Participatory perception system and method with privacy protection based on blockchain

Abstract

The invention discloses a block chain-based participatory perception system with privacy protection and a method thereof. The system includes application servers, tracking servers, users, and blockchain. The application server and the tracking server jointly initialize the entire system, complete user registration, update and revoke the user's reputation value, and when malicious users or false information are detected, the joint tracking server conducts tracking and auditing of the user; Register in the server, send report messages or submit feedback messages anonymously to the application server; the blockchain uses smart contracts to update user reputation levels, and uses smart contracts to track malicious users. The invention overcomes the challenges of user identity privacy and data credibility, and utilizes the transparency and decentralization technology of the block chain to simultaneously realize the functions of transparent management of user reputation and anonymous identity tracking and auditing.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a blockchain-based participatory perception system with privacy protection and a method thereof. Background technique [0002] With the rapid development of mobile communication technology, mobile devices with sensing functions such as smart phones and tablet computers have become an indispensable part of people's daily life. Taking advantage of this mobile environment, participatory perception systems have attracted great attention. Participation in perception, that is, distributed users use mobile devices to collect data from the surrounding environment, and upload the collected data to the application server through mobile communication technologies, such as Wifi, 4G / 5G, etc. The application server aggregates the data uploaded from different users, identifies meaningful information by analyzing the aggregated data, and provides the analysis results to the relevant us...

AI Technical Summary

Problems solved by technology

However, in participatory sensing systems, some protection methods such as anonymity technology can protect users' private information, but it also brings new problems: weakening the credibility of participating system data

However, simultaneously satisfying the two requirements of user privacy and data reliability has not been well addressed in current participatory sensing systems.

On the one hand, privacy protection is usually achieved by eliminating the correlation of a user’s continuous behavior, but data credibility often requires these correlations to be evaluated, and the elimination of correlation further makes it difficult to track individual users; on the other hand, due to Monitoring a user's behavior is usually aimed at a single identity rather than multiple identities, and anonymity in turn affects or increases the difficulty of managing and operating user reputation

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