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[Authentication & Authorization](/categories/authentication) 4. / 5. neto737/googleauthenticator ActiveLibrary[Authentication & Authorization](/categories/authentication) neto737/googleauthenticator =========================== Google Authenticator 2-factor authentication 1.0.0(2y ago)025BSD-2-ClausePHPPHP >=8.1 Since Jul 2Pushed 2y agoCompare [ Source](https://github.com/neto737/GoogleAuthenticator)[ Packagist](https://packagist.org/packages/neto737/googleauthenticator)[ Fund](https://liberapay.com/neto737)[ RSS](/packages/neto737-googleauthenticator/feed)WikiDiscussions main Synced yesterday READMEChangelog (1)Dependencies (1)Versions (2)Used By (0) Google Authenticator PHP class ============================== [](#google-authenticator-php-class) - Copyright (c) 2012-2016, - Author: Michael Kliewe, [@PHPGangsta](http://twitter.com/PHPGangsta) and [contributors](https://github.com/PHPGangsta/GoogleAuthenticator/graphs/contributors) - Licensed under the BSD License. [![Latest Stable Version](https://camo.githubusercontent.com/e503177dbc28d4bc6b4105ff4ebd0f47afc716e43f21c175e436cb8de20b2bf5/68747470733a2f2f706f7365722e707567782e6f72672f6e65746f3733372f676f6f676c6561757468656e74696361746f722f76657273696f6e3f7374796c653d666f722d7468652d6261646765)](https://packagist.org/packages/neto737/googleauthenticator)[![Total Downloads](https://camo.githubusercontent.com/7b01b85da612985a53f6e414cced76c0ee1cde21336840748a3e1664532cf6f7/68747470733a2f2f706f7365722e707567782e6f72672f6e65746f3733372f676f6f676c6561757468656e74696361746f722f646f776e6c6f6164733f7374796c653d666f722d7468652d6261646765)](https://packagist.org/packages/neto737/googleauthenticator)[![License](https://camo.githubusercontent.com/2890fe8e65c0165299fa7d5be66668a9f9ba4e7739e4ef7b25ca316afe57af2a/68747470733a2f2f706f7365722e707567782e6f72672f6e65746f3733372f676f6f676c6561757468656e74696361746f722f6c6963656e73653f7374796c653d666f722d7468652d6261646765)](https://packagist.org/packages/neto737/googleauthenticator)[![PHP Version Require](https://camo.githubusercontent.com/d5208bf0ed14a0b8b90bfcdf7dee2b9fee130d76f419980a8dc8cd4e1db2b92f/68747470733a2f2f706f7365722e707567782e6f72672f6e65746f3733372f676f6f676c6561757468656e74696361746f722f726571756972652f7068703f7374796c653d666f722d7468652d6261646765)](https://packagist.org/packages/neto737/googleauthenticator)[![GitHub Workflow Status](https://camo.githubusercontent.com/05757ff7775973f63df3be316c51ce493e410097461f0dcf9758d9504a63e0b8/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f776f726b666c6f772f7374617475732f6e65746f3733372f476f6f676c6541757468656e74696361746f722f504850253230436f6d706f7365723f6c6f676f3d676974687562267374796c653d666f722d7468652d6261646765)](https://github.com/neto737/googleauthenticator)[![Codecov branch](https://camo.githubusercontent.com/842d8c42bab8bd2333c7e2e87ea915634f398012a9b3728bd7851551b736fc3f/68747470733a2f2f696d672e736869656c64732e696f2f636f6465636f762f632f67682f6e65746f3733372f676f6f676c6561757468656e74696361746f722f6d61696e3f6c6f676f3d636f6465636f76267374796c653d666f722d7468652d626164676526746f6b656e3d33384b504c3942583546)](https://app.codecov.io/gh/neto737/googleauthenticator) This PHP class can be used to interact with the Google Authenticator mobile app for 2-factor-authentication. This class can generate secrets, generate codes, validate codes and present a QR-Code for scanning the secret. It implements TOTP according to [RFC 6238](https://tools.ietf.org/html/rfc6238) For a secure installation you have to make sure that used codes cannot be reused (replay-attack). You also need to limit the number of verifications, to fight against brute-force attacks. For example you could limit the amount of verifications to 10 tries within 10 minutes for one IP address (or IPv6 block). It depends on your environment. Installation ------------ [](#installation) - Use [Composer](https://getcomposer.org/doc/01-basic-usage.md) to install the package - From project root directory execute following ``` $ composer require neto737/GoogleAuthenticator ``` Or if put the following in your `composer.json`: ``` "require": { "neto737/GoogleAuthenticator": "~2.0" } ``` Usage ----- [](#usage) See following example: ``` require 'vendor/autoload.php'; $ga = new \neto737\GoogleAuthenticator; $secret = $ga->createSecret(); echo "Secret is: " . $secret . PHP_EOL . PHP_EOL; $qrCodeUrl = $ga->getQRCodeGoogleUrl('Blog', $secret); echo "Google Charts URL for the QR-Code: ".$qrCodeUrl . PHP_EOL . PHP_EOL; $oneCode = $ga->getCode($secret); echo "Checking Code '$oneCode' and Secret '$secret': "; $checkResult = $ga->verifyCode($secret, $oneCode, 2); // 2 = 2*30sec clock tolerance if ($checkResult) { echo 'OK'; } else { echo 'FAILED'; } ``` Running the script provides the following output: ``` Secret is: OQB6ZZGYHCPSX4AK Google Charts URL for the QR-Code: https://www.google.com/chart?chs=200x200&chld=M|0&cht=qr&chl=otpauth://totp/infoATphpgangsta.de%3Fsecret%3DOQB6ZZGYHCPSX4AK Checking Code '848634' and Secret 'OQB6ZZGYHCPSX4AK': OK ``` Notes ----- [](#notes) If you like this script or have some features to add: contact me, visit my blog, fork this project, send pull requests, you know how it works. ### Health Score 24 — LowBetter than 31% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity6 Limited adoption so far Community16 Small or concentrated contributor base Maturity49 Maturing project, gaining track record Bus Factor2 2 contributors hold 50%+ of commits How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Unknown Total 1 Last Release 732d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/bf38d9675a95dfdd8b4b401459be6ef7c0342ea40359f23772a0c3ad2feae12b?d=identicon)[neto737](/maintainers/neto737) --- Top Contributors [![PHPGangsta](https://avatars.githubusercontent.com/u/608408?v=4)](https://github.com/PHPGangsta "PHPGangsta (27 commits)")[![neto737](https://avatars.githubusercontent.com/u/2430438?v=4)](https://github.com/neto737 "neto737 (26 commits)")[![symm](https://avatars.githubusercontent.com/u/69390?v=4)](https://github.com/symm "symm (6 commits)")[![LukaszPiechowiak](https://avatars.githubusercontent.com/u/8948593?v=4)](https://github.com/LukaszPiechowiak "LukaszPiechowiak (4 commits)")[![r--w](https://avatars.githubusercontent.com/u/1191700?v=4)](https://github.com/r--w "r--w (4 commits)")[![Sc00bz](https://avatars.githubusercontent.com/u/2030592?v=4)](https://github.com/Sc00bz "Sc00bz (3 commits)")[![pgampe](https://avatars.githubusercontent.com/u/855238?v=4)](https://github.com/pgampe "pgampe (3 commits)")[![samundra](https://avatars.githubusercontent.com/u/760855?v=4)](https://github.com/samundra "samundra (3 commits)")[![yanniks](https://avatars.githubusercontent.com/u/993397?v=4)](https://github.com/yanniks "yanniks (1 commits)")[![alexandregz](https://avatars.githubusercontent.com/u/1374718?v=4)](https://github.com/alexandregz "alexandregz (1 commits)")[![edwardmp](https://avatars.githubusercontent.com/u/1686739?v=4)](https://github.com/edwardmp "edwardmp (1 commits)")[![leandro-lugaresi](https://avatars.githubusercontent.com/u/858713?v=4)](https://github.com/leandro-lugaresi "leandro-lugaresi (1 commits)")[![vmelnic](https://avatars.githubusercontent.com/u/1056081?v=4)](https://github.com/vmelnic "vmelnic (1 commits)")[![34x](https://avatars.githubusercontent.com/u/60165?v=4)](https://github.com/34x "34x (1 commits)") --- Tags totp2fa2 factor authenticator library ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/neto737-googleauthenticator/health.svg) ``` [![Health](https://phpackages.com/badges/neto737-googleauthenticator/health.svg)](https://phpackages.com/packages/neto737-googleauthenticator) ``` ### Alternatives [paragonie/multi-factor Vendor-agnostic two-factor authentication library 142198.6k2](/packages/paragonie-multi-factor)[scheb/2fa-totp Extends scheb/2fa-bundle with two-factor authentication using TOTP 293.3M50](/packages/scheb-2fa-totp)[2amigos/2fa-library 2 Factor Authentication (2FA) library 34391.0k7](/packages/2amigos-2fa-library)[chillerlan/php-authenticator A generator for counter- and time based 2-factor authentication codes (Google Authenticator). 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