基于密文索引的空管敏感信息检索方法

SENSITIVE ATC INFORMATION RETRIEVAL METHOD BASED ON CIPHERTEXT INDEX

密文索引方法最基本的思想是将数据库中的字符数据映射并调整为索引值,并将SQL语句转换为可以作用于索引属性列的形式。这种方法可以提高空管数据库系统中对加密字符数据内容的检索效率,并确保空管数据库系统的安全性。提出一种索引生成算法,并应用空管数据库系统的一个案例分析实现这种方法。最后完成两个实验,实验一设计了冲突检测算法,通过分析冲突概率,可以得出应用密文索引方法进行SQL查询时的效率提高方式;实验二验证了密文索引方法对SQL查询效率的提升效果。

The basic idea of ciphertext index method in this paper is to map and adjust the character data in database into index value,and to convert the SQL statements to the form capable of applying to the index attribute column,this method can improve the retrieval efficiency on encrypted character data content in ATC database system,and ensures the security of ATC database system.We propose an index generation algorithm,and implement it by applying a case analysis in ATC database system.Finally we complete two experiments,in experiment one we design the conflict detection algorithm,by analysing the conflict probability we can obtain the way to improve the efficiency of applying cipher-text index method in SQL query,experiment two verifies the improvement effect of ciphertext index method on SQL query efficiency.