关键词: 数据库加密 安全 信息分解 信息合成

Abstract:

Aiming at the issues of lower efficiency on database queries or processing and limited SQL queries, a kind of database encryption method is presented   in this paper. Unlike traditional database encryption methods, it does not rely on data encryption. According to the characteristics that the data is st ructured in relational databases,it implements data security through information dissociation and information association. Meanwhile, the definition and   rules of information dissociation and association are presented in this paper, and the query processing of the method is described. Finally, a performa nce comparison is performed with traditional database encryption through experiments.

Key words: （database encryption, security, information dissociation, information association）