摘要
随着信息技术的发展,数据库在信息管理的应用已非常广泛。为了确保数据库的安全,提出基于内层加密函数对数据库表的动态变换加密技术,动态变换加密能使当前行、列数据的加密密钥做到互不干扰。由于经济类财务数据以数值型数据为主,把明文转化为密文后,密文还是数值,与原数据表述物品的数量、金额的方式无差别,因而从数据外观判断不了数据的真实性与合法性,该技术既对数据进行了加密,同时也扰乱了破解者的视线,做到更深层次地保护数据库的目的。
With the development of information technology,the database is quite extensively applied to information management.In order to ensure database security,dynamic transformation encryption methods based on inner encryption function upon database tables are proposed.Dynamic transformation encryption can prevent the encryption keys of present rows or columns from disturbing each other.Since the economic class financial data mainly comprises of numerical data,when the plain text is converted into cipher text,the cipher text remains numerical,keeping the same representation manner of commodity numbers and prices as the original data,so that it is impossible to judge the authenticity and legitimacy of the data just from its appearance.Therefore it not only encrypts data but also deceives the cracks＇ vision so as to protect the database at a deeper level.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第3期290-293,共4页
Computer Applications and Software
基金
罗定职业技术学院重点科研课题(KY10032)
关键词
数据加密
动态变换
数据库
Data encryption Dynamic transformation Database
