Warmwasserwerfer Blog

Category: xmpp

A Simple OpenPGP API

In this post I demonstrate how easy it is to perform OpenPGP operations in your application by using the SOP API.

October 10, 2021
PGPainless 0.1.0 released

Photo by Markus Winkler on Unsplash

After two years and a dozen alpha versions I am very glad to announce the first stable release of PGPainless, a library that makes using OpenPGP fun again!

September 1, 2020
Install Jitsi-Meet alongside ejabberd

Photo by Drew Beamer on Unsplash

I got Jitsi Meet working with my ejabberd installation. This is how I did it. #xmpp #jitsi #jitsimeet #meeting #videoconference #conference

March 16, 2020
OMEMO Specification Sprint

Photo by Sebastian Pena Lambarri on Unsplash

The past weekend some members of the XMPP community gathered in Düsseldorf to work on the next iteration of the OMEMO End to End Encryption Specification. All of us agree that the result – version 0.4 of XEP-0384 – is a huge step forward and better than ever!

March 10, 2020
How to Implement a XEP for Smack.

Photo by NASA on Unsplash

Many (80+ and counting) XMPP Extension Protocols (XEPs) are already implemented in Smack. Today I want to bring you along with me and add one more 🙂 #xmpp #smack #protocol #development

February 25, 2020
Smack: Some more busy nights and 12 bytes of IV

Photo by Sven Mieke on Unsplash

In the last months I stayed up late some nights, so I decided to add some additional features to Smack.

February 17, 2020
Re: The Ecosystem is Moving

Moxie Marlinspike gave a talk at 36C3 that misrepresented decentralized systems. This is my opinion regarding his arguments.

December 29, 2019
Pitfalls for OMEMO Implementations – Part 1: Inactive Devices

Person holding a magnifying glass onto a text book

In this post I want to discuss, what can go wrong when implementing OMEMO encryption and how the pitfalls can be avoided.

December 13, 2019
On “Clean Architecture”

Photo by Alex wong on Unsplash

I’m currently reading Clean Architecture by Robert C. Martin. These are my thought so far.

November 3, 2019
Closer Look at the Double Ratchet

In this post I try to explain the Double Ratchet Algorithm that drives the cryptography behind OMEMO and Signal. This is the second part of my series about the crypto behind OMEMO.

April 15, 2019