基于Shamir门限和html标签id的网页水印方法

A Webpage Watermarking Method Based on the Shamir Threshold and Html Label Id

html网页水印技术是信息隐藏技术的分支,目前虽已提出了一些方法,但相较其它水印技术,仍存在着水印的嵌入困难、容量有限和鲁棒性不强.针对于目前采用网页中单个标签或某个符号来表示单个水印位而使得嵌入容量有限的问题,提出了利用网页标签id来表示水印的思路,而网页标签id可用来表示多位水印值.方法中,首先是把网页中重要内容形成消息摘要并和表示版权的二值图像异或运算后,作为水印信息,然后经Shamir门限方案后分解,把其作为网页标签id值的方法来分存嵌入网页.经实验验证,该方案有较好的嵌入容量、鲁棒性和隐蔽性.

Html webpage watermarking technology is a information hiding technology branch, at present several methods have been proposed, but compared to other watermark technology, there still exist problems about watermark embedding difficulties, limited capacity and weak robustness. Aiming at the limited embedding capacity question by using the single label or a symbol in webpage to indicate that a single watermark bit, a method is proposed to use the id value of label in webpage to represent watermark, and the id value of label in webpage can be used to express many watermarking bits. First in this method is to xor with the message digest of the important content in webpage and bits of binary image to represent copyright, and then by the Shamir threshold decomposition scheme, the watermark as the id value of label in webpage is deposited the webpage. Proved by experiments, the scheme has better capacity of embedding, robustness and invisibility.