DayZ Key Changer

using Microsoft.Win32;
using System;
using System.Threading;

namespace DayZ_Key_Changer
{
    internal class Program
    {
        private static string keys = "";
        private static void Main(string[] args)
        {
            Program.title();
            Thread.Sleep(500);
            Program.CurrentKey(1);
            Program.ChangeKey();
            Program.CurrentKey(2);
        }

        private static void title()
        {
            Console.Write(@"
DDDDDDDDDDDDD                                               ZZZZZZZZZZZZZZZZZZZ
D::::::::::::DDD                                            Z:::::::::::::::::Z
D:::::::::::::::DD                                          Z:::::::::::::::::Z
DDD:::::DDDDD:::::D                                         Z:::ZZZZZZZZ:::::Z 
  D:::::D    D:::::D  aaaaaaaaaaaaayyyyyyy           yyyyyyyZZZZZ     Z:::::Z  
  D:::::D     D:::::D a::::::::::::ay:::::y         y:::::y         Z:::::Z    
  D:::::D     D:::::D aaaaaaaaa:::::ay:::::y       y:::::y         Z:::::Z     
  D:::::D     D:::::D          a::::a y:::::y     y:::::y         Z:::::Z      
  D:::::D     D:::::D   aaaaaaa:::::a  y:::::y   y:::::y         Z:::::Z       
  D:::::D     D:::::D aa::::::::::::a   y:::::y y:::::y         Z:::::Z        
  D:::::D     D:::::Da::::aaaa::::::a    y:::::y:::::y         Z:::::Z         
  D:::::D    D:::::Da::::a    a:::::a     y:::::::::y       ZZZ:::::Z     ZZZZZ
DDD:::::DDDDD:::::D a::::a    a:::::a      y:::::::y        Z::::::ZZZZZZZZ:::Z
D:::::::::::::::DD  a:::::aaaa::::::a       y:::::y         Z:::::::::::::::::Z
D::::::::::::DDD     a::::::::::aa:::a     y:::::y          Z:::::::::::::::::Z
DDDDDDDDDDDDD         aaaaaaaaaa  aaaa    y:::::y           ZZZZZZZZZZZZZZZZZZZ
                                         y:::::y                               
                                        y:::::y                                
                                       y:::::y                                 
                                      y:::::y                                  
                                     yyyyyyy                                   
");

        }

        private static void CurrentKey(int times)
        {
            RegistryKey registryKey = Registry.LocalMachine.OpenSubKey("Software\\Bohemia Interactive Studio\\ArmA 2 OA", true);
            if (times == 1)
            {
                if (registryKey == null)
                {
                    Program.keys = "Arma2:OA is not installed or failed to grab key.\n";
                }
                else
                {
                    byte[] value = (byte[])registryKey.GetValue("KEY");
                    Program.keys = "Your current key is: " + Environment.NewLine + BitConverter.ToString(value) + "\n";
                }
            }
            else if (times == 2)
            {
                if (registryKey == null)
                {
                    Program.keys = "Arma2:OA is not installed or failed to grab key.\n";
                }
                else
                {
                    byte[] value = (byte[])registryKey.GetValue("KEY");
                    Console.WriteLine("\n\n\n\n\n\nYour new CD-key set for Arma2:AO is: ");
                    Console.WriteLine(BitConverter.ToString(value));
                    Console.WriteLine("Press enter to end the program.");
                    Console.ReadLine();
                }
            }
        }
        private static void ChangeKey()
        {
            RegistryKey registryKey = Registry.LocalMachine.OpenSubKey("Software\\Bohemia Interactive Studio\\ArmA 2 OA", true);
            if (registryKey != null)
            {
                Console.WriteLine(Program.keys);
                Console.WriteLine("Enter a new key \n(Tip: right click on title bar of this window -> Edit -> Paste):");
                string text = Console.ReadLine();
                text += "-";
                text = text.ToLower();
                if (string.IsNullOrEmpty(text))
                {
                    Console.WriteLine("Empty answer! Program failed.");
                }
                else
                {
                    byte[] value = new byte[15];
                    string[] array = text.Split(new char[]
					{
						'-'
					});
                    int upperBound = array.GetUpperBound(0);
                    byte[] array2 = new byte[upperBound];
                    for (int i = 0; i < upperBound; i++)
                    {
                        array2[i] = Convert.ToByte(array[i], 16);
                    }
                    value = array2;
                    registryKey.SetValue("KEY", value);
                }
            }
        }
    }
}