fisrt task given: hashing the url using combination of sha-1 and md5 algorithm....

sha-1 and md5 hashing.php


 <?php
  

if (isset($_POST['URL'])) {
   //Start MD5 Hash Generator\\
   $pass2=$_POST['URL'];
   $URL=md5($pass2);
  
   if($_POST['URL'] != NULL)
      $pass3=sha1($URL); }
   else
      $pass3= "";
    
$dbhost = 'localhost';
$dbuser = 'root';
$conn = mysql_connect($dbhost, $dbuser);
if(! $conn ) {
{
  die('Could not connect: ' . mysql_error());
}

if(! get_magic_quotes_gpc() )
{
   $url_name = addslashes ($_POST['URL']);
   $hash_value = addslashes ($_POST['hash']);
}
else
{
   $url_name = $_POST['URL'];
   $hash_value= $_POST['hash'];
}

$sql = "INSERT INTO urldata ".
       "(url_name,hash_value) ".
       "VALUES ".
       "('$url_name','$hash_value')";
   mysql_select_db('url');
   $retval = mysql_query( $sql, $conn );
   if(! $retval )
 {
    die('Could not enter data: ' . mysql_error());
 }
   echo "Entered data successfully!\n";
   mysql_close($conn);
}
?>


<html>
<head><title>Cyber-MyCert </title>

</head>
<center><body><h3> Hashing The URL'S </h3></center>

   <?php include ("md5.php"); ?>

  <center> <form action = 'hashing md5 and sha1.php' name='gen' method= 'post'>
   URL'S: <br><input type='text'  size='30' maxlength='50' name='URL'> <br/>
   HASH VALUE : <br><input type='text' size='50' maxlength='80'name="hash" value= "<?php echo $pass3;?>"> <br/></center>
      
  <br><div align="center"><input type="submit" value="Hash Me"/></div></br>
   <div align="center"><input type="reset" value="Back"/></div>
 
 <center>

               ENTER HASH VALUE : <br><input type='text' size='50' maxlength='80' name='hashme' > <br/>
               <input type ="submit" name ="verify1" value = "verify">            
  </form></center>
  <?php
   if(isset($_POST['verify1']))
{

       $npass= ($_POST['hashme']);
      //$hash_me=$_POST["hashme"];
               //$hash_1=$_POST["hash"];
 
  //if (strcmp($hash_me,$hash_1)=0{
  //{ print "same <br>"};
  //else {print "not same <br>"};
 
  //}
 
if ($npass == $_POST["hash"])
{
                 echo "The hash match";
          }
                  else //($npass != isset($_POST["hash"]))
//if ($npass != isset($_POST["hash"]))
             {    
      echo "The hash do not match";
 }


}



 ?>
</html>
md5.php


<html>
<head>

</head>

<body>
  <center>
    <div align="center">

      <tr><?php
      echo " MD5 (Message-Digest algorithm 5) is a widely used cryptographic hash function with a 128-bit hash value.
       An MD5 hash is typically expressed as a 32-digit hexadecimal number.While, SHA-1 produces a 160-bit message digest"
?> <tr/>
    </div>
  </center>

</html>