区块链环境下用户身份匿名的量子委托计算协议

在大数据背景下，数据安全与身份安全同等重要。其中，身份的盲性值得特别关注。为满足量子委托计算对数据与身份盲性的需求，提出一个在区块链环境下进行，能兼顾数据安全与身份安全的匿名量子委托计算协议。协议不依赖可信的第三方，用户能够匿名地参与委托计算协议，无需展示身份信息就可以完成委托的发送与结果的接收。在发送计算委托时，Alice使用环形网络对身份进行混淆以隐藏发送方。Bob使用受控量子隐形传态安全且匿名地反馈委托计算结果。另外，协议引入区块链技术协助第三方Charlie对用户的支付进行匿名审批。协议使用到的区块链与量子技术基本已实现，因此协议具有较高的可行性。进一步提出了改进协议，用户可以通过比对多委托方的计算结果来实现委托计算结果的可验证。该文提出的协议是一个面向大数据环境的实用协议框架，具有很好的迁移性。

Quantum Delegate Computing Protocol with Anonymous User Identity in Blockchain Scenario

In the big data scenario, data security is as important as identity security. The identity blindness deserves additional attention. In order to meet the needs of quantum entrusted computing in the blockchain scenario, this paper proposes an anonymous quantum entrusted computing protocol which considering both data security and identity security. In our protocol, the user participates in the delegated computing protocol anonymously, and can send the delegation and receive the results without displaying the identity information. The protocol can achieve the above objectives without a trusted third party. When sending the calculation delegation, Alice uses the ring network to confuse the identity to hide the specific sender. Bob uses controlled quantum teleportation to transmit quantum states safely and anonymously in the process of feeding back the entrusted calculation results. The protocol introduces blockchain technology for Charlie, the third party, to anonymous payment and anonymous approval. The blockchain and quantum technology used in the protocol have been basically realized, so the protocol has high feasibility. Furthermore, we propose an improved protocol for users to verify the results of delegated calculations by comparing the results of multiple principals. The protocol proposed is a practical protocol framework for big data environment and has good portability