小波数字水印在电力系统信息安全中的应用

随着电力系统信息化的快速发展，信息安全问题已是电力系统中一个急待解决的难题之一。为保证电力系统中待传递数据的安全性，研究了利用一种基于小波的数字水印技术把电力系统中的传输数据隐藏起来。具体以电力市场环境下，研究采用数字水印技术将电量交易价格隐藏，保证了电量交易价格不被竞争对手截获，从而有效地保证了电力系统信息的安全性。数字水印的实现方案是：数字水印的生成、嵌入和检测。通过Matlab编程和仿真，验证了采用该方法的有效性。

Application of wavelet-based digital watermark in power system information security

With the rapid development of the informization in power system,the information security is one of the most urgent problems in power system . To ensure the secure data delivery in power system,a method of concealing the data by a kind of wavelet-based digital watermark technique is studied. In the environment of power market,the electricity bargain price is thus con-cealed,which ensures the rivals will not intercept it. The procedures contain the generation,embed-ding and detection of digital watermark. By programming and simulation with Matlab,the validity of the proposed method is verified.