Research And Implementation Of Database Encryption System

Information systems of Web structure are more and more applied in every domanial management system as the rapid development of the computer network technology. Owing to Web information systems exist in the network structure on which information security has met the huge threat. Therefore the research of Web information system's security has become the significant research field. As the core element of the web information system, the security of the database system will affect the security of the information system directly. The database encryption has become the important way to improve the security of database.Based on the analysis and research of existing database encryption technology, the paper provides a method of database encryption that applies to web structure. And, the paper takes use of Java platform to design and implement an encryption system for voucher information management system. In the encryption system, this paper adopts a mixed encryption model of combining symmetric key and asymmetric keys, and provides an effective and secure multilevel management for system encryption-keys. Through researching every function module of the system, the basal designing principles and implementing process, which include the system of log in and validating, decryption engine, encryption-keys management and so on, are presented in the paper, and the system takes advantage of the JCA and JEC in JAVA to realize the process of encryption. It is indicated that the design and implement of the system has satisfied the security needs of database that voucher information management requested by test and comprehensive analysis of the system.