[C++] Read Windows CD-Key

slacker · Posted: 06-07-2011, 19:25:08 | Translate post to: ... (Click for more languages)

Works on 32/64bit
USAGE:

Code:

int main() {
printf("Blah, blah\nYour cd-key is: ");
GetWindowsKey();
}

Teh Code

Code:

void GetWindowsKey(BOOL is64 = false)
{
if (is64) {
#define WIN64KEY
}
char* wsResult; //Return a Window Product Key
HKEY hRegistryKey; //Registry Handler
BYTE *DigitalProductID = 0; //Digital Product Key Value
DWORD DataLength; //Digital Product Key Length
BYTE ProductKeyExtract[15]; //Extract Key
char sCDKey[30]; //Temp, adding a Window Product Key
int ByteCounter; //Counter
int k; //Convert
int nCur; //XOR calculate
bool bOk = false;

const char *KeyChars[] = {
"B","C","D","F","G","H","J","K","M",
"P","Q","R","T","V","W","X","Y",
"2","3","4","6","7","8","9",NULL
};

const char NT_CURRENT[] = "SOFTWARE\\MICROSOFT\\Windows NT\\CurrentVersion";
#ifdef WIN64KEY
#ifdef KEY_WOW64_64KEY
#else
#define KEY_WOW64_64KEY 0x0100
#endif
if( RegOpenKeyEx(HKEY_LOCAL_MACHINE, NT_CURRENT,
REG_OPTION_NON_VOLATILE, KEY_QUERY_VALUE | KEY_WOW64_64KEY,
&hRegistryKey) == ERROR_SUCCESS )
#else
if( RegOpenKeyEx(HKEY_LOCAL_MACHINE, NT_CURRENT,
REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS,
&hRegistryKey) == ERROR_SUCCESS )
#endif
{
DataLength = 164;
//Allocate Memory
DigitalProductID = new byte[DataLength];

//Memory Initialization
memset(DigitalProductID, 0, DataLength);

//Digital Product
if( RegQueryValueEx(hRegistryKey, "DigitalProductId",
NULL, NULL, DigitalProductID, &DataLength) == ERROR_SUCCESS )
{
//reading a value start position 52, by 66
memcpy(ProductKeyExtract, DigitalProductID+52, 15);
bOk = true;
}

//Release Memory
if(DigitalProductID) delete []DigitalProductID;

//Close Registry
RegCloseKey(hRegistryKey);
}

if( !bOk )
printf(wsResult);

//Start Converting job, Next Step
memset(sCDKey, 0, sizeof(sCDKey));

for(ByteCounter=24; ByteCounter >= 0; --ByteCounter)
{
nCur = 0;

for(k=14; k >= 0; --k)
{
nCur = (nCur * 256) ^ ProductKeyExtract[k];

ProductKeyExtract[k] = nCur / 24;
nCur %= 24;
}

strcat(sCDKey, KeyChars[nCur]);

//Insert "-"
if( !(ByteCounter % 5) && ByteCounter )
strcat(sCDKey, "-");
}

_strrev(sCDKey);
wsResult = sCDKey;
char *pch;
pch = strstr(wsResult, "-");
if (pch != NULL) {
printf(wsResult);
} else {
GetWindowsKey(true);
}
#ifdef WIN64KEY
#undef WIN64KEY
#endif
}

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