计算机技术与发展Issue(2)：73-76,4.DOI:10.3969/j.issn.1673-629X.2016.02.017
基于雅克比符号的文本信息隐藏
Text Information Hiding Based on Jacobi Symbol
摘要
Abstract
Text information hiding is an important way of copyright maintenance. Text information hiding algorithms that hide information through slightly zooming in or zooming out the characters are not robust,and nor can they resist reformat attacks. In this paper,based on the assumption that factoring a large integer is hard,propose an improved algorithm which hides or not hides text information by determi-ning whether a number is a quadratic residue module a big integer or not. Judging by Jacobi symbol text vector element is quadratic resi-due. If a quadratic residue,which Jacobi symbol is"1",the secret information of each byte ASCII code value,scaling values are replaced with the characters. If the non-quadratic residue,scaling text vector elements will keep the standard. This method can disperse into the text secret information carrier. The improved algorithm can better hide text information and can resist adding or deleting attack. It is simple and flexible,and can be applied to different language texts.关键词
文本载体/信息隐藏/雅克比符号/二次剩余/秘密钥Key words
text carrier/information hiding/Jacobi symbol/quadratic residue/secret key分类
信息技术与安全科学引用本文复制引用
左祥建,杨晓莉..基于雅克比符号的文本信息隐藏[J].计算机技术与发展,2016,(2):73-76,4.基金项目
国家中央高校基本科研业务费专项资金项目(GK201504017) （GK201504017）
包头市科技局项目(2014S2004-2-1-15) （2014S2004-2-1-15）
