A Realization Method of Geographically Weighted Average Center Based on Secure Multi-Party Computing

A secure multi-party computing and geographically weighted technology, applied in the field of geographically weighted average center based on secure multi-party computing, can solve the problem of easy data leakage, and achieve the effect of solving the problem of easy data leakage

Active Publication Date: 2021-10-22
JUZIX TECH SHENZHEN CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention provides a method for implementing a geographically weighted average center based on secure multi-party computing, to solve or at least partially solve the technical problem of easy data leakage in the methods in the prior art

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  • A Realization Method of Geographically Weighted Average Center Based on Secure Multi-Party Computing
  • A Realization Method of Geographically Weighted Average Center Based on Secure Multi-Party Computing
  • A Realization Method of Geographically Weighted Average Center Based on Secure Multi-Party Computing

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Embodiment 1

[0043] This embodiment provides a method for realizing the geographically weighted average center based on secure multi-party computing, please refer to figure 1 , the method includes:

[0044] Step S1: Split the calculation part of the method into a local calculation part and a secure multi-party calculation part, wherein the local calculation part specifically includes: the initiator and the receiver respectively preprocess their respective local data.

[0045]Specifically, Secure Multi-Party Computation (Secure Multi-Party Computation, MPC) is an important research direction in the field of cryptography. , or the method of retaining the process data to calculate the data of the other party), collaboratively calculate a functional function, and finally get the correct result fairly. Currently, many computing frameworks have been designed for secure multi-party computing in academia. This solution is based on a general two-party secure computing architecture implemented by G...

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Abstract

The invention discloses a method for realizing a geographically weighted average center based on secure multi-party computing. The implemented algorithm is split, and the part that can be processed locally is used as a preprocessing part, and the part that requires interactive calculation by both parties is used as an MPC calculation part; Design metadata tables and node information tables; implement data preprocessing steps in java programs. The calculation parties (A, B) first process their respective data locally according to their needs, and obtain the weighted sum of the X coordinates and Y coordinates of the local elements, which are respectively Xa, Ya, Xb, and Yb; at the same time, the weighted sum is recorded as Na, Nb; Initiator A initiates MPC calculation and implements the following algorithm X=X a +X b , Y=Y a +Y b , N=N a +N b , both parties share the results and post-process them. During this process, no double-issued data was leaked, which effectively protected the privacy of the data.

Description

technical field [0001] The invention relates to the technical fields of cryptography and spatial information, in particular to a method for realizing a geographic weighted average center based on secure multi-party computing. Background technique [0002] The calculation of the mean center is to calculate the mean center based on the centroid of the input features, and the mean center is a new point. In geographic distribution measurement, you can use the functions provided in the Measuring GeographicDistributions tool set to study the spatial distribution characteristics of features. [0003] In the prior art, in traditional spatial data sharing, each data holder generally sends the data to the sharing platform for processing. [0004] In the process of implementing the present invention, the inventor of the present application found that the method of the prior art has at least the following technical problems: [0005] Through the existing data sharing methods, although...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0428H04L67/10H04L2209/50H04L2209/46H04L67/52
Inventor 朱欣焰安瑞沈硕佘冰谢翔孙立林谢红军
Owner JUZIX TECH SHENZHEN CO LTD
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