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 bbPIR 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.
