https://github.com/enygma/gauth

Google Authenticator Code Validation and Generation
https://github.com/enygma/gauth

gauth google-authenticator php

Last synced: 3 days ago
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Google Authenticator Code Validation and Generation

• Host: GitHub
• URL: https://github.com/enygma/gauth
• Owner: enygma
• License: mit
• Created: 2013-01-07T20:58:20.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2017-11-14T11:46:14.000Z (about 7 years ago)
• Last Synced: 2024-12-18T18:07:19.601Z (11 days ago)
• Topics: gauth, google-authenticator, php
• Language: PHP
• Size: 17.6 KB
• Stars: 75
• Watchers: 9
• Forks: 12
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
GAuth : Google Authenticator Code Generator/Validation

=========================

[![Total Downloads](https://img.shields.io/packagist/dt/enygma/gauth.svg?style=flat-square)](https://packagist.org/packages/enygma/gauth)

The `GAuth` library is designed to generate and validate codes compatible with the

Google Authenticator tools.

### Installation via Composer:

Include in your `composer.json` file:

```

{

    "require": {

        "enygma/gauth": "dev-master"

    }

}

```

#### Getting Started

To get started using the Google Authenticator with your application, you'll need to make an

initialization key (using `generateCode`) and save that to your app's settings. This is the

code you'll share with your users when they're trying to set up their client for your system.

Then, when they log in you have them enter in the latest code listed for your application for

thier account.

**NOTE:** This tool offers a "window of opportunity" for the codes of 2 seconds forward and

backward of the current timestamp, just in case things are a bit off. You can change this with

the `setRange` method:

```php

setRange(3);

?>

```

#### To generate a new code:

```php

generateCode();

var_dump($code);

?>

```

#### To validate a code

```php

validateCode($code);

if ($verify == true) {

    echo 'User code verified!';

} else {

    echo 'User code invalid!';

}

?>

```

#### To get the QR code for the application

You can also use the tool to get the URL for a QR code users can scan to add your application to their Authenticator client. The call to `generateQrImage` returns the actual image data for you to use as you wish, either to embed in an `img` tag or save to a file:

```php

generateQrImage($holder, $name, 200);

// To use in an image tag:

echo '
';


// Or just save to a file

file_put_contents('/path/to/qr-file.png', $qrCodeImageData);

?>

```

The library uses internal QR code generation, not the Google Charts API many similar libraries use.

#### More info:

- [Google TOTP Two-factor Authentication for PHP](http://www.idontplaydarts.com/2011/07/google-totp-two-factor-authentication-for-php/)

- [Links to client for smartphones](http://support.google.com/accounts/bin/answer.py?hl=en&answer=1066447)