同时本论文针对LSB水印系统的算法保密性差的特点，研究了为隐藏信息加密的DES算法。通过对多种空域水印算法优缺点的分析，提出了基于DES算法的空域数字图像水印加入方法。引入的加密方法确保了隐藏信息的安全性，并利用VC++6.0对该方法进行了设计实现-This thesis studied for LSB watermarking system algorithm confidentiality of poor the encrypted DES algorithm to hide information. The analysis of the advantages and disadvantages of a variety of airspace watermarking algorithm proposed adding digital image watermarking based on the DES algorithm airspace. The introduction of encryption methods to ensure the security of hidden information and using VC++6.0 the method designed to achieve