zCryptDrv_xor_intermediate Class Reference
[Zigmoyd Encryption System.]

XOR adapter (Intermediate) for Zigmoyd Encryption System. More...

Inheritance diagram for zCryptDrv_xor_intermediate:

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Collaboration diagram for zCryptDrv_xor_intermediate:

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Public Member Functions
	zCryptDrv_xor_intermediate ()
	__construct ()
	blockise ($str)
	Blockise a String into Block Size.
	dblockise ($str)
	Deblockise a String.
	psubstr ($str, $start, $len)
	Unknown Operation.
	get_block ($str, $i)
	Get Specified Block of a string supplied.
	x_enc ($string, $key)
	Unknown Operation.
	x_dcd ($string, $key)
	Unknown Operation.
	enc ($str, $key)
	encodes
	dcd ($str, $key)
	decodes
	encode ($str, $key, $mode=ENC_BIN)
	Encodes using enc().
	decode ($str, $key, $mode=ENC_BIN)
	Decodes using dcd().
	dec_decode ($salted)
	Decodes a Numarically encoded string.
	dec_encode ($salt)
	Encodes a string into 0-9 Numbers and returns that numarical string.
Data Fields
	$val

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Detailed Description

XOR adapter (Intermediate) for Zigmoyd Encryption System.

can be used when mcrypt is not available

Definition at line 30 of file xor.php.

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Constructor & Destructor Documentation

zCryptDrv_xor_intermediate::__construct( ) 

Reimplemented from zCore.

Reimplemented in zCryptDrv_xor.

Definition at line 36 of file xor.php.

Referenced by zCryptDrv_xor_intermediate().

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                        {
    parent::__construct();
    if(!defined('BLOCK_SIZE')){define('BLOCK_SIZE', 4);}
    if(!defined('BLOCK_JUNK')){define('BLOCK_JUNK', 5);}
    if(!defined('ENC_BIN')){define('ENC_BIN', true);}
    if(!defined('ENC_DEC')){define('ENC_DEC', false);}
    $this->val = array(' ', '+', '_', '*', '&', ':', '-', '@', '=', '%');
  }

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Member Function Documentation

zCryptDrv_xor_intermediate::zCryptDrv_xor_intermediate( ) 

Definition at line 33 of file xor.php.

References __construct().

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                                       {
    $this->__construct();
  }

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zCryptDrv_xor_intermediate::blockise( string $str ) 

Blockise a String into Block Size.

If a string is less than Block size Fills it with Junks

Parameters:

$str

Returns:

string

Definition at line 51 of file xor.php.

Referenced by enc().

Show Source

                         {
    if(strlen($str) >= BLOCK_SIZE*2){return $str;}
    while(strlen($str) < BLOCK_SIZE*2){
      $str .= chr(BLOCK_JUNK);
    }
    return $str;
  }

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zCryptDrv_xor_intermediate::dblockise( string $str ) 

Deblockise a String.

reverse operatin of zCryptDrv_xor_intermediate::blockise()

Parameters:

$str

Returns:

string

Definition at line 65 of file xor.php.

Referenced by dcd().

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                          {
    for($i=strlen($str)-1;$i>=strlen($str)-1-8;$i--){
      if(isset($str[$i]) && $str[$i] != chr(BLOCK_JUNK)){break;}
      $str = substr($str, 0, $i);
    }
    return $str;
  }

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zCryptDrv_xor_intermediate::psubstr( string $str, int $start, int $len )

Unknown Operation.

Parameters:

	$str
	$start
	$len

Returns:

string

Definition at line 80 of file xor.php.

Referenced by dcd(), enc(), and get_block().

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                                      {
    if($start < 0){$tmp = "";return $tmp;};
    return substr($str, $start, $len);
  }

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zCryptDrv_xor_intermediate::get_block( string $str, int $i )

Get Specified Block of a string supplied.

Parameters:

	$str
	$i

Returns:

string

Definition at line 91 of file xor.php.

References psubstr().

Referenced by dcd(), and enc().

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{return $this->psubstr($str, $i, BLOCK_SIZE);}

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zCryptDrv_xor_intermediate::x_enc( string $string, string $key )

Unknown Operation.

Parameters:

	$string
	$key

Returns:

string

Definition at line 99 of file xor.php.

Referenced by enc(), and x_dcd().

Show Source

                               {
    for($i=0; $i<=strlen($string)-1; $i++){
      for($j=0; $j<=strlen($key)-1; $j++){
        $string[$i] = $string[$i]^$key[$j];
      }
      if($i != 0 && $i != strlen($string)-1){
        $string[$i] = $string[$i]^$string[$i-1]^$string[$i+1];
      }
    }
   return $string;
  }

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zCryptDrv_xor_intermediate::x_dcd( string $string, string $key )

Unknown Operation.

Parameters:

	$string
	$key

Returns:

string

Definition at line 117 of file xor.php.

References x_enc().

Referenced by dcd().

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                               {
    for($i=strlen($string)-1; $i>=0; $i--){
      if($i == 0 || $i == strlen($string)-1){
        for($j=0; $j<=strlen($key)-1; $j++){
          $string[$i] = $string[$i]^$key[$j];
        }
      }else{
        $string[$i] = $this->x_enc($string[$i], $key)^$string[$i-1]^$string[$i+1];
      }
    }
    return $string;
  }

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zCryptDrv_xor_intermediate::enc( string $str, string $key )

encodes

Parameters:

	$str
	$key

Returns:

string

Definition at line 136 of file xor.php.

References blockise(), get_block(), psubstr(), and x_enc().

Referenced by encode().

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                          {
    $str = base64_encode($this->blockise($str));
    for($i=0;$i<=strlen($str)-1;$i+=BLOCK_SIZE){
      if($i == 0 || $i == (strlen($str)-BLOCK_SIZE)){
        $repl = $this->x_enc($this->psubstr($str, $i, BLOCK_SIZE), $key);
        $str = substr_replace($str, $repl, $i, BLOCK_SIZE);
      }else{
        if($i == BLOCK_SIZE){
          $b = $this->x_enc($this->get_block($str, $i), $key);
        }
        $repl = $this->x_enc($this->get_block($str, $i+BLOCK_SIZE), $this->get_block($str, $i-BLOCK_SIZE));
        $str = substr_replace($str, $repl, $i, BLOCK_SIZE);
      }
    }
    $str .= $b;
    return $str;
  }

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zCryptDrv_xor_intermediate::dcd( string $str, string $key )

decodes

Parameters:

	$str
	$key

Returns:

string

Definition at line 160 of file xor.php.

References dblockise(), get_block(), psubstr(), and x_dcd().

Referenced by decode().

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                          {
    $b = $this->x_dcd($this->get_block($str, strlen($str)-BLOCK_SIZE), $key);
    $str = substr($str, 0, strlen($str)-BLOCK_SIZE);
    for($i=strlen($str)-BLOCK_SIZE;$i>=0;$i-=BLOCK_SIZE){
      if($i == 0 || $i == (strlen($str)-BLOCK_SIZE)){
        $repl = $this->x_dcd($this->psubstr($str, $i, BLOCK_SIZE), $key);
        $str = substr_replace($str, $repl, $i, BLOCK_SIZE);
      }else{
        if($i == BLOCK_SIZE){
          $str = substr_replace($str, $b, $i, BLOCK_SIZE);
        }else{
          $repl = $this->x_dcd($this->psubstr($str, $i-BLOCK_SIZE, BLOCK_SIZE), $this->psubstr($str, $i-(BLOCK_SIZE*2), BLOCK_SIZE));
          $str = substr_replace($str, $repl, $i, BLOCK_SIZE);
        }
      }
    }
    return $this->dblockise(base64_decode($str));
  }

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zCryptDrv_xor_intermediate::encode( string $str, string $key, int $mode = ENC_BIN )

Encodes using enc().

If $mode is ENC_BIN encodes in binary mode else if mode set to ENC_DEC encodes in decimal mode

Parameters:

	$str	string to Encode
	$key	key whith which to encode
	$mode	mode in binary mode or in decimal defaults to ENC_BIN however you can also use ENC_DEC

Returns:

string

Definition at line 187 of file xor.php.

References dec_encode(), enc(), and perror().

Referenced by zCryptDrv_xor::encrypt().

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                                              {
    if($mode == ENC_BIN){
      return $this->enc($this->enc($str, $key), md5($key));
    }elseif($mode == ENC_DEC){
      return $this->dec_encode($this->enc($this->enc($str, $key), md5($key)));
    }
    perror("Invalid MODE SPecified");
    return false;
  }

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zCryptDrv_xor_intermediate::decode( string $str, string $key, int $mode = ENC_BIN )

Decodes using dcd().

If $mode is ENC_BIN encodes in binary mode else if mode set to ENC_DEC encodes in decimal mode

Parameters:

	$str	string to decode
	$key	key whith which to decode
	$mode	mode in binary mode or in decimal defaults to ENC_BIN however you can also use ENC_DEC

Returns:

string

Definition at line 205 of file xor.php.

References dcd(), dec_decode(), and perror().

Referenced by zCryptDrv_xor::decrypt().

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                                              {
    if($mode == ENC_BIN){
      return $this->dcd($this->dcd($str, md5($key)), $key);
    }elseif($mode == ENC_DEC){
      return $this->dcd($this->dcd($this->dec_decode($str), md5($key)),$key);
    }
    perror("Invalid MODE SPecified");
    return false;
  }

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zCryptDrv_xor_intermediate::dec_decode( string $salted ) 

Decodes a Numarically encoded string.

Parameters:

$salted

Encoded string to decode

Returns:

string

Definition at line 220 of file xor.php.

References $val.

Referenced by decode().

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                              {
      $key = array(0,1,2,3,4,5,6,7,8,9);$ret = '';
      $val = $this->val;
      $str = str_replace($val, $key, $salted);
      for($i=0;$i<=strlen($str)-1;$i+=3){
        $current_group = $str[$i].$str[$i+1].$str[$i+2];
        $tmp_int = (int)($current_group);
        $ret .= chr($tmp_int);
      }
      return base64_decode($ret);
  }

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zCryptDrv_xor_intermediate::dec_encode( String $salt ) 

Encodes a string into 0-9 Numbers and returns that numarical string.

Parameters:

$salt

to encode

Returns:

string

Definition at line 237 of file xor.php.

References $val.

Referenced by encode().

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                            {
      $str = base64_encode($salt);$tmp = '';
      for($i=0;$i<=strlen($str)-1;$i++){
        if(ord($str[$i]) < 100){
          if(ord($str[$i]) > 0 && ord($str[$i]) < 10){
            $num = "00".ord($str[$i]);
          }
          elseif(ord($str[$i]) >= 10 && ord($str[$i]) < 100){
            $num = "0".ord($str[$i]);
          }
        }
        else{
          $num = ord($str[$i]);
        }
        $tmp .= $num;
      }
     $key = array(0,1,2,3,4,5,6,7,8,9);
     $val = $this->val;
     $ret = str_replace($key, $val, $tmp);
     return $ret;
    }

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Field Documentation

zCryptDrv_xor_intermediate::$val

Definition at line 31 of file xor.php.

Referenced by zCryptDrv_xor::__construct(), dec_decode(), and dec_encode().

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The documentation for this class was generated from the following file:

• xor.php