CLASS MCRYPT

<?php

class mcrypt {
var $algorithm = MCRYPT_TRIPLEDES;
var $mode = MCRYPT_MODE_CFB;
var $defKey ='54087c0be6244cb2755efa439469302d';
var $key;

	function mcrypt($arg = NULL)
	{
	
		if($arg == NULL)
		{
		
			$this->key = $this -> defKey;
		
		}	else {
			
			$this->key = $arg;
		}

		$this->openModule();
	
	}
	
	function openModule()
	{

		if($this->td = @mcrypt_module_open($this ->algorithm,'',$this ->mode,''))
		{
		
			$this -> createIv();
		
		}	else {
		
			trigger_error('Open module failt',E_USER_ERROR);
			
		}//end if
	
	}
	
	
	function createIv()
	{
	
		if($this -> size = @mcrypt_get_iv_size ($this ->algorithm, $this->mode))
		{
			
			if($this -> iv = @mcrypt_create_iv($this->size,MCRYPT_RAND))
			{
			
					mcrypt_generic_init ($this -> td, substr($this->key,0,mcrypt_enc_get_key_size($this -> td)), $this -> iv);

				
			} else {

				trigger_error('mcrypt_create_iv failt',E_USER_ERROR);
				
			}//end if
		
		} else {
		
			trigger_error('mcrypt_get_iv_size failt',E_USER_ERROR);
		
		}//end if
	
	}//end function
	
	function encrypt($string)
	{
	
		return mcrypt_generic ($this -> td, $string);
		
	}
	
	function decrypt($string)
	{
	
		return mdecrypt_generic($this -> td,$string);
	
	}
	
	function closeMcrypt()
	{
	
	    mcrypt_generic_deinit ($this->td);
		mcrypt_module_close ($this->td);

	
	}

}
?>