利用BMP存储图像的冗余，将文本文件加密隐藏于BMP图片之中。-use BMP image storage redundancy and text files in BMP encryption hidden among pictures.

文字采用AES算法实现加密，然后再通过lsb算法将文字隐藏到bmp图片中。-Text using AES encryption algorithm, and then hide the text by lsb algorithm to the bmp image.