Research On Key Theories Of Quantum Privacy Enhanced Computing For Sensitive Data

With the mature development of quantum computing,quantum privacy-enhancing computing technology can protect and enhance the privacy and security of sensitive data in the process of acquiring,analyzing,and querying sensitive data.As a novel and practical means of protecting sensitive data,quantum privacy-enhanced computing technology has unique advantages in data storage and query protection,and is more meaningful in practical applications than traditional quantum private data query technology.In the construction of data security protection,quantum cryptography,as an important information technology method,can not only ensure the security of private data transmission,but also derive many research branches such as quantum identity authentication,quantum signature,and quantum key distribution.Among them,Quantum Private data query is an important application mode of quantum cryptography.Quantum private data query mainly protects the sensitive data of users and database owners,and ensures the secure query of user data items.In fact,various new attack methods are emerging,mainly including external eavesdropping attacks and malicious joint attacks.Since the traditional QPQ protocol has a lot of drawbacks for the protection of sensitive data of users and database owners,it is imperative to develop a new quantum private data query scheme that can effectively protect sensitive data as soon as possible.In order to solve the shortcomings of the quantum private data query protocol（QPQ）,this paper uses quantum privacy enhancement technology to protect sensitive data,proposes a novel and secure quantum private data query scheme,and demonstrates the security performance of the scheme in detail.The main research results are as follows:1.Aiming at the problem of reducing the quantum capabilities of the participants in the quantum private data query.Using modern cryptography,combined with the theory of blind quantum computing,an effective proxy quantum private data query scheme that uses blind computing to resist malicious joint attacks is proposed.Compared with the existing quantum private data query solution,it achieves effective identity authentication between participants and privacy protection for sensitive data query;effectively avoids external eavesdropping attacks and malicious joint attacks by participants,and reduces the quantum of participants.Improve execution efficiency.2.For the privacy protection of sensitive data in multi-user quantum private data query.Deeply analyzed the existing multi-user quantum private query protocol,and proposed a man-in-the-middle attack model.Based on the theory of partial quantum homomorphic encryption,we further study the quantum private data query under the participation of multiple users,and propose a multi-user efficient quantum private data query scheme against malicious joint attacks of users.This solution realizes the function of parallel query among multiple users,effectively avoids malicious joint attacks among users,and improves security efficiency.Finally,thought and summarized the future development of quantum privacy-enhanced computing technology.In the future,quantum privacy-enhanced computing technology will collide with research theories in various fields,deep integration,continuous updating and common development.