How to create google two factor authentication using php?

跟風遠走 提交于 2021-01-22 13:12:56

问题


I want to use Google 2FA in my PHP project. The user needs to enter the 6 digit 2fa code while logging in.

May you draw some tips on which direction to take?


回答1:


Step 1) Create a unique secret code of length 16 characters. PHPGangsta provides wrapper class for Google Authenticator. You can download using composer.

curl -sS https://getcomposer.org/installer | php
php composer.phar require  phpgangsta/googleauthenticator:dev-master
Use the below code to generate the secret code.

<?php
require 'vendor/autoload.php';
$authenticator = new PHPGangsta_GoogleAuthenticator();
$secret = $authenticator->createSecret();
echo "Secret: ".$secret;

?>

Step 2) Create a QR code withe the generated secret.

We need to prepare a QR code using the secret. If you want to read more about QR code generation for Google Authenticator. Github Wiki You can use any QR code generator to generate the QR code, For this demo I am using Google charts.

1
2
3
4
5
6
7
8
9
10
11
12
13
<?php
require 'vendor/autoload.php';
$authenticator = new PHPGangsta_GoogleAuthenticator();
$secret = $authenticator->createSecret();
echo "Secret: ".$secret."\n";  //save this at server side


$website = 'http://hayageek.com'; //Your Website
$title= 'Hayageek';
$qrCodeUrl = $authenticator->getQRCodeGoogleUrl($title, $secret,$website);
echo $qrCodeUrl;

?>

Step 3) Generate TOTP (Time-Based One time password) using Google Authenticator App

Download the Google Authenticator app from Google Play or AppStore

Open the app and Click on ‘+’ Button, and scan the QR code generated using Google Charts. Authenticator app generates the TOTP for your website. TOTP will change for every 30 secs.

Two factor authentication with Google Authenticator

Step 4) Verifying OTP at server side

<?php
require 'vendor/autoload.php';
$authenticator = new PHPGangsta_GoogleAuthenticator();

$secret = '3JMZE4ASZRIISJRI'; //This is used to generate QR code
$otp = '183036' ;//Generated by Authenticator.

$tolerance = 0;
    //Every otp is valid for 30 sec.
    // If somebody provides OTP at 29th sec, by the time it reaches the server OTP is expired.
    //So we can give tolerance =1, it will check current  & previous OTP.
    // tolerance =2, verifies current and last two OTPS

$checkResult = $authenticator->verifyCode($secret, $otp, $tolerance);    

if ($checkResult) 
{
    echo 'OTP is Validated Succesfully';

} else {
    echo 'FAILED';
}

?>

   source code refer this link : http://hayageek.com/two-factor-authentication-with-google-authenticator-php/


来源:https://stackoverflow.com/questions/42290885/how-to-create-google-two-factor-authentication-using-php

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!