AES - 最新的加密标准。这个代码的可裁剪性比较好，非常适合嵌入式编程。

基于直方图的水印嵌入和提取实现，各种水印攻击，如重抽样，加噪，滤波，尺度变换，局部裁剪-Based on the histogram of the watermark embedding and extraction to achieve a variety of watermark attacks, such as re sampling, noise, filtering, scale transform, local cropping