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ajax.php
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<?php
header('Content-Type: application/json');
$return = array();
require_once("functions.php");
$servername = "127.0.0.1";
$username = "root";
$password = "123abc";
$database = "sec2";
// Create connection
$db = new mysqli($servername, $username, $password);
$db->select_db($database);
// Check connection
if ($db->connect_error) {
die("Connection failed: " . $db->connect_error);
}
// Post functions
if(isset($_POST)) {
$key = pack('H*', hash('sha256', $_POST['password']));
$username = $_POST['username'];
$message = encrypt($key, $_POST['message']);
if($_POST['encrypt']) {
$return['type'] = 'encrypt';
if($_POST['username'] == '')
$return['msg'] = 'Vul een gebruikersnaam in.';
elseif($_POST['password'] == '')
$return['msg'] = 'Vul een wachtwoord in.';
elseif($_POST['message'] == '')
$return['msg'] = 'Vul een geheim bericht in.';
elseif(saveToDB($db, $username, $message)) {
$return['msg'] = 'Bericht is succesvol opgeslagen met encryptie!';
}
} else {
$return['type'] = 'decrypt';
if($_POST['username'] == '')
$return['msg'] = 'Vul een gebruikersnaam in.';
elseif($_POST['password'] == '')
$return['msg'] = 'Vul een wachtwoord in.';
else {
$message = getFromDB($db, $username);
$return['decryptedMessage'] = decrypt($key, $message);
$return['msg'] = 'Bericht is succesvol opgehaald.';
}
}
}
$db->close();
echo json_encode($return);