[Help]Rijndael Aes encrypt file

Hello I'm new in c++ and i had a script that encoding setting files. It says error about Rijndael.h because i have not it yet. But i know it gives error again when i have it. Can you explain me for step by step that what must i do generally for complete this script?

Code :

PHP Code:


			
#include "stdafx.h"

#include "Rijndael.h"

#include <fstream>

#include <iostream>

using namespace std;





int _tmain(int argc, _TCHAR* argv[])

{

    CRijndael Rij;

    char DecryptStr[16] = {0};

    char DecryptedStr[20] = {0};

    char filestr[999999] = {0};

    Rij.MakeKey("zontim",CRijndael::sm_chain0, 16,16);



    FILE *filein;

    filein = fopen(argv[1],"rb");

    fseek(filein,0,SEEK_END);

    int size = ftell(filein);

    rewind (filein);

    fseek(filein,0,SEEK_SET);

    char *bufin = (char*)malloc(sizeof(char)*size+1);

    memset(bufin,0,sizeof(char)*size);

    fread(bufin,1,size,filein);



    FILE *fileout;

    char outputname[999] = {0};

    sprintf(outputname,"%s.set",argv[1]);

    fileout = fopen(outputname,"a+");



    //f�r ft

    

    char bla[9999999] = {0};

      for(int i = 0;i < (size);i+=16)

      {

          Rij.Encrypt(bufin+i, filestr,16);

          strcat(bla,filestr);

     }

    for(int i = 0;i < (size);i++)

    {

        bla[i+1] = bla[i];

    }

     bla[0] = 0x0b;

     fwrite(bla,1,(size+1),fileout);

    fclose(filein);

    fclose(fileout);

    free(bufin);

    cout << "fertig";

    cin.get();

    return 0;

}