys that can be used again for next new instance of the protocol. In the second stage， blind quantum computing enables the client to complete the computing task only by measuring the quantum bits from the server without preparing the quantum bits. The client can use the server to measure the quantum to complete the computation. Compared with the traditional BQC protocol， our proposed quantum key recycling protocol can greatly improve the efficiency of key distribution and reuse， we prove it in the efficiency analysis part of the paper.

Key words：blind quantum computation; key recycling; key distribution

CLC number：TP319Document code：A

doi：10.3969/j.issn.16735862.2023.04.003

摘要：为了满足量子容量有限的客户端对大量量子计算的需求，盲量子计算应运而生，它可以实现客户端与量子计算机之间的远程交互，从而确保信息传输的安全。（剩余34623字）