摘要
对数值型数据保持顺序加密方法进行了分析,在此基础上提出了一种在关系数据库中针对字符数据的保序加密方法。详细阐述了其加密原理和密文索引结构,对重复性数据的加密处理和算法抗攻击性进行了分析。最后分别从时间开销、空间开销两个方面对算法进行了实验验证,实验结果表明该方法既保证了数据库安全性,又解决了加密数据库的查询性能问题。
In this paper the order preserving encryption for numeric data is analyzed. An order preserving encryption method for character data in relational databases is proposed. The encryption principle and index structure of encryption data are developed. The encryption processing of duplicate data and algorithm exposure are analyzed. The algorithms are verified in the experiments in the time consumption and space consumption, and experiment results show that the method can ensure database security, and the query performance problem of encryption database is solved effectively.
出处
《无线电工程》
2006年第4期1-3,共3页
Radio Engineering
关键词
数据库安全
数据库加密
索引
字符数据
database security
database encryption
index
character data
