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实现的空域LSB算法，可输入密钥加密文本信息，有较好的交互界面(MATLAB implementation of the airspace LSB algorithm, you can enter key encryption, text information, there is a better interactive interface)