根据自己的加密要求可以修改，MD5加密处理单元。

使用的是API编程,可格式化、校验和读写特殊扇区。可用作Windows下的磁盘加密。本函数还有以下两个缺点以待改进： 1.本函数还只能读能读 A: 和 B:,即只能对软盘操作 2.不能改变磁盘扇区大小，只能是标准的 512 个字节。 参数说明: command 操作: 0 重置磁盘 2 读扇区 3 写扇区 4 校验磁道 5 格式化磁道 8 得到设备参数 (int 1EH) drive 驱动器 A:=0 B:=1 head 磁头号,范围 0 - 1 track 磁道号,范围 0 - 84 ( 80 - 84 为特殊磁道，通常用来加密 ) sector 扇区号,范围 0 - 255 ( 19 - 255 为非标准扇区编号，通常用来加密) nsectors 每次读或写的扇区数,不能超出每磁道的最大扇区数 buffer 数据写入或读出的缓冲区，大小为 512 个字节 返回值 ( 同 Int 13H ): 0x0 成功 0x1 无效的命令 0x3 磁盘被写保护 0x4 扇区没有找到 0xa 发现坏扇区 0x80 磁盘没有准备好-using the API programming, formatting and testing literacy and special sectors. Windows can be used as a disk encryption. This function has the following two shortcomings to be improved : 1. This function can only be read, read A : and B : that only the right to operate two floppy disks. No change disk sector size, the standard is only 512 bytes. Parameter Description : command operations : 0 Reading 2 replacement disk write Sector Sector 3 4 5 checksum track to be formatted track eight equipment parameters (int 1EH) drive drive

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md5通用加密算法，采用C编写，也可以在C++下使用-General md5 encryption algorithm, using C to prepare, you can also use C++

My stuff is aimed at teaching, not efficiency. The others are probably much better implementations. The last one has both C++ and Java versions where my stuff is all C. So lots of choices!

硬件求解平方根源代码加密 (硬件求解平方根的，将license添加到原有的MaxplusII或QuartusII的license中就可以直接使用，但源代码加密。altera提供 )-solving square root of the hardware encryption code (square root of the hardware solution will be added to the original license MaxplusII or Quartus II of the license which can be directly used, but the source code encryption. ALTERA provide)

美国加密中心公布的DES程序-American Center for the encryption process DES

3DES encryption utility

基于JAVA语言的MD5编程，可以进行实验讲解，有输入输出示范-based on MD5 Java programming language, can conduct experiments to explain, input-output model

DES与RSA算法的解析与推演。不是单纯理论的讲解，带着一些应用的角度让对密码学有兴趣的人能很容易理解略显深奥的密码算法。-DES and RSA algorithms with analytic deduction. Not purely theoretical explanations, with the perspective of some applications of cryptography to allow those who are interested can easily understand the slightly esoteric cipher.

打包文件，VB源码，还好，值得学习和使用.-Packing paper, VB source, Fortunately, it is worth learning and use.