西北师范大学学报（自然科学版）2026，Vol.62Issue(1)：23-34,58,13.DOI:10.16783/j.cnki.nwnuz.2026.01.003
基于多客户端功能加密的移动群智感知系统去中心化隐私保护真相发现
Decentralized privacy-preserving truth discovery for mobile crowd-sensing systems under multi-client functional encryption
摘要
Abstract
In recent years,mobile crowd-sensing systems have attracted a great deal of attention.Unfortunately,it is challenging to obtain accurate and truthful values due to the inaccuracy of the data collected from individual users.Truth discovery,a method for identifying the true value among data from a large number of users,has gained popularity.However,existing truth discovery algorithms often exhibit drawbacks,such as the lack of protection for users'privacy data and the need for two or more platforms to complete the process.In addition,the efficiency of these algorithms remains a concern.To address these issues,we propose a new framework called Truth Discovery for Crowd-Sensing Systems Under Distributed Functional Encryption.Our proposal not only employs a single platform but also achieves good efficiency and privacy protection through elliptic-curve cryptography and inner product operations.To demonstrate these advantages,we compare our framework with the Cloud-Enabled Privacy-Preserving Truth Discovery framework.The experimental results show that the efficiency of our framework is better than the cloud-enabled PPTD,it can increase the server time cost by about 1000%and the worker time cost by 100%.关键词
真值发现/隐私保护/移动群智感知系统/多客户端功能加密/单一平台Key words
truth discovery/privacy preserving/mobile crowd-sensing system/multi-client functional encryption/single platform分类
数理科学引用本文复制引用
胡为昕,汪小芬..基于多客户端功能加密的移动群智感知系统去中心化隐私保护真相发现[J].西北师范大学学报（自然科学版）,2026,62(1):23-34,58,13.基金项目
国家自然科学基金资助项目(62372092) （62372092）
四川省自然科学基金面上项目(2025ZNSFSC0512) （2025ZNSFSC0512）
