基于RAR格式的文本水印冗余空间算法研究  

Research on RAR text watermarking based on redundant space

作　　者：刘晓威[1] 张金[1] 刘珊珊[1] 宫晓利[1] 卢睿[1] 

机构地区：[1]南开大学计算机与控制工程学院,天津300071

出　　处：《计算机工程与设计》2014年第6期2065-2071,共7页Computer Engineering and Design

摘　　要：随着数字出版形式的不断丰富、版权主体和发行渠道的不断变更,RAR类压缩文件由于工具易于获取,操作简单,压缩方法丰富等特征受到越来越多的关注和使用。为解决RAR类压缩文件的盗版侵权等问题,通过分析当前数字出版环境对于文本水印要求的变化,详细解析了RAR文件格式,采用遍历寻找冗余空间的方式对RAR格式中水印可嵌入空间进行了研究,提出了文件头部可选字节增项和无效块追加的嵌入方法,给出了算法实现和评价分析,通过实验验证了该方法的可行性。RAR format text is widely used in digital publishing for its simple operation,various compress method and easy access,especially at the time when digital publishing form,copyright owner and distribution channel become diverse.To protect the copyright of RAR format text,the change of the current digital publishing environment for text watermark＇ s demands is analyzed and the structure of RAR format is demonstrated briefly.Optional file head bytes added item and additional invalid block are proposed after the embedded space in RAR format is established by traversal method to list most possibility of redundancy space in it,followed by analysis of algorithm implementation and evaluation.Finally,a case study is presented to verify the validity of the method.

关 键 词：数字出版 数字版权 文本水印 压缩文件水印 RAR格式 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]