static const char MimeBase64[] = {
	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
	'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
	'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
	'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
	'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
	'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
	'w', 'x', 'y', 'z', '0', '1', '2', '3',
	'4', '5', '6', '7', '8', '9', '+', '/'
};

static int DecodeMimeBase64[256] = {
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 00-0F */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 10-1F */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,  /* 20-2F */
	52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,  /* 30-3F */
	-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,  /* 40-4F */
	15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,  /* 50-5F */
	-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,  /* 60-6F */
	41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1,  /* 70-7F */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 80-8F */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 90-9F */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* A0-AF */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* B0-BF */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* C0-CF */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* D0-DF */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* E0-EF */
	-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1   /* F0-FF */
};

typedef union {
	struct {
		unsigned char c1, c2, c3;
	};
	struct {
		unsigned int e1 : 6, e2 : 6, e3 : 6, e4 : 6;
	};
} BF;

int endian = 0; // little : 0, big : 1

void base64e(char *src, char *result, int length) {
	int i, j = 0;
	BF temp;

	if (endian == 0) { // little endian(intel)
		for (i = 0; i < length; i = i + 3, j = j + 4) {
			temp.c3 = src[i];
			if ((i + 1) >= length) temp.c2 = 0x00;
			else temp.c2 = src[i + 1];
			if ((i + 2) >= length) temp.c1 = 0x00;
			else temp.c1 = src[i + 2];

			result[j] = MimeBase64[temp.e4];
			result[j + 1] = MimeBase64[temp.e3];
			result[j + 2] = MimeBase64[temp.e2];
			result[j + 3] = MimeBase64[temp.e1];

			if ((i + 1) >= length) result[j + 2] = '=';
			if ((i + 2) >= length) result[j + 3] = '=';
		}
	}
	else { // big endian(sun)
		for (i = 0; i < length; i = i + 3, j = j + 4) {
			temp.c1 = src[i];
			if ((i + 1) >= length) temp.c2 = 0x00;
			else temp.c2 = src[i + 1];
			if ((i + 2) >= length) temp.c3 = 0x00;
			else temp.c3 = src[i + 2];

			result[j] = MimeBase64[temp.e4];
			result[j + 1] = MimeBase64[temp.e3];
			result[j + 2] = MimeBase64[temp.e2];
			result[j + 3] = MimeBase64[temp.e1];

			if ((i + 1) >= length) result[j + 2] = '=';
			if ((i + 2) >= length) result[j + 3] = '=';
		}
	}
}

void base64d(char *src, char *result, int *length) {
	int i, j = 0, src_length, blank = 0;
	BF temp;

	src_length = strlen(src);

	if (endian == 0) { // little endian(intel)
		for (i = 0; i < src_length; i = i + 4, j = j + 3) {
			temp.e4 = DecodeMimeBase64[src[i]];
			temp.e3 = DecodeMimeBase64[src[i + 1]];
			if (src[i + 2] == '=') {
				temp.e2 = 0x00;
				blank++;
			}
			else temp.e2 = DecodeMimeBase64[src[i + 2]];
			if (src[i + 3] == '=') {
				temp.e1 = 0x00;
				blank++;
			}
			else temp.e1 = DecodeMimeBase64[src[i + 3]];

			result[j] = temp.c3;
			result[j + 1] = temp.c2;
			result[j + 2] = temp.c1;
		}
	}
	else { // big endian(sun)
		for (i = 0; i < src_length; i = i + 4, j = j + 3) {
			temp.e4 = DecodeMimeBase64[src[i]];
			temp.e3 = DecodeMimeBase64[src[i + 1]];
			if (src[i + 2] == '=') {
				temp.e2 = 0x00;
				blank++;
			}
			else temp.e2 = DecodeMimeBase64[src[i + 2]];
			if (src[i + 3] == '=') {
				temp.e1 = 0x00;
				blank++;
			}
			else temp.e1 = DecodeMimeBase64[src[i + 3]];

			result[j] = temp.c1;
			result[j + 1] = temp.c2;
			result[j + 2] = temp.c3;
		}
	}
	*length = j - blank;
}


void CMFCApplication1Dlg::OnBnClickedButton1()
{
	// TODO: 여기에 컨트롤 알림 처리기 코드를 추가합니다.

	char str1[] = "테스트문자열입니다.ABCabc123,./";
	char str2[] = "7YWM7Iqk7Yq466y47J6Q7Je07J6F64uI64ukLkFCQ2FiYzEyMywuLw==";
	char *result;
	int src_size;
	struct timespec start, end;

	TCHAR filePath[] = L"D:\\project\\WindowsFormsApp1\\WindowsFormsApp1\\bin\\Debug\\test.png";
	TCHAR filePath2[] = L"D:\\project\\WindowsFormsApp1\\WindowsFormsApp1\\bin\\Debug\\test2.png";

	CFile oFile;
	if (oFile.Open(filePath, CFile::modeRead) == FALSE)
		return;

	long iFileSiz = oFile.GetLength();  // Getting is the content length
	BYTE* pData = new BYTE[iFileSiz];

	oFile.Read(pData, iFileSiz);       //  Reading file content

	pData[iFileSiz] = '\0';            //  Add last character as NULL

	oFile.Close();

	src_size = iFileSiz;
	size_t size = (4 * (src_size / 3)) + (src_size % 3 ? 4 : 0);
	result = (char *)malloc(size);

	base64e((char*)pData, result, src_size);

	//File Save
	CFile cfile;
	cfile.Open(_T("d:\\Write_File.dat"), CFile::modeCreate |
		CFile::modeReadWrite);

	cfile.Write(result, size);
	cfile.Flush();
	cfile.Close();

	free(result);


	//src_size = strlen(str2);
	//result = (char *)malloc(3 * (src_size / 4));
	//base64d(str2, result, &src_size);
	//free(result);
}