using System;

using ProjectName.Network.Cryptography;

using System.Text;



namespace ProjectName.Network.AuthPackets

{

    public class Authentication

    {

        byte[] Buffer;

        public string Username

        {

            get

            {

                string x = Encoding.Default.GetString(Buffer, 8, 32);

                return x.Replace("", "");

            }

        }

        public string Password

        {

            get

            {

                byte[] PasswordArray = Encoding.Default.GetBytes(Encoding.Default.GetString(Buffer, 84, 32).Replace("", ""));

                string x = ProjectName.Network.Cryptography.PasswordDecryption.Decrypt(PasswordArray);

                return x.Replace("", "");

            }

        }

        public string Server

        {

            get

            {

                string x = Encoding.Default.GetString(Buffer, 136, 16);

                return x.Replace("", "").Replace("0", "");

            }

        }

        public string MacAddress

        {

            get

            {

                string x = Encoding.Default.GetString(Buffer, 152, 16);

                return x.Replace("", "");

            }

        }

        public void Deserialize(byte[] buffer)

        {

            if (buffer.Length == 312)

            {

                ushort length = BitConverter.ToUInt16(buffer, 0);

                if (length == 312)

                {

                    ushort type = BitConverter.ToUInt16(buffer, 2);

                    if (type == 1636)

                    {

                        Buffer = buffer;

                    }

                }

            }

        }

    }

}  

 using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace ProjectName.Network.Cryptography

{

    using System.Text;

    public class PasswordDecryption

    {



       static byte[] Key = new byte[32] { 90, 45, 12, 17, 35, 66, 44, 1, 02, 41, 59, 32, 36, 2, 234, 1, 10, 2, 79, 73, 202, 31, 99, 75, 7, 34, 16, 35, 101, 226, 99, 152 };

        public static string Decrypt(byte[] data)

        {

            int length = Key.Length;

            for (int x = 0; x < data.Length; x++)

            {

                data[x] ^= Key[x % length];

                data[x] ^= Key[(x * 24 % 16) % length];

                data[x] ^= Key[(x * 48 % 32) % length];

            }

            return Encoding.Default.GetString(data);

        }

    }

}  

public static void AuthServer_OnClientReceive(byte[] buffer, int length, ClientWrapper arg3)

        {

            var player = arg3.Connector as Client.AuthClient;



            player.Cryptographer.Decrypt(buffer, length);

            player.Queue.Enqueue(buffer, length);

            while (player.Queue.CanDequeue())

            {

                byte[] packet = player.Queue.Dequeue();



                ushort len = BitConverter.ToUInt16(packet, 0);

                ushort id = BitConverter.ToUInt16(packet, 2);



                if (len == 312)

                {

                    player.Info = new ProjectName.Network.AuthPackets.Authentication();

                    player.Info.Deserialize(packet);

                    player.Account = new AccountTable(player.Info.Username);

                 

                    msvcrt.msvcrt.srand(player.PasswordSeed);



                    Forward Fw = new Forward();



                    if (player.Account.Password == player.Info.Password && player.Account.exists)

                        Fw.Type = Forward.ForwardType.Ready;

                    else

                        Fw.Type = Forward.ForwardType.InvalidInfo;

                    if (Fw.Type == Network.AuthPackets.Forward.ForwardType.Ready)

                    {

                        Fw.Identifier = player.Account.GenerateKey();

                        Kernel.AwaitingPool[Fw.Identifier] = player.Account;

                        Fw.IP = Program.GameIP;

                        Fw.Port = Program.GamePort;

                    }

                    player.Send(Fw);

                }

            }

        }