{

unsigned int uiCRC32 = 0xFFFFFFFF;

unsigned char* pszData = (unsigned char*)pData;

for (size_t i = 0; i < iLen; ++i)

{

uiCRC32 = ((uiCRC32 >> 8) & 0x00FFFFFF) ^ uiCRC32_Table[(uiCRC32 ^ (unsigned int)*pszData++) & 0xFF];

}

return (uiCRC32 ^ 0xFFFFFFFF);