Privacy-Preserving Multi-Keyword Ranked Search over Encrypted Cloud Data

Privacy-Preserving Multi-Keyword Ranked Search over Encrypted Cloud Data With the advent of cloud computing, data owners are motivated to outsource their complex datamanagement systems from local sites to the commercial public cloud for great flexibility and economic savings. But for protecting data privacy, sensitive data have to be encrypted before outsourcing, which obsoletes traditional data utilization based on plaintext keyword search. Thus, enabling an encryptedcloud data search service is of paramount importance. Considering the large number […]


Privacy-Preserving and Content-Protecting Location Based Queries

Privacy-Preserving and Content-Protecting Location Based  Queries In this paper we present a solution to one of the location-based query problems. This problem is defined as follows: (i) a user wants to query a database of location data, known as Points Of Interest (POI), and does not want to reveal his/her location to the server due to privacy concerns, (ii) the owner of thelocation data, that is, the location server, […]