Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A semi-quantum private query method that does not excite classical user measurement capabilities

A query method and technology for measuring capabilities, applied in the field of quantum cryptography

Active Publication Date: 2022-08-05
ZHEJIANG GONGSHANG UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improved QPQ method of Yu et al. [13] is not semi-quantum

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A semi-quantum private query method that does not excite classical user measurement capabilities
  • A semi-quantum private query method that does not excite classical user measurement capabilities

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0071] 1. Application example of SQPQ method

[0072] Herein, an example is used to further illustrate the bit extraction process of the method of the present invention. Suppose a i =0, b i =0. Bob generates a single qubit in the quantum state |+> and sends it to Alice. Alice enters CTRL mode and returns the received quantum state |+> to Bob. Bob measures this qubit using the Z basis, assuming his measurement is |1>. Bob announces a classic bit 1. Based on what she did and Bob's announcement, Alice knows that Bob's measurement must be |1> and the key bit is 0.

[0073] 2. Discussion

[0074] In the method of the present invention, qubits are transmitted back and forth. Therefore, Trojan attacks, including invisible photon eavesdropping attacks [16] and delayed photon Trojan attacks [17-18] should be considered. To overcome invisible photon eavesdropping attacks, Alice inserts a filter in front of her device to filter out photon signals with unreasonable wavelengths be...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention proposes a semi-quantum private query method that does not stimulate the classical user's measurement ability, utilizes the laws of quantum mechanics, and realizes that a user can secretly query a piece of data from a database on the premise that user privacy and database privacy are guaranteed. The method of the present invention has the following characteristics: (1) it adopts only one quantum state as the initial quantum state; (2) it does not require classical users to perform measurement operations; (3) it is deception-sensitive, meaning that if database privacy or User privacy is violated, and attacks can be detected.

Description

technical field [0001] The present invention relates to the field of quantum cryptography. The invention designs a semi-quantum private query method that does not stimulate the classical user's measurement ability, utilizes the laws of quantum mechanics, and realizes that the user can secretly query a piece of data from the database under the premise that user privacy and database privacy are guaranteed. Background technique [0002] Quantum private query (QPQ), as a quantum version of Symmetrically private information retrieval (SPIR) [1], is an important branch of quantum cryptography [2]. It focuses on solving the following problem: using the laws of quantum mechanics, on the premise that user privacy and database privacy are guaranteed, users want to secretly query a piece of data from the database. Here, user privacy means that if a disloyal database owner tries to try his best to know which data of his database the user wants to know, his fraudulent behavior will inev...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08G06F16/245
CPCH04L9/0852G06F16/245
Inventor 叶天语李宏坤胡家莉
Owner ZHEJIANG GONGSHANG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com