Processing private queries over an obfuscated database using hidden vector encryption

Abstract

Outsourcing data in the cloud has become nowadays very common. Since generally speaking cloud data storage and management providers cannot be fully trusted, mechanisms providing the confidentiality of the stored data are necessary. A possible solution is to encrypt all the data, but of course - this poses serious problems about the effective usefulness of the stored data. In this work, we propose to apply a well-known attribute-based cryptographic scheme to cope with the problem of querying encrypted data. We have implemented the proposed scheme with a real-world, off-the-shelf RDBMS and we provide several experimental results showing the feasibility of our approach.