基于Blakley门限方案的数据库水印技术  

Watermark Technology for Databases Based on Blakley Threshold Scheme

作　　者：彭沛夫[1] 张桂芳[2] 

机构地区：[1]湖南师范大学物理与信息科学学院,中国长沙410081 [2]湖南涉外经济学院,中国长沙410205

出　　处：《湖南师范大学自然科学学报》2007年第2期67-70,共4页Journal of Natural Science of Hunan Normal University

基　　金：湖南省自然科学基金资助项目(06JJ5116);湖南省教育厅科学技术研究基金资助项目(05C408)

摘　　要：提出了基于Blakley门限方案的数据库水印算法,实现了基于数据库的部分内容恢复水印信息,攻击者即使知道水印嵌入算法,也只能提取出经过分存后的水印信息,无法恢复出原始水印.Blakley门限方案的引入,增强了数据库水印的安全性和鲁棒性.在数据库安全控制中,该算法可以得到较好的应用.As the particularity of relational database, Watermark for databases request much more than for multimedia on robustness. A new watermark technology for databases based on Blakley Threshold Scheme is proposed in this paper. When recover watermark information, the new technology only need part content of the database. The experiments results show that the Blakley Threshold Scheme which is introduced into watermark for databases improve the safety and robustness. Even if the attacker knows the embedded arithmetic, he can only get the shared watermark information, and can＇t recover the original watermark. In the safety control for databases, this arithmetic has good application.

关 键 词：数字水印 数据库水印 数据库安全 门限方案 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]