742    * @param int $return_encoding optional - can be ENC_BINARY, ENC_HEX or ENC_BASE64

   742    * @param int $return_encoding optional - can be ENC_BINARY, ENC_HEX or ENC_BASE64

   743    */

   743    */

   744    

   744    

   745   function encrypt($text, $key, $return_encoding = ENC_HEX)

   745   function encrypt($text, $key, $return_encoding = ENC_HEX)

   746   {

   746   {

   747     if ( $this->mcrypt && $this->blockSizeInBits == mcrypt_module_get_algo_block_size(eval('return MCRYPT_RIJNDAEL_'.$this->keySizeInBits.';')) )

   749     if ( $this->mcrypt && $this->blockSizeInBits == mcrypt_module_get_algo_block_size(eval('return MCRYPT_RIJNDAEL_'.$this->keySizeInBits.';')) )

   748     {

   750     {

   749       $iv_size = mcrypt_get_iv_size($this->mcrypt, MCRYPT_MODE_ECB);

   751       $iv_size = mcrypt_get_iv_size($this->mcrypt, MCRYPT_MODE_ECB);

   750       $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);

   752       $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);

   751       $cryptext = mcrypt_encrypt($this->mcrypt, $key, $text, MCRYPT_MODE_ECB, $iv);

   753       $cryptext = mcrypt_encrypt($this->mcrypt, $key, $text, MCRYPT_MODE_ECB, $iv);

   798    * @return string

   800    * @return string

   799    */

   801    */

   800    

   802    

   801   function decrypt($text, $key, $input_encoding = ENC_HEX)

   803   function decrypt($text, $key, $input_encoding = ENC_HEX)

   802   {

   804   {

   803     switch($input_encoding)

   807     switch($input_encoding)

   804     {

   808     {

   805       case ENC_BINARY:

   809       case ENC_BINARY:

   806       default:

   810       default:

   807         break;

   811         break;

   995       while ($n <= -2147483649) $n += 4294967296;

   999       while ($n <= -2147483649) $n += 4294967296;

   996       return (int)$n;

  1000       return (int)$n;

   997   }

  1001   }

   998    

  1002    

   999   function encrypt($str, $key) {

  1003   function encrypt($str, $key) {

  1001           return "";

  1006           return "";

  1002       }

  1007       }

  1003       $v = $this->str2long($str, true);

  1008       $v = $this->str2long($str, true);

  1004       $k = $this->str2long($key, false);

  1009       $k = $this->str2long($key, false);

  1005       if (count($k) < 4) {

  1010       if (count($k) < 4) {