[Mr. Anderson]

All credits to decompiler for making the original encryption, I just ported it to C#:
(There might be 1 or two errors I havnt found yet in the C# version. If so please post it.

Code

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
public class XTea
{
    //Leave a thanks....

    //- decompiler
  //ported by mr. anderson

    private static uint[] f_key;
    public XTea(string password)
    {
        f_key = FormatKey(password);
    }

    public static string Encrypt(string input)
    {
        if (input.Length == 0) {
            throw new ArgumentException("Invalid input length!");
        }

        if (input.Length % 2 != 0) {
            input += ControlChars.NullChar;
        }

        byte[] dataBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(input);

        string cipher = string.Empty;
        uint[] tempData = new uint[2];
        for (int i = 0; i <= dataBytes.Length - 1; i += 2) {
            tempData[0] = dataBytes[i];
            tempData[1] = dataBytes[i + 1];
            code(tempData, f_key);
            cipher += ConvertUIntToString(tempData[0]) + ConvertUIntToString(tempData[1]);
        }

        return cipher;
    }

    public static string Decrypt(string Data)
    {
        int x = 0;
        uint[] tempData = new uint[2];
        byte[] dataBytes = new byte[(Data.Length / 8) * 2];
        for (int i = 0; i <= Data.Length - 1; i += 8) {
            tempData[0] = ConvertStringToUInt(Data.Substring(i, 4));
            tempData[1] = ConvertStringToUInt(Data.Substring(i + 4, 4));
            decode(tempData, f_key);
            dataBytes[x] = Convert.ToByte(tempData[0]);
            x += 1;
            dataBytes[x] = Convert.ToByte(tempData[1]);
            x += 1;
        }
        string decipheredString = System.Text.ASCIIEncoding.ASCII.GetString(dataBytes, 0, dataBytes.Length);
        if (decipheredString[decipheredString.Length - 1] == ControlChars.NullChar) {
            decipheredString = decipheredString.Substring(0, decipheredString.Length - 1);
        }
        return decipheredString;
    }

    private static uint[] FormatKey(string Key)
    {
        if (Key.Length <= 5) {
            throw new ArgumentException("Key must be between 6 and 16 characters in length");
        }

        Key = Key.PadRight(16, ' ').Substring(0, 16);

        uint[] formattedKey = new uint[5];

        int j = 0;
        for (int i = 0; i <= Key.Length - 1; i += 4) {
            formattedKey[j] = ConvertStringToUInt(Key.Substring(i, 4));
            j += 1;
        }
        return formattedKey;
    }

    private static void code(uint[] v, uint[] k)
    {
        uint y = v[0];
        uint z = v[1];
        uint sum = 0;
        uint delta = 0x9e3779b9u;

        for (i = 0; i <= 31; i++) {
            y += (z << 4 ^ z >> 5) + z ^ sum + k[sum & 3];
            sum += delta;
            z += (y << 4 ^ y >> 5) + y ^ sum + k[sum >> 11 & 3];
        }

        v[0] = y;
        v[1] = z;
    }

    private static void decode(uint[] v, uint[] k)
    {
        uint y = v[0];
        uint z = v[1];
        uint sum = 0xc6ef3720u;
        uint delta = 0x9e3779b9u;

        for (i = 0; i <= 31; i++) {
            z -= (y << 4 ^ y >> 5) + y ^ sum + k[sum >> 11 & 3];
            sum -= delta;
            y -= (z << 4 ^ z >> 5) + z ^ sum + k[sum & 3];
        }

        v[0] = y;
        v[1] = z;
    }

    private static System.UInt32 ConvertStringToUInt(string Input)
    {
        UInt32 output = default(UInt32);
        output = Convert.ToUInt32(FileSystem.Input(0));
        output += (Convert.ToUInt32(FileSystem.Input(1)) << 8);
        output += (Convert.ToUInt32(FileSystem.Input(2)) << 16);
        output += (Convert.ToUInt32(FileSystem.Input(3)) << 24);
        return output;
    }
    private static string ConvertUIntToString(System.UInt32 Input)
    {
        System.Text.StringBuilder output = new System.Text.StringBuilder();
        output.Append(Convert.ToChar(Input & 0xff));
        output.Append(Convert.ToChar((Input >> 8) & 0xff));
        output.Append(Convert.ToChar((Input >> 16) & 0xff));
        output.Append(Convert.ToChar((Input >> 24) & 0xff));
        return output.ToString();
    }

}

Example:
[img]http://ploader.net/files/743101b5744d2c56f961988109d931e8.gif[/img]

[Grieve™]

looks nice! i will try later. good job converting it to c#

[TheHacker221]

Bad conversion to C#. I would recommend this to ANYONE winning to convert byte arrays, strings, ints and stuff to use this. I will be using this aswell I have fixed the code up for C# as thats my primary programming language

Code

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Text;

public class XTea
{
    private static uint[] f_key;
    public XTea(string password)
    {
  f_key = FormatKey(password);
    }

    public static string Encrypt(string input)
    {
  if (input.Length == 0)
  {
    throw new ArgumentException("Invalid input length!");
  }

  if (input.Length % 2 != 0)
  {
    input += "\0";
  }

  byte[] dataBytes = ASCIIEncoding.ASCII.GetBytes(input);

  string cipher = string.Empty;
  uint[] tempData = new uint[2];
  for (int i = 0; i <= dataBytes.Length - 1; i += 2)
  {
    tempData[0] = dataBytes[i];
    tempData[1] = dataBytes[i + 1];
    code(tempData, f_key);
    cipher += ConvertUIntToString(tempData[0]) + ConvertUIntToString(tempData[1]);
  }

  return cipher;
    }

    public static string Decrypt(string Data)
    {
  int x = 0;
  uint[] tempData = new uint[2];
  byte[] dataBytes = new byte[(Data.Length / 8) * 2];
  for (int i = 0; i <= Data.Length - 1; i += 8)
  {
    tempData[0] = ConvertStringToUInt(Data.Substring(i, 4));
    tempData[1] = ConvertStringToUInt(Data.Substring(i + 4, 4));
    decode(tempData, f_key);
    dataBytes[x] = Convert.ToByte(tempData[0]);
    x += 1;
    dataBytes[x] = Convert.ToByte(tempData[1]);
    x += 1;
  }
  string decipheredString = System.Text.ASCIIEncoding.ASCII.GetString(dataBytes, 0, dataBytes.Length);
  if (decipheredString[decipheredString.Length - 1] == Convert.ToChar("\0"))
  {
    decipheredString = decipheredString.Substring(0, decipheredString.Length - 1);
  }
  return decipheredString;
    }

    private static uint[] FormatKey(string Key)
    {
  if (Key.Length <= 5)
  {
    throw new ArgumentException("Key must be between 6 and 16 characters in length");
  }

  Key = Key.PadRight(16, ' ').Substring(0, 16);

  uint[] formattedKey = new uint[5];

  int j = 0;
  for (int i = 0; i <= Key.Length - 1; i += 4)
  {
    formattedKey[j] = ConvertStringToUInt(Key.Substring(i, 4));
    j += 1;
  }
  return formattedKey;
    }

    private static void code(uint[] v, uint[] k)
    {
  uint y = v[0];
  uint z = v[1];
  uint sum = 0;
  uint delta = 0x9e3779b9u;

  for (int i = 0; i <= 31; i++)
  {
    y += (z << 4 ^ z >> 5) + z ^ sum + k[sum & 3];
    sum += delta;
    z += (y << 4 ^ y >> 5) + y ^ sum + k[sum >> 11 & 3];
  }

  v[0] = y;
  v[1] = z;
    }

    private static void decode(uint[] v, uint[] k)
    {
  uint y = v[0];
  uint z = v[1];
  uint sum = 0xc6ef3720u;
  uint delta = 0x9e3779b9u;

  for (int i = 0; i <= 31; i++)
  {
    z -= (y << 4 ^ y >> 5) + y ^ sum + k[sum >> 11 & 3];
    sum -= delta;
    y -= (z << 4 ^ z >> 5) + z ^ sum + k[sum & 3];
  }

  v[0] = y;
  v[1] = z;
    }

    private static UInt32 ConvertStringToUInt(string Input)
    {
  UInt32 output = default(UInt32);
  output = Input[0];
  output += (uint)(Input[1] << 8);
  output += (uint)(Input[2] << 16);
  output += (uint)(Input[3] << 24);

  return output;
    }
    private static string ConvertUIntToString(UInt32 Input)
    {
  StringBuilder output = new StringBuilder();
  output.Append((char)Input & 0xff);
  output.Append((char)(Input >> 8) & 0xff);
  output.Append((char)(Input >> 16) & 0xff);
  output.Append((char)(Input >> 24) & 0xff);
  return output.ToString();
    }

}

[DarkSeven46]

Very nice, Will add to my brain.