CAJ | 학술논문

为了提高数据库的安全,防止越过权限控制的信息泄露,利用数据项这一最小粒度作为加密单元,以增强数据库安全.分析了目前数据库中加密数据的方案.提出一种基于平均差值排序的密态数据库检索方法,以隐藏明文序列防止动态追踪.对字段级加密,通过引入干扰因子来隐藏信息的泄露.对可能出现的有限值域信息泄露进行了研究.对文献[5]提出的防泄露算法进行了分析.实验结果表明:改进的方法在增强数据安全的同时,也具有较短的响应时间.
위료제고수거고적안전,방지월과권한공제적신식설로,이용수거항저일최소립도작위가밀단원,이증강수거고안전.분석료목전수거고중가밀수거적방안.제출일충기우평균차치배서적밀태수거고검색방법,이은장명문서렬방지동태추종.대자단급가밀,통과인입간우인자래은장신식적설로.대가능출현적유한치역신식설로진행료연구.대문헌[5]제출적방설로산법진행료분석.실험결과표명:개진적방법재증강수거안전적동시,야구유교단적향응시간.
In order to improve database security,and to avoid information exposing of access control strategy,data item was used as the encrypted principle,applying its property of basic granularity to strengthen the database security.Some solved method was given in the database currently.A new query algorithm was used to acquire improved encrypted data.The proposed algorithm uses average-value as principle to conceal the clear statement sequence.For field encryption,the information exposing was avoided by interference factor.A kind of information exposure of encrypted database was given in limited value area.The simulation results proved that the database security of modified method is higher than other method,and modified method has shorter response time.