Функция кодирования в base64

const char Base64Table[64] =
  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
int __stdcall encode_b64(const unsigned char *buftoenc, int bufsize,
   unsigned char *encbuf)
  {
    // выделяем память под временный буфер
    unsigned char *buftemp = new unsigned char[bufsize + 3];
    memset(buftemp, '\0', bufsize+3);
    memcpy(buftemp, buftoenc, bufsize);
 
    int i = 0;
    int b64byte[5];
 
    while (i < bufsize)
      {
        b64byte[0] = buftemp[i] >> 2;
        b64byte[1] = ((buftemp[i] & 3) << 4)|(buftemp[i + 1] >> 4);
        b64byte[2] = ((buftemp[i + 1] & 0x0F) << 2)|(buftemp[i + 2] >> 6);
        b64byte[3] = buftemp[i + 2] & 0x3F;
        if(b64byte[0] == 0)
          encbuf[i + (i / 3)] = '=';
        else
          encbuf[i + (i / 3)] = Base64Table[b64byte[0]];
 
        if(b64byte[1] == 0)
          encbuf[i + (i / 3) + 1] = '=';
        else
          encbuf[i + (i / 3) + 1] = Base64Table[b64byte[1]];
 
        if(b64byte[2] == 0)
          encbuf[i + (i / 3) + 2] = '=';
        else
          encbuf[i + (i / 3) + 2] = Base64Table[b64byte[2]];
 
        if(b64byte[3] == 0)
          encbuf[i + (i / 3) + 3] = '=';
        else
          encbuf[i + (i / 3) + 3] = Base64Table[b64byte[3]];
        i += 3;
      }
 
    delete buftemp;
    return strlen(encbuf);
  }

void __fastcall TForm1::Button3Click(TObject *Sender)
{
AnsiString ss,ss1; int a;
ss=Edit1->Text;
a=Edit1->Text.Length();
encode_b64(ss,a,ss1);
Edit2->Text=ss1;
}

void __fastcall TForm1::Button3Click(TObject *Sender)
{
unsigned char *ss,*ss1;
int a;
 
ss=Edit1->Text.c_str();
a=Edit1->Text.Length();
encode_b64(ss,a,ss1);
Edit2->Text=*ss1;
}

unsigned char *ss,*ss1;
 
int a = Edit1->Text.Length();
ss = new char[a];
ss = (char*)(Edit1->Text.c_str());
ss1 = ss;
encode_b64(ss,a,ss1);
Edit2->Text = (char*)ss1;
delete []ss;
delete []ss1;

#include <memory>
//----------------------------------------------------------------------------
String Base64Encode(String Input)
{
    std::auto_ptr<TIdEncoderMIME> IdEncoderMIME1(new TIdEncoderMIME(NULL));
    return IdEncoderMIME1->EncodeString(Input);
}

 Form1->IdBase64Encoder1->Reset();
 Form1->IdBase64Encoder1->AutoCompleteInput = true;
 Edit2->Text = Form1->IdBase64Encoder1->CodeString(Edit1->Text);