Group privacy information discovery method and system

A technology of private information and discovery methods, applied in the field of group private information discovery methods and systems, can solve problems such as reducing user experience, achieve the effects of reducing computing and communication overhead, reducing computing and communication costs, and improving computing efficiency

Active Publication Date: 2019-12-13
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. Most service providers will combine certain types of user needs into one type of demand, which can effectively increase service coverage while reducing service types. However, this contradicts the actual needs of users to quickly obtain services and reduces user experience.

Method used

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  • Group privacy information discovery method and system
  • Group privacy information discovery method and system
  • Group privacy information discovery method and system

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Experimental program
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Embodiment Construction

[0057] The method for discovering group private information provided by the present invention is applicable to any mobile terminal user oriented to group services, and the method mainly includes the following four steps:

[0058] The first step is to initialize the private information: in the case of given security parameters, the public key-private key pair of the system is generated by running the algorithm, and the system private key is randomly decomposed into two parts, one part is used as the private key of the relay server, The other part is used as the private key of the server, and the ciphertext encrypted by the system public key can only be decrypted after using both parts of the private key for decryption calculation.

[0059] In the second step, the relay server assists the service provider in performing DP clustering calculation: Since each relay server only performs clustering calculation on user data information whose starting point is within the service area, t...

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Abstract

The invention provides a group privacy information discovery method and system, which protect privacy information based on a relay server, perform DP clustering on information uploaded by a user through the relay server on the premise of not sacrificing clustering quality, and protect sensitive information uploaded by the user at the same time. The clustering operation is transferred from the mobile device of the user to the relay server, the user is allowed to be offline after submitting the demand, iterative calculation is avoided, and the calculation efficiency is improved. According to theclustering result, the result is further optimized on the premise of meeting the user requirements, and the service coverage range is expanded. According to the invention, the calculation and communication cost of the user mobile device can be greatly reduced, and meanwhile, the group service provider is helped to save overhead and increase the coverage area.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a method and system for discovering group private information. Background technique [0002] In recent years, with the rapid popularization of information services and the rapid development of mobile communication technology, the mobile Internet has promoted the development of many new network service models with its portability and real-time performance, among which group services have penetrated into people's daily life. . Such services provide services to a group of people with similar needs by analyzing the needs submitted by users. Service providers need to collect some personal information or needs of users in order to find suitable sharing objects for users and provide services in groups. However, because the service provider is not completely trustworthy, there is a huge risk of privacy leakage in this form of group service. Based on the collected user...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/62G06K9/62
CPCG06F21/602G06F21/6245G06F18/23213
Inventor 李凤华牛犇何媛媛尹沛捷
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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