SYSTEM AND METHOD FOR PRESERVING LOCATION DATA PRIVACY IN OUTSOURCE DATABASE

摘要

The present invention relates to a system and method for preserving location data privacy in an outsourcing database. The system includes: a service providing server configured to store and provide encrypted Hilbert aggregation index (HAI) and transformed data index (TDI); a data storing terminal configured to generate and encrypt an HAI and a TDI corresponding to location data using the Hilbert curve, to upload the encrypted HAI and TDI to the service providing server, and to generate and provide a decryption key corresponding to the encrypted HAI and TDI; and a data using terminal configured to access the data storing terminal to obtain the decryption key, to access the service providing server to obtain the encrypted HAI and TDI, and to decrypt the encrypted HAI and TDI using the decryption key to identify location data corresponding to a query region.