#include <cstdlib>
#include <iostream>
#include <string>
#include <stdio.h>
#include "md5.h"
using namespace std;
char* szString = "Some string you want to generate an MD5 key for.";
int main(int argc, char *argv[])
{
    char* sString = MD5String(szString);
    cout << "Some string you want to generate an MD5 key for." << "MD5 Output: " << sString;
    system("PAUSE");
    return EXIT_SUCCESS;
}

typedef unsigned       int uint4;
typedef unsigned short int uint2;
typedef unsigned      char uchar;
char* PrintMD5(uchar md5Digest[16]);
char* MD5String(char* szString);
char* MD5File(char* szFilename);
class md5
{
public:
 md5() { Init(); }
 void Init();
 void Update(uchar* chInput, uint4 nInputLen);
 void Finalize();
 uchar* Digest() { return m_Digest; }
private:
 void Transform(uchar* block);
 void Encode(uchar* dest, uint4* src, uint4 nLength);
 void Decode(uint4* dest, uchar* src, uint4 nLength);
 inline uint4 rotate_left(uint4 x, uint4 n)
                  { return ((x << n) | (x >> (32-n))); }
 inline uint4 F(uint4 x, uint4 y, uint4 z)
                  { return ((x & y) | (~x & z)); }
 inline  uint4 G(uint4 x, uint4 y, uint4 z)
                  { return ((x & z) | (y & ~z)); }
 inline  uint4 H(uint4 x, uint4 y, uint4 z)
                  { return (x ^ y ^ z); }
 inline  uint4 I(uint4 x, uint4 y, uint4 z)
                  { return (y ^ (x | ~z)); }
 inline void FF(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac)
                  { a += F(b, c, d) + x + ac; a = rotate_left(a, s); a += b; }
 inline void GG(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac)
                     { a += G(b, c, d) + x + ac; a = rotate_left(a, s); a += b; }
 inline void HH(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac)
                     { a += H(b, c, d) + x + ac; a = rotate_left(a, s); a += b; }
 inline void II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac)
                     { a += I(b, c, d) + x + ac; a = rotate_left(a, s); a += b; }
private:
 uint4  m_State[4];
 uint4  m_Count[2];
 uchar  m_Buffer[64];
 uchar  m_Digest[16];
 uchar  m_Finalized;
};