数据加密技术，文件文本加密和解密，利用图片加密文件-Data encryption technology, the text of the document encryption and decryption

本实例主要通过CFile类的Read方法分别读取图片文件和文本文件，然后将图片文件的每个字节和文本文件的每个字节进行异或运算。-This example mainly through CFile class Read method reads the picture files and text files, and then each byte of image files and text files for each byte XOR.