---
title: "Announcing Key Transparency for the Fediverse"
url: https://daily.dev/posts/announcing-key-transparency-for-the-fediverse-uuqgioxbb
source_url: https://soatok.blog/2025/12/15/announcing-key-transparency-fediverse/
type: article
source: "Dhole Moments"
published: 2025-12-15T14:50:33.450Z
updated: 2025-12-15T14:51:12.657Z
tags: ["php", "cryptography", "fediverse", "activitypub"]
reading_time: 15
upvotes: 0
comments: 0
language: en
---

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# Announcing Key Transparency for the Fediverse

**[Dhole Moments](https://daily.dev/sources/soatok)** · 15 min read · 0 upvotes · 0 comments

## Summary

A reference implementation for a Public Key Directory server is now available, implementing a Key Transparency specification designed to enable secure end-to-end encryption for the Fediverse. The system uses an immutable transparency log to publish public keys, allowing users to verify they're communicating with the intended recipient. The PHP-based server and client SDK are open source but still in v0.1.0 (not production-ready). The project aims to solve key management challenges that have prevented E2EE adoption in ActivityPub-based platforms like Mastodon, where direct messages are currently visible to instance administrators. Future work includes writing SDKs in multiple languages, creating a FASP specification, and eventually implementing full E2EE for Fediverse communications.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://soatok.blog/2025/12/15/announcing-key-transparency-fediverse/>

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 · 0 upvotes · 0 comments

---

Tags: [#php](https://daily.dev/tags/php), [#cryptography](https://daily.dev/tags/cryptography), [#fediverse](https://daily.dev/tags/fediverse), [#activitypub](https://daily.dev/tags/activitypub)

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