Encryption over Semi-trusted Database

摘要

Encryption is a well established technology for protecting sensitive data, but developing a database encryption strategy must take many factors into consideration. In the case of semi trusted databases where the database contents are shared between many parties, using server-based encryption (server encrypts all data) or client-based encryption (client encrypts all data) is not sufficient to protect semi-trusted databases. In this paper we propose Mixed Cryptography Database (MCDB), a novel framework to encrypt semi-trusted databases over untrusted networks in a mixed form using many keys owned by different parties.