void calculateCrc(char* hashString, DWORD& crc32)
{
    crc32 = 0xFFFFFFFF;
    ifstream hashFile(hashString, ios::binary);

    hashFile.peek();

    while(!hashFile.eof())
    {
        crc32 = (crc32 >> 8) ^ crc32Table[(crc32 &0xFF) ^ hashFile.get()];
        hashFile.peek();
    }

    hashFile.close()

    crc32 = ~crc32;
}