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[Utility & Helpers](/categories/utility) 4. / 5. greymich/php-totp ActiveLibrary[Utility & Helpers](/categories/utility) greymich/php-totp ================= PHP TOTP implementation for rfc6238 2.0.0(5y ago)550.7k—4.6%2[1 PRs](https://github.com/sunnyvision/php-totp/pulls)MITPHPPHP >=5.6 Since May 7Pushed 5y ago1 watchersCompare [ Source](https://github.com/sunnyvision/php-totp)[ Packagist](https://packagist.org/packages/greymich/php-totp)[ RSS](/packages/greymich-php-totp/feed)WikiDiscussions master Synced 1mo ago READMEChangelogDependencies (1)Versions (2)Used By (0) PHP TOTP ======== [](#php-totp) Important notice ---------------- [](#important-notice) For PHP 8.0 or above please use ^2.0. For PHP below 8.0, use ^1.0. This library is an implementation of totp (rfc6238) in php (currently only sha1) Features -------- [](#features) - PSR-4 autoloading compliant structure - Unit-Testing with PHPUnit - Easy to use to any framework or even a plain php file - Supports SHA1 of HOTPTimeBased Installation ------------ [](#installation) Using composer (recommended): ``` $ composer require greymich/php-totp ``` In separate package: ``` require "path/to/lib/src/TOTP.php" ``` Examples -------- [](#examples) To start randomize a base32 secret or create one from an ASCII string ``` // ASCII to base32 $secret = Greymich\TOTP\TOTP::base32Encode("12345678901234567890"); // Random $secret = Greymich\TOTP\TOTP::genSecret(32); // Initiate totp instance by secret $otp = new Greymich\TOTP\TOTP($secret); ``` Validate an OTP ``` $userInput = ""; $secret = ""; $otp = new Greymich\TOTP\TOTP($secret); // To mitigate possible timing attacks if(hash_equals( $otp->get(), $userInput )) { // Correct } ``` Generate OTP registration uri (For QR scanning) ``` $secret = Greymich\TOTP\TOTP::base32Encode("12345678901234567890"); $otp = new Greymich\TOTP\TOTP($secret); $uri = $otp->uri("[Platform] h.y.michael@icloud.com"); ``` Tests ----- [](#tests) ``` composer test ``` ``` TOTP ✔ Should be true ✔ Should be free of syntax error ✔ Should encode and decode base 32 ✔ Should generate totp with sha 1 ✔ Should generate google authenticator compatible uri ``` Test are run against SHA1 of rfc6238 suggested testing vectors ``` +-------------+--------------+------------------+----------+--------+ | Time (sec) | UTC Time | Value of T (hex) | TOTP | Mode | +-------------+--------------+------------------+----------+--------+ | 59 | 1970-01-01 | 0000000000000001 | 94287082 | SHA1 | | | 00:00:59 | | | | | 59 | 1970-01-01 | 0000000000000001 | 46119246 | SHA256 | | | 00:00:59 | | | | | 59 | 1970-01-01 | 0000000000000001 | 90693936 | SHA512 | | | 00:00:59 | | | | | 1111111109 | 2005-03-18 | 00000000023523EC | 07081804 | SHA1 | | | 01:58:29 | | | | | 1111111109 | 2005-03-18 | 00000000023523EC | 68084774 | SHA256 | | | 01:58:29 | | | | | 1111111109 | 2005-03-18 | 00000000023523EC | 25091201 | SHA512 | | | 01:58:29 | | | | | 1111111111 | 2005-03-18 | 00000000023523ED | 14050471 | SHA1 | | | 01:58:31 | | | | | 1111111111 | 2005-03-18 | 00000000023523ED | 67062674 | SHA256 | | | 01:58:31 | | | | | 1111111111 | 2005-03-18 | 00000000023523ED | 99943326 | SHA512 | | | 01:58:31 | | | | | 1234567890 | 2009-02-13 | 000000000273EF07 | 89005924 | SHA1 | | | 23:31:30 | | | | | 1234567890 | 2009-02-13 | 000000000273EF07 | 91819424 | SHA256 | | | 23:31:30 | | | | | 1234567890 | 2009-02-13 | 000000000273EF07 | 93441116 | SHA512 | | | 23:31:30 | | | | | 2000000000 | 2033-05-18 | 0000000003F940AA | 69279037 | SHA1 | | | 03:33:20 | | | | | 2000000000 | 2033-05-18 | 0000000003F940AA | 90698825 | SHA256 | | | 03:33:20 | | | | | 2000000000 | 2033-05-18 | 0000000003F940AA | 38618901 | SHA512 | | | 03:33:20 | | | | | 20000000000 | 2603-10-11 | 0000000027BC86AA | 65353130 | SHA1 | | | 11:33:20 | | | | | 20000000000 | 2603-10-11 | 0000000027BC86AA | 77737706 | SHA256 | | | 11:33:20 | | | | | 20000000000 | 2603-10-11 | 0000000027BC86AA | 47863826 | SHA512 | | | 11:33:20 | | | | +-------------+--------------+------------------+----------+--------+ ``` ### Health Score 31 — LowBetter than 68% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity36 Limited adoption so far Community9 Small or concentrated contributor base Maturity47 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% of commits — single point of failure 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 1837d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/61a77dd5ef7ab0ea6f5244444cc742ea063d6cfb6775d3c86de490d9c9b0f811?d=identicon)[greymich](/maintainers/greymich) --- Top Contributors [![greymich](https://avatars.githubusercontent.com/u/18516701?v=4)](https://github.com/greymich "greymich (6 commits)") --- Tags phpcomposertotpone-time-password ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/greymich-php-totp/health.svg) ``` [![Health](https://phpackages.com/badges/greymich-php-totp/health.svg)](https://phpackages.com/packages/greymich-php-totp) ``` ### Alternatives [jbzoo/composer-diff See what has changed after a composer update. 53888.9k1](/packages/jbzoo-composer-diff)[liborm85/composer-vendor-cleaner Composer Vendor Cleaner removes unnecessary development files and directories from vendor directory. 35342.7k1](/packages/liborm85-composer-vendor-cleaner)[camcima/php-geohash Refactored GeoHash package 1074.0k](/packages/camcima-php-geohash) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)