摘要
针对已提出的通过设置字符的"字符网格"属性进行信息隐藏的方法不具有抵抗添加、删除攻击的缺点,结合字体缩放的方法,同时引入定位密钥的思想,提出了一种改进的算法,即通过不同的方法把秘密信息多重、分散均匀的嵌入到文档文本中。实验表明,改进后的算法具有更好的隐藏性,在一定程度上提高了抵抗添加和删除攻击的能力;秘密信息的安全性和嵌入位置的灵活性得到了很大的改善。
For the mothod that hides the information through setting the character’s ＂character grid＂ attributes could not resist adding or deleting attack, in combination with the font scaling method and by introduction of the positioning key, an improved algorithm is proposed, in which the confidential information is embedded in multiple times and spread evenly into the text by different means. Experimental results show that the improved algorithm is of a fair hiding, could raise its ability in resistance of adding and deleting attack, and enhance the security of secret information and the flexibility of embedding position.
出处
《通信技术》
2010年第8期21-23,共3页
Communications Technology
关键词
字符网格
字体缩放
定位密钥
character grid
font scaling
positioning key
