基于JPEG图像的密写技术，是一个MATLAB程序，大家可以试试看，我觉得可以-JPEG-based image steganography techniques, is a MATLAB program, we can give it a try, I think we can

md5算法的实现，用vc++开发，一个实验，但是可以实现加解密，挺好的一个程序，配合刚才的报告。-md5 algorithm implementation, using vc++ development, an experiment, but the encryption and decryption can be achieved, in very good shape a program to meet the earlier report.

文件的加密程序！可以使用，可能存在不好用的地方！-File encryption program! You can use, there may be a bad place to use!