The Research Of Database Encryption System

As the continuous development of science, the computer technology has rapidadvancement and the digital increasingly deepened in all aspects of society. The datasecurity issues became so important that the countries, enterprises and individualsmust face up to it. Database is the place for centralized access and management, andthe security of the database determined the data security directly. Unless any attackerbreaks the protection system or steals the control right of accessing to the database,you can easily control command to gets into all kinds of important data from adatabase. In view of the importance of databases, the form of security database getsmore and more attention. But the reality is that the development and application of thedatabase safety technology has hysteresis quality and limitations. The situation ofdatabase security is not optimistic.The encryption and decryption of database techniques solved to the databasesecurity in a great extent as it has appeared, development and application. Theencryption and decryption of database has great variety technology and the matter hasits own importance aspect to compete it. This article is mainly discussed the databaseencryption technology, the principle of the method and the basic technique. Take theexample for the reference on solution of the actual database security.this thesis is tostudy how the database encryption decryption system and database managementsystem combined with the original function of the database management system to aminimum, the database and decryption system will build the structural system of thetwo libraries. The database encryption decryption system of the Secure Shell, islocated between the DBMS and applications. Developed can call in your application,and can be packaged as dynamic link library, encryption decryption algorithm, thealgorithm is applied to the data encryption decryption engine. How the table fieldsadded decryption defined module to complete the table plus decrypt the definitionapplies to plus decrypt the data dictionary management.