摘要
This paper studies the digit watermark technology of numeric attributes in relational database for database's information security.It proposes a new mechanism based on similar clouds watermark and gives the concept of similar clouds.The algorithm SCWA that can insert the meaning watermark and detect it from the watermarked data is described.The mechanism can effectively and broadly scatter the watermark in the database;therefore the watermark is very robust.
基金
Supported by the National Natural Science Foun dation of China(60273072)
863 Hi-technique Research(2002A A4Z3450)
作者简介
HUANG Min(1979-),fermale,Ph.D candidate,research direction:database's information security.E-mail:hm172213@hotmail.com;To whom correspondence should be addressed:CAO Jia-heng.E-mail.jhcao@whu.edu.dn
