Base64 from file

What's the problem with this code?

the purpose is to convert binary file into a Base64 string

I seem to have problem in the following line
BYTE const* pbBinary = &bytes[0];
int size = sizeof(pbBinary);

=================
typedef unsigned char BYTE;
std::ifstream file1("c:/test2.png");

// read from test2.png into BYTE array
std::vector<BYTEbytes(
(std::istreambuf_iterator<char>(file1))
, (std::istreambuf_iterator<char>())
);
if(bytes.empty())
; // no bytes have been read

BYTE const* pbBinary = &bytes[0];
int size = sizeof(pbBinary);

unsigned long ulEncLen = 0;
char *pEncOut = NULL;

BOOL fRet = ::CryptBinaryToString( pbBinary, size,
CRYPT_STRING_BASE64, pEncOut, &ulEncLen );
====================
BOOL WINAPI CryptBinaryToString(
__in const BYTE *pbBinary,
__in DWORD cbBinary,
__in DWORD dwFlags,
__out_opt LPTSTR pszString,
__inout DWORD *pcchString
);

re: Base64 from file

Chunekit Pong wrote:It doesn't compile
What's Base64 string?
Most likely you will get 4 (depends on the platform you use)
Is this working?
I would do this:
const int size = bytes.size();

re: Base64 from file

On Thu, 20 Nov 2008 10:13:34 +0100, anon <anon@no.invalidwrote:
the full C++ file is like this - should compile
http://www.oniva.com/upload/1356/c3.cpp

re: Base64 from file

On Thu, 20 Nov 2008 10:13:34 +0100, anon <anon@no.invalidwrote:
I used the bytes.size();

but i found that - pEncOut - is not holding any string after calling
CryptBinaryToString function, when I debug it says bad Prt something.

After calling the function CryptBinaryToString - pEncOut shoul have
the Base64 string generated.

===================
char *pEncOut = NULL;

BOOL fRet = ::CryptBinaryToString( pbBinary, size,
CRYPT_STRING_BASE64, pEncOut, &ulEncLen );

re: Base64 from file

Chunekit Pong wrote:To open a file for binary read, you need to create ifstream object like
this:
std::ifstream file1( "c:/test2.png",
std::ios_base::binary |
std::ios_base::in );

Are you sure CryptBinaryToString works fine?

re: Base64 from file

Chunekit Pong schrieb:Of course it doesn't work. pEncOut is set to NULL. It won't magically
change to something else.

You would have to set pEncOut to some buffer and maybe ulEncLen to the
size of this buffer. Check out the documentation of this
CryptBinaryToString function.

--
Thomas