一种可用于电力系统隐蔽通信的数字水印方法

A Digital Watermarking Technology Used for Covert Communication in Electric Power System

针对电力系统运行过程中遇到的安全问题,将文本水印技术运用到电力系统中,是数字水印技术应用的一个拓展。针对提高文本文档的数据安全问题,以电力系统中电力设备信息的传输为例,提出将一种基于改变字符下划线颜色嵌入水印信息的算法。该算法在肉眼不可分辨的区域内,通过微调字符下划线颜色嵌入水印信息。对算法进行了仿真与攻击实验,实验结果表明,本算法具备良好的透明性,可以有效对嵌入的水印信息进行隐蔽通信,且此算法可以抵抗常见的格式攻击,具备一定的鲁棒性。

Aiming at the security problems of electric power system when it is running,applying text watermarking technique into the electric power system will be a new development. In order to improve the data security problems of documents,an algorithm of embedding watermarking information based on changing the color of character underlines is proposed. The algorithm takes the tran smitting taking transmitting information of electric power equipment for ex-ample. The algorithm slightly changes the color of character underlines in the range that cannot be identified by the naked eye to embed watermarking information. The algorithm is tested by simulation and attack experiments. The ex-perimental results show that the algorithm has good imperceptibility which makes covert communication with embed-ded watermarking information more effectively,and can resist the common format attacks,and has certain robustness.