The Book of

The Book of Rhizo

A guide for contributors and advanced users

Introduction

Rhizo is a modular application suite created to facilitate secure communication and group organization. It features end-to-end encryption and is intended to operate locally on your device(s).

This guide is primarily technical and explains the foundational technical choices for Rhizo—the architectural decisions that are unlikely to evolve over time.

Aims and audience

The primary objective of this book is to simplify the process of contributing to, evaluating, and setting up Rhizo for others.

This guide is designed for code contributors who might evaluate or contribute various aspects, including core functionality and security, as well as for power users or administrators configuring Rhizo for their teams and organizations. It is not meant to serve as documentation for (end) users.

If you see something that needs improvement, create a new pull request or a new issue on Codeberg.

Chapters

  1. Overview and Goals How Rhizo works, and what it's for
  2. Security and Threat Model What we plan against
  3. Identity and Keys The root of trust
  4. Messages and Groups The messaging layer
  5. Delivery and Mailboxes The transport layer
  6. Server Anonymized message passing
  7. Open Questions What's not solved yet
  8. Coming Soon What's next