md5 incription error how to solve please help

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PHP

jQuery

HTML5

Dear Sir,

I have used md5 encryption in registration page and also used in login for encrypt password and check with sql database but problem is.

When i register a new account it encrypt the password like

naveen123 = adkjfdaf35a6df54das65fa4dsda4f

but when i login with the same password then it automatically adds two string extra at the end like

naveen123 = adkjfdaf35a6df54das65fa4dsda4f8c

what i do? please suggest

login HTML

<form name="login" method="POST" action="http://localhost/rb2/checkpoint/index.php">

<label for="username" class="control-label fa-label"><i class="fa fa-user fa-medium"></i></label>

<input type="text" name="username" id="username" placeholder="Username"/><br/>

<label for="password" class="control-label fa-label"><i class="fa fa-lock fa-medium"></i></label>

<input type="password" name="password"  id="password" placeholder="Password"/>

<input id="checkbox" type="checkbox" >

<h5 style="margin-left:30px;margin-top:-14px;">Remember me</h5>
<br>
<input type="button" id="sub" name="submit" class="btn_ok" value="Log in"/>
<br>
<a href="#" style="float:right;margin-top:10px;">Forgot Password?</a>
<br>
</form>

if($_SERVER['REQUEST_METHOD'] == 'POST')

{

    $username = $_POST['username'];

    $password = md5($_POST['password']);

    $username = stripslashes($username);

    $password = stripslashes($password);

    $username = mysql_real_escape_string($username);

    $password = mysql_real_escape_string($password);





    $sql = "select * from users where username = '$username' and password = '$password'";

    $result = mysql_query($sql);

    $count = mysql_num_rows($result);

    if($count==1)

    {

       $_SESSION['user']= $username;

       header("Location:http://localhost/rb2/dashboard");

    }

    else

    {

         $error = "Incorrect Username or Password";

    }

}

else

{

        $error = "";

}

?>

Registration Page



 <label for="password" class="control-label">Password</label>

<input type="password" class="form-control" id="password" placeholder="">

</div>

<div class="col-md-6">

<label for="password" class="control-label">Confirm Password</label>

<input type="password" class="form-control" id="password_confirm" placeholder="">

</div>

</div>

<div class="form-group">

<div class="col-md-12">

<label><input type="checkbox" name="checkit" id="checkit">I agree to the <a href="javascript:;" data-toggle="modal" data-target="#templatemo_modal">Terms of Service</a> and <a href="#">Privacy Policy.</a></label>

</div>

</div>

<p style="color:#F78E21" class="noname">Enter First name</p>

<p style="color:#F78E21" class="noemail">Enter Email Address</p>

<p style="color:#F78E21"class="nosex">Select Gender</p>

<p style="color:#28AAFF;" class="inemail">Enter valid Email Address</p>

<p style="color:#F78E21" class="phoneno">Enter Mobile No.</p>

<p style="color:#F78E21"  class="nouser">Enter a Username</p>

<p style="color:#F78E21" class="nopass">Enter Password</p>

<p style="color:#F78E21" class="conpass">Password and Confirm Password Not Matching</p>



<div class="form-group">

<div class="col-md-12">

<input type="submit" id="submit" value="Create account" class="crystal">

</div>

</div>

</div>

<?php



session_start();



$link = mysql_connect('localhost','root','');



include("dbcon.php");



mysql_select_db("rb",$link) or die('couldnt able to connect db');



$fname = $_POST['fname'];

$lname = $_POST['lname'];

$email = $_POST['email'];

$mobile = $_POST['mobile'];

$sex = $_POST['sex'];

$username = str_replace(' ','',$_POST['username']);

$password = str_replace(' ','',$_POST['password']);

$password = md5($password);



$sql = "INSERT into users(firstname,lastname,email,username,password,gender,mobile) values('$fname','$lname','$email','$username','$password','$sex','$mobile')";



mysql_query($sql) or die("$query:<br>".mysql_error());



$_SESSION['user']=$username;



mysql_close($link);



?>

javascript



function checklogin(){



    var user = $("#username").val();

    var pass = $("#password").val();



    var data = 'username=' + user + '&password=' + pass;



    $.ajax({

        type: 'POST',

        data: data,

        url: 'checkpoint/index.php',

        dataType: 'html',

        success: function(res){

            alert(res);

            if(res==1)

            {

                   alert("OK");

            }

            else if(res==0)

            {

                alert("NOT OK");

            }

        }



    });



};



createuser jquery



function createuser(){

    var fname = $("#first_name").val();

    var lname = $("#last_name").val();

    var email = $("#email").val();

    var mobile = $("#mobile").val();

    var username = $("#username").val();

    var password = $("#password").val();

    var sex = $("input[name=optionsRadios]:checked").val();



    var postdata = 'fname=' + fname + '&lname=' + lname + '&email=' + email + '&mobile=' + mobile + '&username=' + username + '&password=' + password + "&sex=" + sex;



     $.ajax({

         type: 'POST',

         url: 'http://localhost/rb2/php/registration.php',

         data: postdata,

         success: function(){

            window.location.href = "http://localhost/rb2/dashboard";

         },

         error: function(){

            alert("Sorry, There is some problem Please Contact Us");

         }

   });

};

Database

users

username
----------------
varchar(30) and primary key


Password
------------------------------
varchar(30)


there are many fields but prob in password