本网站上下载的混沌加密的m代码，通过logistic映射生成了混沌序列并调制，实现了对水印信息的预处理。-The website of the chaotic encryption of m code, through the logistic chaotic sequence generated mapping and modulation to achieve a pre-processing of watermark information.

基于LOGISTIC混沌映射的灰度图像加密和解密，MATLAB源码-the matlab code for image encryption and decryption based on logistic map