Membuat Login Two Factor Authentication dengan PHP

Selamat siang...
Kali ini saya mau share bagaimana caranya membuat Login atau Signup dengan Two Factor Authentication menggunakan PHP.

Langsung aja ya.....

Pertama kita buat dulu databasenya :

CREATE TABLE `users` (
`uid` int NOT NULL PRIMARY KEY AUTO_INCREMENT ,
`username` varchar(25) NOT NULL UNIQUE,
`password` varchar(200) NOT NULL ,
`email` varchar(100) NOT NULL,
`name` varchar(100) NOT NULL,
`profile_pic` varchar(200) NOT NULL,
`google_auth_code` varchar(16) NOT NULL /* 16 digit code */
);


Kedua, kita buat file config.php nya :

<?php
session_start();
/* KONFIGURASI DATABASE  */
define('DB_SERVER', 'localhost');
define('DB_USERNAME', 'username');
define('DB_PASSWORD', 'password');
define('DB_DATABASE', 'databasename');
define("BASE_URL", "http://localhost/GoogleAuth/"); // Eg. http://websitekamu.com

function getDB() 
{
$dbhost=DB_SERVER;
$dbuser=DB_USERNAME;
$dbpass=DB_PASSWORD;
$dbname=DB_DATABASE;
try {
$dbConnection = new PDO("mysql:host=$dbhost;dbname=$dbname", $dbuser, $dbpass); 
$dbConnection->exec("set names utf8");
$dbConnection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
return $dbConnection;
}
catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}

}
?>


Ketiga, kita buat file index.php nya :

<?php
include("config.php");
if(!empty($_SESSION['uid']))
{
header("Location: device_confirmations.php");
}
include('class/userClass.php');
$userClass = new userClass();

require_once 'googleLib/GoogleAuthenticator.php';
$ga = new GoogleAuthenticator();
$secret = $ga->createSecret(); //membuat 16 digit secret key unik

$errorMsgReg='';
$errorMsgLogin='';
/* Login Form */
if (!empty($_POST['loginSubmit'])) 
{
$usernameEmail=$_POST['usernameEmail'];
$password=$_POST['password'];
if(strlen(trim($usernameEmail))>1 && strlen(trim($password))>1 )
{
$uid=$userClass->userLogin($usernameEmail,$password);
if($uid)
{
$url=BASE_URL.'home.php';
header("Location: $url"); // langsung ke index 
}
else
{
$errorMsgLogin="Please check login details.";
}
}
}

/* Signup Form */
if (!empty($_POST['signupSubmit'])) 
{
$username=$_POST['usernameReg'];
$email=$_POST['emailReg'];
$password=$_POST['passwordReg'];
$name=$_POST['nameReg'];
/* Regular expression check */
$username_check = preg_match('~^[A-Za-z0-9_]{3,20}$~i', $username);
$email_check = preg_match('~^[a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.([a-zA-Z]{2,4})$~i', $email);
$password_check = preg_match('~^[A-Za-z0-9!@#$%^&*()_]{6,20}$~i', $password);

if($username_check && $email_check && $password_check && strlen(trim($name))>0) 
{
$uid=$userClass->userRegistration($username,$password,$email,$name);
if($uid)
{
$url=BASE_URL.'home.php';
header("Location: $url"); // Page redirecting to home.php 
}
else
{
$errorMsgReg="Username or Email already exists.";
}
}
}
?>

Untuk demo, silahkan klik disini
Download file lengkapnya disini

Semoga bermaanfaat.
Terimakasih