void GetKey()
{
TCHAR szKey[32];
memset(szKey, 0, sizeof(szKey));
LPCTSTR lpCharSet = _T("BCDFGHJKMPQRTVWXY2346789");
LPCTSTR lpKey = _T("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
LPCTSTR lpValue = _T("DigitalProductId");
HKEY hKey;
LONG hr = RegOpenKeyEx(HKEY_LOCAL_MACHINE, lpKey, 0, KEY_READ, &hKey);
if (hr == ERROR_SUCCESS)
{
// Определение размера данных "DigitalProductId"
DWORD cbData;
RegQueryValueEx(hKey, lpValue, 0, 0, 0, &cbData);
PBYTE pData = (PBYTE)LocalAlloc(LPTR, cbData);
if (pData)
{
// Чтение данных "DigitalProductId"
hr = RegQueryValueEx(hKey, lpValue, 0, 0, pData, &cbData);
if (hr == ERROR_SUCCESS)
{
PBYTE pCryptedKey = &pData[52];
int nCount = 24;
// расшифровка ключа
__asm
{
push edi;
push esi;
push ecx;
Loop_1:
xor ecx, ecx;
mov edi, 0Eh;
mov esi, pCryptedKey;
Loop_2:
xor edx, edx;
mov eax, 2AAAAAABh;
mov dl, byte ptr [esi+edi];
shl ecx, 8;
add ecx, edx;
imul ecx;
sar edx, 2;
mov eax, edx;
shr eax, 1Fh;
add edx, eax;
mov eax, ecx;
mov byte ptr [esi+edi], dl;
mov ecx, 18h;
cdq;
idiv ecx;
dec edi;
mov ecx, edx;
jns Loop_2;
mov eax, lpCharSet;
lea esi, szKey;
#ifdef _UNICODE
mov dx, word ptr [eax][2*ecx];
mov ecx, nCount;
mov word ptr [esi][2*ecx], dx;
#else
mov dl, byte ptr [eax][ecx];
mov ecx, nCount;
mov byte ptr [esi][ecx], dl;
#endif
dec ecx;
mov nCount, ecx;
jns Loop_1;
pop ecx;
pop esi;
pop edi;
}
TRACE(_T("Key is: %.5s-%.5s-%.5s-%.5s-%.5s\n\n"),
&szKey[0],
&szKey[5],
&szKey[10],
&szKey[15],
&szKey[20]);
}
LocalFree(pData);
}
RegCloseKey(hKey);
}
}
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