An Effective Encrypted Scheme Over Outsourcing Data for Query on Cloud Platform

Abstract

With the proliferation of cloud platforms, users are inclined to outsource their encrypted data to cloud platforms. However, the existing encryption schemes only provide users with limited query types over encrypted data. Meanwhile, if users encrypt their data by deterministic encryption, their encrypted data will be easily subject to the frequency attack. Besides, users' data privacy is likely to be disclosed to the cloud server when their encrypted data is updated on cloud platforms. To address these problems, in this paper, we propose an effective encrypted query scheme over outsourcing data on cloud platforms. In our scheme, users' data is encrypted based on all possible queries to meet users' diverse query demands. Furthermore, a double AES encryption method is adopted to cope with the frequency attack existing in deterministic encryption. To protect users' privacy when their data is updated, a neighbor rows exchange method is designed in our scheme. The theoretical analysis and comparative experiments demonstrate the effectiveness of our scheme.

Keywords

• Cloud platform
• encrypted data
• possible queries encryption
• double AES encryption
• neighbor rows exchange