Database encryption system, method and program

Abstract

Provided is a system for suppressing database information leakage, and improving processing efficiency. A user system (20) for connecting to a database system (10) via a network (30) is provided with means (23, 24) for managing key information for encryption and decryption, and a storage unit (25) for storing the safety setting information for data and/or metadata. The user system (20) is further provided with an application response means (22) for: determining whether encryption of a database operation command is necessary; selecting an encryption algorithm according to the data and/or metadata when encryption is necessary, transmitting the database operation command to a database control means (12) after encryption thereof, and executing the database (11) operation; transmitting the database operation command to the database control means (12) when encryption is not necessary, and executing the database operation; receiving a processing result transmitted by the database control means; executing the necessary decryption or conversion when decryption or conversion of the processing result data and/or metadata is necessary; and returning the processing result data and/or metadata as a response to the database operation command. The user system (20) is also provided with a safety setting means (26) for setting the safety information for data stored in the database.

Description

technical field [0001] (References to related applications) [0002] This application claims the priority of Japanese Patent Application No. JP2011-247908 (application date is November 11, 2011), the entire contents of which are incorporated herein by reference. The present invention relates to information encryption technology, and in particular to database encryption system, method and program. Background technique [0003] Recently, the use of cloud computing, which provides Internet-based software infrastructure, applications, operating system (OS), etc., to clients is increasing. It can be expected that the use pattern of outsourcing in the cloud for databases will also increase in the future. [0004] However, with database outsourcing to the cloud, it is especially important to prevent information leakage from the database. In order to prevent leakage of information from the database, various methods of encrypting data recorded in the database have been proposed so...

AI Technical Summary

Problems solved by technology

In this system, even if there is information leakage on the

Images