摘要
根据关系数据库的特殊性,结合差错控制理论,文章将以中国剩余定理为理论基础的密钥分存思想引入关系数据库数字水印算法。首先对水印信息分存,然后用分存值的二进制序列顺序替换数据库中所选字段值的特定比特位。该算法具有隐蔽性好,可基于部分内容恢复水印信息,水印恢复不需要原始数据库,很好的安全性等特点。在数据库的版权保护中,该算法具有很好的应用价值。
A digital watermarking for relational databases based on Chinese remainder theorem is proposed in this paper,This algorithm which based on relational databases＇particularity and combined with error correction technology brings secret sharing into digital watermarking.Watermarking is embedded by displacing the special bits of the value of selected fields in database by binary sequences of shared information for watermark.This algorithm is obscure,blind and safe.Moreover,this algorithm only needs a part of shares in the recover process.This algorithm has a wide foreground in protecting the copyright of Database.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第7期135-136,173,共3页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(编号:60373062)
教育部科研重点项目(编号:03092)
湖南省杰出中青年基金资助项目(编号:02JJYB012)
关键词
数字水印
数据库水印
中国剩余定理
差错控制
digital watermark,database watermark,Chinese remainder theorem,error control
