<?php
//define some empty variables used in the markup
$errorMessage = '';
$encrypt = '';
$decrypt = '';
//process the submitted form
if( isset($_REQUEST['formSubmit']) ){
$img = ( empty($_REQUEST['img']) ) ? null : $_REQUEST['img'];
$message = $_REQUEST['message'];
$encrypt = $_REQUEST['encrypt'];
if( empty($img) ){
//set error if image name not submitted
$errorMessage = 'You must select an image!!!';
}else{
//include the class file
require('imagekey.class.php');
//instantiate the class with the image name and path
$imgkey = new imageKey($img,'testimage/');
if( $message ){
//if a new message was submitted then encrypt it
$encrypt = $imgkey->encryptMsg($message);
}elseif( $encrypt ){
//otherwise decrypt the encrypted message if submitted
$decrypt = $imgkey->decryptMsg($encrypt);
}
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8">
<title>Image Key Example</title>
</head>
<body>
<form method="POST">
<?php
if( $errorMessage ){
?>
<div style="padding:10px;border: solid thin red;"><?php echo $errorMessage;?></div>
<?php
}
?>
<div style="padding:10px;">Select an image and either enter a new message or test decrypting the encrypted message</div>
<div style="margin:20px;float:left;"><img src="testimage/attach.png"><br><input type="radio" name="img" value="attach.png"></div>
<div style="margin:20px;float:left;"><img src="testimage/camera.png"><br><input type="radio" name="img" value="camera.png"></div>
<div style="margin:20px;float:left;"><img src="testimage/cancel.png"><br><input type="radio" name="img" value="cancel.png"></div>
<div style="margin:20px;float:left;"><img src="testimage/cross.png"><br><input type="radio" name="img" value="cross.png"></div>
<div style="margin:20px;float:left;"><img src="testimage/stop.png"><br><input type="radio" name="img" value="stop.png"></div>
<div style="clear:both;"></div>
<div>New message:<br><textarea name="message" style="width:500px;height:100px;"></textarea></div>
<div>Encrypted message:<br><textarea name="encrypt" style="width:500px;height:150px;"><?php echo $encrypt;?></textarea></div>
<div><input type="hidden" name="formSubmit" value="1"><input type="submit" value="Go"></div>
</form>
<?php
if( $decrypt ){
?>
<hr>
<div>
Decrypted message: <?php echo $decrypt;?><br>
</div>
<div style="padding:10px;">You should only see a proper decryption if you selected the image it was encrypted with</div>
<?php
}
?>
</body>
</html>
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