Warmwasserwerfer Blog

Author: vanitasvitae

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
Dealing with Colors in lower Android versions

I wrote a little helper class to deal with colors in Android API levels < 26.

June 30, 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
Shaking Hands With OMEMO: X3DH Key Exchange

In this blog post I take a detailed look at how the Extended Triple Diffie-Hellman Key Exchange (X3DH) works. This algorithm is part of the cryptography that drives OMEMO.

April 4, 2019
Another Step to a Google-free Life

Today I * registered an account at mailbox.org * changed my mail address to username+service@mailbox.org on all the services I use * decoupled and deleted YouTube from my Google Account Yay!

March 25, 2019
A look at Matrix.org’s OLM | MEGOLM encryption protocol

In this post I take a closer look on how matrix.org’s crypto protocols olm/megolm compare to the OMEMO protocol.

March 10, 2019
More Languages to the F-Droid Planet?

You may know about Planet F-Droid, a feed aggregator that aims to collect the blogs of many free Android projects in one place. Currently all of the registered blogs are written in English (as is this post, so if you know someone who might be concerned by the matter below and is not able to…

March 3, 2019
I am up to no good.

Photo by Paweł Czerwiński on Unsplash

Yet another German CDU politician wants to ban Tor. How is this party

February 20, 2019