includes/rijndael.php
changeset 54 84b56303cab5
parent 45 9cb99e37bfc4
child 229 b2f985e4cef3
equal deleted inserted replaced
53:3dea509d88ae 54:84b56303cab5
   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 ( $text == '' )
       
   748       return '';
   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   {
       
   805     if ( $text == '' )
       
   806       return '';
   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, $key) {
  1000       if ($str == "") {
  1004       if ($str == "")
       
  1005       {
  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) {