Implement a Secure Method of Privacy-conscious Approach on SQL Query using bb-PIR

Abstract

Private retrieval of public data is important when a client wants to query a public data service without revealing the query to the server. So, we want to use a practical and flexible approach for the private retrieval of public data called bounding box private information retrieval (bb-PIR). The bb-PIR can make a tradeoff between a cost of retrieval and the degree of privacy. And bb-PIR can provide secure data communication between a client and the server. Therefore, there is no doubt that bb- PIR is more practical because of its lower communication cost. This paper will report how Private Information Retrieval (PIR) can help users keep their sensitive information in an SQL query from being leaked. We will also show how to retrieve data from a relational database with bb-PIR by hiding sensitive constants contained in the SQL query.