Research on Security Mechanisms of Outsourced Database
外包数据库系统安全机制研究

In the outsourced database model, organizations outsource their data management needs to an external service provider. The service provider offers mechanisms to create, store, update and query the database for the organizations. Since a server is almost never fully trusted, this model introduces several research issues related to data security. This paper discusses the classification of database security system, studies the architecture of outsourced database, overviews the state-of-the-art in database encryption, query policy of encrypted database, privacy protection, data integrity verification, and database copyright protection based on database watermarking, introduces the latest progress in security mechanisms of outsourced database, and looks ahead its future development. A conclusion is drawn at the end of this paper that it is critical to integrate various security mechanisms and trade off the security and the availability to build an outsourced database.