Tutorialswithtips: Codeigniter--Encryption & Decryption of Data

After Dynamic Calender, We will be learning about encryption and Decryption in Data.

1. Rename your Codeigniter folder as "EncIgniter".

2. Now configure your files.Go to C:\xampp\htdocs\EncIgniter\application\config.

Now select autoload.php and make changes as follows.

$autoload['libraries'] = array('xmlrpc');

$autoload['helper'] = array('url', 'file','form');

3. Select config.php and make the changes as follows.

$config['base_url'] = 'http://localhost/EncIgniter/';

4. Select routes.php and make the changes as follows.

$route['default_controller'] = "encrypt_ctrl";
$route['404_override'] = '';

5. Create a new folder named "css" in C:\xampp\htdocs\EncIgniter.

6. Now create a new file encrypt_ctrl.php in C:\xampp\htdocs\EncIgniter\application\controllers.Copy and paste the code given below.

encrypt_ctrl.php

7. Create another file encrypt_view.php in C:\xampp\htdocs\EncIgniter\application\views.Copy and paste the code given below.

encrypt_view.php

<html>
<head>
<title>Encryption and Decryption</title>
<link rel="stylesheet" type="text/css" href="<?php echo base_url();?>css/style.css">
</head>
<body>
<div id="main">
<div id="show_form">
<h2>
Encryption and Decryption</h2>
<?php
echo form_open('encrypt_ctrl/key_encoder');
echo "<div class='error_msg'>
";
echo validation_errors();
echo "</div>
";
echo form_label('Enter a Message');
$data = array('name' => 'key','placeholder' => 'Enter a Message');
echo form_input($data);
echo form_submit('submit','Encode');
echo form_close();
if(isset($decrypt_value) && $decrypt_value != NULL)
{
echo form_fieldset('Decrypted Message',"class='result_decode'");
echo "<b>" . $decrypt_value . "</b>";
echo form_fieldset_close();
}
?>
</div>
</div>
<?php
if(isset($encrypt_value) && $encrypt_value != NULL)
{
echo form_fieldset('Encrypted Message',"class='result_encode'");
echo "<b>" . $encrypt_value . "</b>";
echo form_fieldset_close();
echo "<div class='decode_form'>
";
echo form_open('encrypt_ctrl/key_decoder');
echo form_label('Decode Encrypted Message');
$data = array('name' => 'encrypt_key','value' => $encrypt_value);
echo form_input($data);
echo form_submit('submit','Decode');
echo form_close();
echo "</div>
";
}
?>

8. Create a new file style.css and save it in C:\xampp\htdocs\EncIgniter\css. Copy and paste the code given below.

style.css

#main
{
width:850px;
margin:100px auto;
font-family:Times New Roman;
}
h2
{
background-color:#ffd2e8;
text-align:center;
border-radius: 5px 5px 10 10;
margin: -10px -40px;
padding: 26px;
}
hr
{
border:0;
border-bottom:2px solid #ccc;
margin: 20px -40px;
margin-bottom: 30px;
}
#show_form
{
width:300px;
float: left;
border-radius: 10px;
font-family:Times New Roman;
border: 6px solid #ccc;
padding: 10px 40px 25px;
margin-top: 10px;
}
.result_encode
{
position: absolute;
width: auto;
border-radius: 20px;
font-family: Times New Roman;
border: 2px solid #ccc;
top: 400px;
padding: 30px;
word-wrap:break-word;
}
.result_decode
{
position: absolute;
width: 500px;
border-radius: 10px;
font-family: Times New Roman;
border: 2px solid #ccc;
top: 400px;
left: 306px;
padding: 30px;
word-wrap:break-word;
}
.decode_form
{
position: absolute;
width: 300px;
float: right;
border-radius: 10px;
font-family: Times New Roman;
border: 4px solid #ccc;
top: 540px;
left: 326px;
padding: 50px 40px 25px;
}
input[type=text]
{
width:100%;
padding: 10px;
margin-top: 8px;
border: 1px solid #ccc;
padding-left: 5px;
font-size: 16px;
font-family:Times New Roman;
background-color: #fff0f7;
}
input[type=submit]
{
width: 100%;
background-color:#87CEFA;
color: white;
border: 2px solid #4dcbff;
padding: 10px;
font-size:20px;
cursor:pointer;
border-radius: 5px;
margin-bottom: 15px;
}
.error_msg
{
color:red;
font-size: 16px;
}

9. Finally navigate your url to http://localhost/EncIgniter/. You should get the following screen.

10. That's it!! we successfully developed an encryption and decryption-data application. In our next tutorial we will be learning about Image Uploading.

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Monday, October 12, 2015

Codeigniter--Encryption & Decryption of Data

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