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Multi-party blind quantum computation protocol with mutual authentication in network
Science China Information Sciences ( IF 7.3 ) Pub Date : 2021-04-02 , DOI: 10.1007/s11432-020-2977-x
Rui-Ting Shan , Xiubo Chen , Kai-Guo Yuan

Blind quantum computation (BQC) can ensure a client with limited quantum capability safely delegates computing tasks to a remote quantum server. In order to resist attacks from ignoring identity authentication in BQC protocols, it is necessary to guarantee the legality of both clients and servers in a multi-party BQC network. So we propose a multi-party BQC protocol involving three phases to distribute shared keys and authenticate identities. Firstly, by using the advantages of measurement device independent quantum key distribution (MDI-QKD), the registered client and the assigned server could share the initial key safely in registration phase. Secondly, with the help of semi-honest certificate authority (CA), mutual identity authentication phase realizes the two-way authentication from both sides through the shared key simultaneously. Thirdly, in the blind quantum computing phase, a registered client can complete his computing task by just measuring the qubits from the assigned server rather than preparing the qubits. Moreover, combined with first-in-first-out (FIFO) principle, clients’ authentication and blind quantum computing can be processed in parallel. The protocol can also be applied in other multi-party BQC protocols with the universality of resource states. Compared with other BQC protocols, the reliability of the protocol with identity authentication is guaranteed, and the efficiency will be significantly reflected in real experiments.



中文翻译:

网络中具有相互认证的多方盲量子计算协议

盲量子计算(BQC)可以确保量子能力有限的客户端安全地将计算任务委托给远程量子服务器。为了抵抗BQC协议中忽略身份验证的攻击,有必要保证多方BQC网络中客户端和服务器的合法性。因此,我们提出了一个涉及三个阶段的多方BQC协议,以分配共享密钥和验证身份。首先,通过利用与测量设备无关的量子密钥分发(MDI-QKD)的优势,注册客户端和分配的服务器可以在注册阶段安全地共享初始密钥。其次,在半诚实证书颁发机构(CA)的帮助下,相互身份验证阶段可通过共享密钥同时实现双方的双向身份验证。第三,在盲量子计算阶段,注册客户端只需测量分配的服务器中的量子位即可完成其计算任务,而无需准备量子位。此外,结合先进先出(FIFO)原理,可以并行处理客户的身份验证和盲量子计算。具有资源状态通用性的协议也可以应用于其他多方BQC协议。与其他BQC协议相比,具有身份认证的协议的可靠性得到了保证,效率将在实际实验中得到明显体现。客户的身份验证和盲量子计算可以并行处理。具有资源状态通用性的协议也可以应用于其他多方BQC协议。与其他BQC协议相比,具有身份认证的协议的可靠性得到了保证,效率将在实际实验中得到明显体现。客户的身份验证和盲量子计算可以并行处理。由于资源状态的普遍性,该协议还可以应用于其他多方BQC协议。与其他BQC协议相比,具有身份认证的协议的可靠性得到了保证,效率将在实际实验中得到明显体现。

更新日期:2021-04-08
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