base64 encode length

base64 인코딩 이후 길이

 

/******************************************************************************/
size_t CalculateBase64EncodeLength(const char *b64input)
{

    size_t nLen = 0;

    nLen = strlen(b64input);

    return ( ( nLen + 2 - ((nLen+2) % 3) ) * 4/3 );
}
/******************************************************************************/