A Security-Enhanced Query Result Verification Scheme for Outsourced Data in Location-Based Services

Location-based services (LBSs) facilitate people’s lives; location-based service providers (LBSPs) usually outsource to third parties provide better services. However, the party is a dishonest entity that might return incorrect or incomplete query results under consideration of saving storage space and computation resources. In this paper, we propose security-enhanced result verification scheme (SEQRVS) for outsourced data in LBS. Specifically, while retaining fine-grained verification, improve construction process objects enhance security data. To prevent from deducing knowledge stored itself (statistically), our designs novel structure ability privacy preservation Furthermore, based on secure keyword search mode proposed scheme, user cannot only verify correctness completeness but also achieve consistency by blockchain. Finally, analysis extensive simulation show practicality scheme.