Speed up querying encrypted data on outsourced database

The rapid development of cloud computing has appeared outsourced database and that is essential solution to reduce the cost for data owners (DOs). The user's data which is stored on the cloud will face many risks from attackers including service providers. To ensure the security of data, the DOs encrypt data before storing on the cloud. However, the encrypting before storing will increase the processing time to encode/decode records when querying to the database. Therefore, speeding up querying on the encrypted database is essential in an environment where data need to be encrypted before pushing to the cloud. In this paper, we propose a new method to improve the speed of querying on the encrypted database using parallel computing. The experimental results prove the effectiveness of our proposed method. © 2017 ACM.