C++的加密(用MD5)？

//-------------------------------------------------------------------//
// MD5加密类 Version 1.0 //
// //
// Create: 2003-10-08 Modify: 2003-10-08 Complete: //
// //
//-------------------------------------------------------------------//
#ifndef __MD5__
#define __MD5__

#include "common.hpp"
#include "cstring.hpp"

typedef unsigned char BYTE;
typedef unsigned long WORD32;

// 离散算法类
class Hash
{
protected:
void CorrectEndianess(WORD