基于字符型属性的数据库水印安全性研究  

Research on Database Watermarking Security Based on Character Attribute

作　　者：张立忠[1] 王军[1] 

机构地区：[1]沈阳化工大学计算机科学与技术学院,沈阳110142

出　　处：《科学技术与工程》2013年第1期206-209,共4页Science Technology and Engineering

摘　　要：对数据库水印安全问题进行了研究。提出了基于字符型属性的数据库数字水印方法。将水印信息表示为不可见的水印信号,并根据元组哈希值和字符属性值长度随机确定水印信号的嵌入位置,使水印安全性得到保障。重点分析了在元组添加、元组删除和属性值修改三种典型攻击中水印提取失败情况,以及由此引起的对水印匹配率的影响。最后在对实验数据分析讨论的基础上提出了数据库水印方案设计的原则。A digital watermarking algorithm through researching about the problem of database watermarking security has been proposed. The watermark information are represented as invisible watermark signals. The embed- ding location of watermark signal is randomly determined by using tuple hash value and character data length, ensu- ring the security of watermark. The change of watermark extraction and its impact on watermark matching rate in three common attacks including tuple addition, tuple deletion and attribute value modification are mainly analyzed. Finally, the design principles of database watermarking scheme are put forward based on analysis and discussion on experimental data.

关 键 词：字符型属性 数据库水印 水印提取 水印安全性 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]