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[Utility & Helpers](/categories/utility) 4. / 5. fedi-e2ee/pkd-server ActiveProject[Utility & Helpers](/categories/utility) fedi-e2ee/pkd-server ==================== v0.8.0(2mo ago)2111[2 issues](https://github.com/fedi-e2ee/pkd-server-php/issues)ISCPHPPHP ^8.4CI passing Since Dec 15Pushed 2mo ago2 watchersCompare [ Source](https://github.com/fedi-e2ee/pkd-server-php)[ Packagist](https://packagist.org/packages/fedi-e2ee/pkd-server)[ RSS](/packages/fedi-e2ee-pkd-server/feed)WikiDiscussions main Synced today READMEChangelog (10)Dependencies (51)Versions (24)Used By (0) Fediverse Public Key Directory Server Reference Implementation ============================================================== [](#fediverse-public-key-directory-server-reference-implementation) [![CI](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/ci.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/ci.yml)[![Psalm](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/psalm.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/psalm.yml)[![PHPStan](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/phpstan.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/phpstan.yml)[![Psalm](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/semgrep.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/semgrep.yml)[![Style](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/style.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/style.yml)[![Fuzzing](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/fuzz.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/fuzz.yml)[![Mutation Testing](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/infection.yml/badge.svg)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/infection.yml) [![Latest Stable Version](https://camo.githubusercontent.com/092e4b73e72f14faa19a5ec7cf852cc611e78b0e070b9d5de016240a0888d5bf/68747470733a2f2f706f7365722e707567782e6f72672f666564692d653265652f706b642d7365727665722f762f737461626c65)](https://packagist.org/packages/fedi-e2ee/pkd-server)[![License](https://camo.githubusercontent.com/13f2bbb3d579aa3e1e48661748d0d10931d328ff980ff1975d1c25043371c156/68747470733a2f2f706f7365722e707567782e6f72672f666564692d653265652f706b642d7365727665722f6c6963656e7365)](https://packagist.org/packages/fedi-e2ee/pkd-server)[![Reference Docs](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/docs-ref.yml/badge.svg?branch=main)](https://github.com/fedi-e2ee/pkd-server-php/actions/workflows/docs-ref.yml) This is the reference implementation for the server-side component of the [Public Key Directory specification](https://github.com/fedi-e2ee/public-key-directory-specification), written in PHP. **[Project Website: publickey.directory](https://publickey.directory)** What is this, and why does it exist? ------------------------------------ [](#what-is-this-and-why-does-it-exist) The hardest part of designing end-to-end encryption for the Fediverse, as with most cryptography undertakings, is key management. In short: How do you know which public key belongs to a stranger you want to chat with privately? And how do you know you weren't deceived? Our solution is to use **Key Transparency**, which involves publishing all public key enrollments and revocations to an append-only ledger based on Merkle trees. This allows for a verifiable, auditable log of all key-related events, providing a strong foundation for trust. This project, and the accompanying specification, are the result of an open-source effort to solve this problem. You can read more about the project's origins and design philosophy on Soatok's blog, *Dhole Moments*: - [Towards Federated Key Transparency](https://soatok.blog/2024/06/06/towards-federated-key-transparency/) - [Key Transparency and the Right to be Forgotten](https://soatok.blog/2024/11/21/key-transparency-and-the-right-to-be-forgotten/) Installation ------------ [](#installation) Use [Composer](https://getcomposer.org/): ``` composer require fedi-e2ee/pkd-server ``` Documentation ------------- [](#documentation) For detailed information on how to deploy and configure the server, please see the [online documentation](./docs/README.md). License ------- [](#license) This project is licensed under the [ISC License](LICENSE). ### Health Score 41 — FairBetter than 87% of packages Maintenance84 Actively maintained with recent releases Popularity10 Limited adoption so far Community12 Small or concentrated contributor base Maturity52 Maturing project, gaining track record Bus Factor1 Top contributor holds 98.3% 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 Every ~6 days Recently: every ~16 days Total 20 Last Release 75d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/62964206396b67fb3a8985b19dc274f74b1a9232374e189577c0f1388fdc73f2?d=identicon)[soatok](/maintainers/soatok) --- Top Contributors [![soatok](https://avatars.githubusercontent.com/u/8157726?v=4)](https://github.com/soatok "soatok (118 commits)")[![BecomeTheMedia](https://avatars.githubusercontent.com/u/66828596?v=4)](https://github.com/BecomeTheMedia "BecomeTheMedia (1 commits)")[![shleeable](https://avatars.githubusercontent.com/u/17537000?v=4)](https://github.com/shleeable "shleeable (1 commits)") --- Tags activitypube2eeend-to-end-encryptionfediversekey-transparencyphptransparency-log ### Code Quality TestsPHPUnit Static AnalysisPHPStan, Psalm Code StylePHP CS Fixer Type Coverage Yes ### Embed Badge ![Health badge](/badges/fedi-e2ee-pkd-server/health.svg) ``` [![Health](https://phpackages.com/badges/fedi-e2ee-pkd-server/health.svg)](https://phpackages.com/packages/fedi-e2ee-pkd-server) ``` ### Alternatives [tempest/framework The PHP framework that gets out of your way. 2.2k34.4k15](/packages/tempest-framework)[shopware/core Shopware platform is the core for all Shopware ecommerce products. 585.6M574](/packages/shopware-core)[shopware/platform The Shopware e-commerce core 3.4k1.5M3](/packages/shopware-platform)[craftcms/cms Craft CMS 3.6k3.6M3.1k](/packages/craftcms-cms)[flarum/core Delightfully simple forum software. 201.4M2.3k](/packages/flarum-core)[oro/platform Business Application Platform (BAP) 645143.5k115](/packages/oro-platform) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)