Katzenpost: Anonymous Communication for Everyone

Advanced mixnet protocols for secure, private, and anonymous online communication.

Katzenpost is a free and open-source software project advancing anonymous communication through innovative mixnet protocols. As the world’s first post-quantum mixnet, Katzenpost integrates cutting-edge cryptography to ensure future-proof privacy. Our rigorous security design includes the first-ever comprehensive threat model for a mixnet, setting a new standard for secure, resilient online communication.

Presentations

Watch recent and past presentations about Katzenpost and mixnet designs.

Admin Guide

Comprehensive documentation on running Katzenpost servers, including a guide for local Docker mixnet setups.

Threat Model

Check out our threat model document—it lays out the security assumptions and attack scenarios we consider while designing and improving the mixnet. Available as HTML or PDF.

Literature Review

An overview of published research that shapes our design decisions, focusing on theoretical foundations.

Our Team

Meet the world-class experts behind Katzenpost.

Source Code

Access Katzenpost source code on GitHub to explore, contribute, or integrate with our project.

Our Funders

Past and present funders of the Katzenpost free software project.