<?php//	 Session Encryption by Ari Kuorikoski <ari.kuorikoski@finebyte.com>class MD5Crypt{		function keyED($txt,$encrypt_key)		{				$encrypt_key = md5($encrypt_key);				$ctr=0;				$tmp = "";				for ($i=0;$i<strlen($txt);$i++){						if ($ctr==strlen($encrypt_key)) $ctr=0;						$tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);						$ctr++;				}				return $tmp;		}		function Encrypt($txt,$key)		{				srand((double)microtime()*1000000);				$encrypt_key = md5(rand(0,32000));				$ctr=0;				$tmp = "";				for ($i=0;$i<strlen($txt);$i++)				{				if ($ctr==strlen($encrypt_key)) $ctr=0;				$tmp.= substr($encrypt_key,$ctr,1) .				(substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));				$ctr++;				}				return base64_encode($this->keyED($tmp,$key));		}		function Decrypt($txt,$key)		{				$txt = $this->keyED(base64_decode($txt),$key);				$tmp = "";				for ($i=0;$i<strlen($txt);$i++){						$md5 = substr($txt,$i,1);						$i++;						$tmp.= (substr($txt,$i,1) ^ $md5);				}				return $tmp;		}		function RandPass()		{				$randomPassword = "";				srand((double)microtime()*1000000);				for($i=0;$i<8;$i++)				{						$randnumber = rand(48,120);						while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96))						{								$randnumber = rand(48,120);						}						$randomPassword .= chr($randnumber);				}				return $randomPassword;		}}?>