Basic Encryption Mode Demos

MyLiveChat provides an encryption algorithm for Basic Encrytion Mode. If you are using C#, ASP, PHP or Java, you can integrate MyLiveChat to your web application with membership by basic encryption algorithm.

C# demo 
int EncryptLoopCount = 4;

public string BasicEncrypt(string data, string encryptkey)
{
  if (string.IsNullOrEmpty(data))
  throw (new ArgumentNullException("data"));
  if (string.IsNullOrEmpty(encryptkey))
  throw (new ArgumentNullException("encryptkey"));
  int[] vals = MakeArray(data, true);
  int[] keys = MakeArray(encryptkey, false);
  for (int t = 0; t < EncryptLoopCount; t++)
  {
  for (int i = 0; i < vals.Length; i++)
  {
  int v = vals[i];
  int im = (v + i) % 5;
  for (int x = 0; x < vals.Length; x++)
  {
  if (x == i)
  continue;
  if (x % 5 != im)
  continue;
  for (int y = 0; y < keys.Length; y++)
  {
  int k = keys[y];
  if (k == 0)
  continue;
  vals[x] += v % k;
  }
  }
  }
  }
  return BasicFormat(vals);
}

public string BasicFormat(int[] vals)
{
  StringBuilder sb = new StringBuilder();
  foreach (int i in vals)
  {
  if (sb.Length > 0)
  sb.Append("-");
  sb.Append(i);
  }
  return sb.ToString();
}

public int[] MakeArray(string str, bool random)
{
  int len = (int)Math.Pow(2, Math.Floor(Math.Log(str.Length, 2)) + 1) + 8;
  if (len < 32) len = 32;
  int[] arr = new int[len];
  if (random)
  {
  Random r = new Random();
  for (int i = 0; i < arr.Length; i++)
  arr[i] = str[r.Next() % str.Length];
  int start = 1 + r.Next() % (len - str.Length - 2);
  for (int i = 0; i < str.Length; i++)
  arr[start + i] = str[i];
  arr[start - 1] = 0;
  arr[start + str.Length] = 0;
  }
  else
  {
  for (int i = 0; i < arr.Length; i++)
  arr[i] = str[i % str.Length];
  }
  return arr;
}
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Asp demo 
Public Function MakeArray(str, random)
  Dim arrlen
  arrlen = 2^(Fix(log(2)/log(Len(str))) + 1) + 8
  If arrlen < 32 Then
  arrlen = 32
  End If
  ReDim arr(arrlen-1)
  If random=true Then
  Randomize Timer
  For i = 0 to arrlen-1
  arr(i) = Asc(Mid(str,Int((9999 - 1000 + 1) * Rnd + 1000) mod Len(str) + 1,1))
  Next
  start = 1 + Int((9999 - 1000 + 1) * Rnd + 1000) mod (arrlen - Len(str) - 2)
  For i = 1 to Len(str)
  arr(start + i) = Asc(Mid(str,i,1))
  Next
  arr(start - 1) = 0
  arr(start + Len(str)) = 0
  Else
  For i = 0 to arrlen-1
  arr(i) = Asc(Mid(str,i mod Len(str) + 1,1))
  Next
  End If
  MakeArray=arr
End Function

Public Function BasicFormat(vals)
  Dim sb
  sb = ""
  For i=0 to UBound(vals)
  If Len(sb) > 0 Then
  sb = sb & "-"
  End if
  sb = sb & (vals(i)&"")
  Next
  BasicFormat=sb
End Function

Public Function BasicEncrypt(data, encryptkey)
  If data=null Or Len(Trim(data))=0 Then
  Err.Raise6
  End If
  If encryptkey=null Or Len(Trim(encryptkey))=0 Then
  Err.Raise6
  End If
  vals = MakeArray(data, true)
  keys = MakeArray(encryptkey, false)
  EncryptLoopCount = 4
  for t = 0 to EncryptLoopCount-1
  for i = 0 to UBound(vals)
  v = vals(i)
  im = (v + i) mod 5
  for x = 0 to UBound(vals)
  if x <> i And x mod 5 = im Then
  for y = 0 to UBound(keys)
  k = keys(y)
  if k <> 0 Then
  vals(x) = vals(x) + v mod k
  End if
  Next
  End If
  Next
  Next
  Next
  BasicEncrypt=BasicFormat(vals)
End Function
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Php demo 
function BasicEncrypt($data, $encryptkey)
{
  $EncryptLoopCount = 4;
  $vals = MakeArray($data, true);
  $keys = MakeArray($encryptkey, false);
  $len = sizeof($vals);
  $len2 = sizeof($keys);
  for ($t = 0; $t < $EncryptLoopCount; $t++)
  {
  for ($i = 0; $i < $len; $i++)
  {
  $v = $vals[$i];
  $im = ($v + $i) % 5;
  for ($x = 0; $x < $len; $x++)
  {
  if ($x == $i)
  continue;
  if ($x % 5 != $im)
  continue;
  for ($y = 0; $y <$len2; $y++)
  {
  $k = $keys[$y];
  if ($k == 0)
  continue;
  $vals[$x] += $v % $k;
  }
  }
  }
  }
  return implode('-', $vals);
}

function MakeArray($str, $random)
{
  $len = pow(2, floor(log(strlen($str), 2)) + 1) + 8;
  if ($len < 32) $len = 32;
  $arr = Array();
  $strarr = str_split($str);
  if ($random==true)
  {
  for ($i = 0; $i < $len; $i++)
  $arr[] = ord($strarr[rand() % strlen($str)]);
  $start = 1 + rand() % ($len - strlen($str) - 2);
  for ($i = 0; $i < strlen($str); $i++)
  $arr[$start + $i] = ord($strarr[$i]);
  $arr[$start - 1] = 0;
  $arr[$start + strlen($str)] = 0;
  }
  else
  {
  for ($i = 0; $i < $len; $i++)
  $arr[] = ord($strarr[$i % strlen($str)]);
  }
  return $arr;
}
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Java demo 
int EncryptLoopCount = 4;
public int[] MakeArray(String str, Boolean random)
{
  int len = (int)Math.pow(2, Math.floor(Math.log(2)/Math.log(str.length())) + 1) + 8;
  if (len < 32) len = 32;
  int[] arr = new int[len];
  if (random)
  {
  Random r = new Random();
  for (int i = 0; i < arr.length; i++)
  arr[i] = str.charAt(r.nextInt(9999) % str.length());
  int start = 1 + r.nextInt(9999) % (len - str.length() - 2);
  for (int i = 0; i < str.length(); i++)
  arr[start + i] = str.charAt(i);
  arr[start - 1] = 0;
  arr[start + str.length()] = 0;
  }
  else
  {
  for (int i = 0; i < arr.length; i++)
  arr[i] = str.charAt(i % str.length());
  }
  return arr;
}

public String BasicFormat(int[] vals)
{
  StringBuilder sb = new StringBuilder();
  for (int i=0;i   {
  if (sb.length() > 0)
  sb.append("-");
  sb.append(vals[i]);
  }
  return sb.toString();
}

public String BasicEncrypt(String data, String encryptkey)
{
  if (data==null || data.trim() == "")
  throw new IllegalArgumentException("data");
  if (encryptkey == null || encryptkey == "")
  throw new IllegalArgumentException("encryptkey");
  int[] vals = MakeArray(data, true);
  int[] keys = MakeArray(encryptkey, false);
  for (int t = 0; t < EncryptLoopCount; t++)
  {
  for (int i = 0; i < vals.length; i++)
  {
  int v = vals[i];
  int im = (v + i) % 5;
  for (int x = 0; x < vals.length; x++)
  {
  if (x == i)
  continue;
  if (x % 5 != im)
  continue;
  for (int y = 0; y < keys.length; y++)
  {
  int k = keys[y];
  if (k == 0)
  continue;
  vals[x] += v % k;
  }
  }
  }
  }
  return BasicFormat(vals);
}
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