基于隐藏密钥可以，将秘密信息msg嵌入到二值载体图像cover，算法简单，主要适合于将密文隐藏在BMP格式的文档里。-Key can be based on hidden, secret information will be embedded into the binary vector msg image cover, simple algorithm, mainly for the cipher text hidden in the BMP format documentation.

matlab中关于图片低四位隐藏以及提取的源码，cover为载体图象，message为信息图象，mix为隐藏图象，msg为提取后图象-the matlab About the picture low four hidden and extract the source

Import MSG II Solar radiation product to MiraMon