SEARCHABLE ENCRYPTION METHOD SUPPORTING LOCATION PROTECTION AND QUERY PRIVACY

摘要

Provided is a searchable encryption method supporting location protection and query privacy, comprising: a service provider pre-processing information of each point of interest; each point of interest comprising a point of interest identifier, a point of interest location, and point of interest service content; the service provider uploading the pre-processed data to a cloud server and sharing a key with a user; the user submitting a location-based search service content request to the cloud server; the cloud server receiving the search service content request sent by the user and searching according to the location; the cloud server generating a verification object and sending the searched service content and verification object to the user; the user receiving the service content and verification object searched by the cloud server; the user verifying the received service content and verification object and decrypting to obtain the search result. In the method, it is possible to sort the search results according to their relevance to the query; at the same time, the accuracy and completeness of the search results can be verified according to the verification object.