A Scheme of Secure Location Privacy Sharing in Mobile Crowd Sensing Application Scenario

In this paper, aiming at the problem of secure sharing of location information within a group in a Mobile Crowd Sensing (MCS) application scenario, a scheme of secure sharing of location privacy information among groups based on Ad-Hoc networks is designed by using Blakley secret sharing threshold scheme. Finally, the security, availability and performance of the scheme are analyzed. The scheme can not only resist malicious attacks on less than K group members at the same time, but also carry out hierarchical secure sharing and publishing according to different sharing objects. Group members can also flexibly join and leave. The flexibility and practicability of the scheme are strong, which has strong reference significance for solving the problem of secure sharing and publishing of group locations.