中文摘要：

由于图像信息在网络进行传输时，很容易被非法截取，而隐写术能起到保护机密信息免受攻击的作用，因而得到了广泛的研究和应用。置乱技术虽然是隐写术的预处理过程，但它在隐写术中起着非常重要的作用。提出了一种新的基于小波变换和Feistel密码结构的图像置乱方法，其置乱的对象是载体图像中的小波系数，置乱算法基于Feistel密码结构，密钥采用变形约瑟夫遍历产生，属于“一次一密”的密钥生成。将该方法用于油料信息图像隐藏实验取得了良好的效果。

英文摘要：

During transmission image information can be easily intercepted, and the steganography can protect the secret information from being extensively researched and applied. Although the scrambling technology is the preprocessing of steganography, but the steganography plays a very important role in the information security. This paper presents a new scrambling method based on wavelet transformation and Feistel cryptography structure. The processing object is the wavelet coefficients of the image. Scrambling algorithm is based on the Feistel cryptography structure and the keys generated from by Joseph traverse. The key generation belongs to the definition of one-time pad. In addition, the method has been used to hide the images of oil information according to the results of the experiment and the scrambling algorithms have achieved good results.