天堂2文件校验算法的代码（转别人的） [复制链接]

DWORD L2FileCheck(char *file) >lg-j-pV  
{ >lg-j-pV  
DWORD Check=0xFFFFFFFF; >lg-j-pV  
HANDLE hFile; >lg-j-pV  
DWORD dwFileSize; >lg-j-pV  
DWORD dwNumberOfBytesReadWritten; >lg-j-pV  
HANDLE hMemory; >lg-j-pV  
LPVOID pMemory; >lg-j-pV  
char filename[MAX_PATH]; >lg-j-pV  
BYTE *temp; >lg-j-pV  
BYTE temp1,temp2; >lg-j-pV  
int Max=0,Min=0; >lg-j-pV  
temp =(unsigned char *)malloc(0x1000); >lg-j-pV  
hFile=CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, 0); >lg-j-pV  
if(hFile != INVALID_HANDLE_value) >lg-j-pV  
{ >lg-j-pV  
dwFileSize=GetFileSize(hFile, NULL); >lg-j-pV  
hMemory=GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT, dwFileSize); >lg-j-pV  
pMemory=GlobalLock(hMemory); >lg-j-pV  
Max = (dwFileSize-0x14)/0x1000; >lg-j-pV  
Min = (dwFileSize-0x14)%0x1000; >lg-j-pV  
for(int j=0;j<Max;j++) >lg-j-pV  
{ >lg-j-pV  
ReadFile(hFile,pMemory,0x1000,&dwNumberOfBytesReadWritten,NULL); >lg-j-pV  
memcpy(temp,pMemory,0x1000); >lg-j-pV  
for(int k=0;k<0x1000;k++) >lg-j-pV  
{ >lg-j-pV  
temp1=*(BYTE *)(temp+k); >lg-j-pV  
temp2=(Check&0x000000FF) ^ temp1; >lg-j-pV  
Check=(Check >> 8) ^ FileCheck[temp2]; >lg-j-pV  
} >lg-j-pV  
} >lg-j-pV  
ReadFile(hFile,pMemory,Min,&dwNumberOfBytesReadWritten,NULL); >lg-j-pV  
memcpy(temp,pMemory,0x1000); >lg-j-pV  
for(j=0;j<Min;j++) >lg-j-pV  
{ >lg-j-pV  
BYTE temp1,temp2; >lg-j-pV  
temp1=*(BYTE *)(temp+j); >lg-j-pV  
temp2=(Check&0x000000FF) ^ temp1; >lg-j-pV  
Check=(Check >> 8) ^ FileCheck[temp2]; >lg-j-pV  
} >lg-j-pV  
_asm { >lg-j-pV  
push ecx >lg-j-pV  
mov ecx,Check >lg-j-pV  
not ecx >lg-j-pV  
mov Check,ecx >lg-j-pV  
pop ecx >lg-j-pV  
} >lg-j-pV  
CloseHandle(hFile); >lg-j-pV  
GlobalUnlock(pMemory); >lg-j-pV  
GlobalFree(hMemory); >lg-j-pV  
free(temp); >lg-j-pV  
return Check; >lg-j-pV  
} >lg-j-pV  
else >lg-j-pV  
{ >lg-j-pV  
return 0; >lg-j-pV  
} >lg-j-pV  
} >lg-j-pV  

看不懂

哎，郁闷，我还以为是EXP的~