SerialKey Substitute

This is an idea I was having about something other than using the serial key function built into gunz.

Just some code I threw together in about 20 minutes or so.
Hope you all like it, feel free to comment on what you think.

Code:

---

//this took me about 20 minutes to make and 10 to test
//feel free to edit this any way you choose and beef up the algorithm
//Ryan M. Coble

#include <Windows.h> //include Windows API
#include <stdlib.h> //include standard library
#include <iostream> //if you don't know what this is may god help you. :P
using std::string; //allow us to use the string class

//function that uses an algorithm to create a key used to check if using right launcher
//simple algorithm found on google but you can use any that you see fit.
//credits to John Shao for algorithm.
string XOR(string value,string key)
{
    string val(value);

    short unsigned int klen=key.length();
    short unsigned int vlen=value.length();
    short unsigned int k = 0;
    short unsigned int v = 0;
   
    for(v; v<vlen; v++)
    {
        val[v] = value[v]^key[k];
        k = (++k<klen?k:0);
    }
   
    return val;
}

//will start the Gunz.exe with command line argument key
bool StartGunzWithParam(char* GunzName)
{
    char* Command = 0;
    string ParamKey = XOR("WINNAR", "FAILHARD");

    if(sprintf(Command, "%s %s", GunzName, ParamKey.c_str()) == 0)
    {
        if(system(Command) == 0)
        {
            return true;
        }
    }
    return false;
}

//function that checks if the key used matches algorith used
bool CheckParamKey()
{
    char* Path = 0;
    char* ParamKey = 0;
    char* CommandLine = GetCommandLineA();

    if(sscanf(CommandLine, "%s %s", Path, ParamKey) == 0)
    {
        if(ParamKey == XOR("WINNAR", "FAILHARD").c_str())
        {
            return true;
        }
    }
}

//entry point
extern "C" bool WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
{
    switch(fdwReason)
    {
    //case where DLL is attached to process
    case DLL_PROCESS_ATTACH:

        //if it matches let it go, if not exit.
        if(CheckParamKey())
        {

        }
        else
        {
            ExitProcess(0);
        }
        break;

    //case where DLL is attached to thread
    case DLL_THREAD_ATTACH:
        break;

    //case where DLL is detached from thread
    case DLL_THREAD_DETACH:
        break;

    //case where DLL is detached from process
    case DLL_PROCESS_DETACH:
        break;

    //should never happen
    default:
        break;
    }
   
    return true;
}

---

if(CheckParamKey())
{

}
else
{
ExitProcess(0);
}

there are easyer ways

if(!CheckParamKey())
{
ExitProcess(0);
}
but other then that looks nice i did something simular

Same difference, I mean it was written in less than a half hour and I was high as fuck...

high is the way i love weed yay

Don't we all? :P