Digital watermark insertion method and device in color text files

Abstract

The invention provides a digital watermark insertion method and device in color text files. The digital watermark insertion method includes acquiring color text files to be processed; analyzing color spaces of each pixel in the color text files, determining color types which the pixels belong to according to the color space, wherein the color types include binary colors and colors; dividing the color text files according to the color types and acquiring binary pixel files corresponding to the binary colors and color pixel files corresponding to the colors; inserting digital watermarks into the binary pixel files to obtain binary pixel files with watermarks; integrating the binary pixel files with the watermarks and the color pixel files. By dividing the color text files into the binary pixel files and the color pixel files according to the color space and inserting the watermarks into the binary pixel files, integrity of color pixel information in the color text files is ensured, and availability and safety of the color text files are improved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a method and device for embedding digital watermarks in color text files. Background technique [0002] As an important branch of information hiding technology, digital watermark technology is to embed some identification information, namely digital watermark, directly into digital carriers, such as text, images, audio and video, etc., without affecting the use value of the original carrier. Through the information hidden in the carrier, the purpose of confirming content creators, buyers, transmitting secret information or judging whether the carrier has been tampered with can be achieved. As an important source of information in people's lives, electronic or paper text files use digital watermarking technology to embed identification information such as the identity information of the file creator, the identity information of the buyer, and digital signatures into the text fi...

AI Technical Summary

Problems solved by technology

[0005] In view of the above existing problems, the present invention provides a method and device for embedding digital watermarks in color text files to overcome the poor usability and low security of color text files in the prior art due to the loss of color file information due to the need for file conversion Defects

Images