google-authenticator

Introduction

This is a module to integrate web sites with Google Authenticator.

Requirements

• ChristianRiesen/base32 (1.2)
• zendframework/zend-math (>2.2.*)

Installation

1. Add this project in your composer.json:

    "require": {
        "leandrolugaresi/google-authenticator": "1.0.*"
    }

1. Now tell the composer to download the repository by running the command:

    $ php composer.phar update

Usage

Step 1 - Register application

Show the QrCode and the form:

    $googleAuth = new \GoogleAuthenticator\GoogleAuthenticator();
    $googleAuth->setIssuer('YourApplicationName');
    //save the secretKey to register after
    $_SESSION['secretKeyTemp'] = $googleAuth->getSecretKey();

    // Show the qrcode to register
    //this param is an identifier of the user in this application
    echo $googleAuth->getQRCodeUrl($user->username.'@YourApplicationName');

Verify the code from form and save the secretKey of this user:

    $google = new GoogleAuthenticator($_SESSION['secretKeyTemp']);
    $userSubmitCode = $_POST['codeFoo'];
    if ($google->verifyCode($userSubmitCode)) {
        //save the secretKey of this user
    }

Step 2 - Verify Code at login

    $google = new GoogleAuthenticator($user->getSecretKey());
    $userSubmitCode = $_POST['codeFoo'];

    // Verify Code
    if ($google->verifyCode($userSubmitCode)) {

        // OK - aloowed login
    }