Warmwasserwerfer Blog

Category: xmpp

  • Summer of Code: Polishing the API

    The third week of coding is nearing its end and I’m quite happy with how my project turned out so far. The last two days I was ill, so I haven’t got anything done during that period, but since I started my work ahead of time during the boding period, I think I can compensate…

  • Summer of Code: Advancing the prototype

    It has been a week since my last blog post, so it is time for an update. I successfully tested my OX client against an experimental Gajim plugin written by Philip Hörist. Big thanks for his help during the testing 🙂 My implementation can now backup the users secret key in a private PubSub node,…

  • Summer of Code: Bug found!

    BouncyCastle The mystery has been solved! I finally found out, why the OpenPGP keys I generated for my project had a broken format. Turns out, there was a bug in BouncyCastle. Big thanks to Heiko Stamer, who quickly identified the issue in the bug report I created for pgpdump, as well as Kazu Yamamoto and…

  • Summer of Code: Quick Update

    I noticed that my blog posting frequency is substantially higher than last year. For that reason I’ll try to keep this post shorter. Yesterday I implemented my first prototype code to encrypt and decrypt XEP-0374 messages! It can process incoming PubkeyElements (the published OpenPGP keys of other users) and create SigncryptElements which contain a signed…

  • Summer of Code: The Plan. Act 1: OpenPGP, Part Two

    The Coding Phase has begun! Unfortunately my first (official) day of coding was a bad start, as I barely added any new code. Instead I got stuck on a very annoying bug. On the bright side, I’m now writing a lengthy blog post for you all, whining about my issue in all depth. But first…

  • Summer of Code: Small steps

    Yesterday I got my first results encrypting and decrypting OpenPGP messages using PGPainless, my fork of bouncy-gpg. There were some interesting hurdles that I want to discuss though. GnuPG As a first step towards working encryption and decryption, I obviously needed to create some PGP keys for testing purposes. As a regular user of OpenPGP…

  • Summer of Code: The plan. Act 1: OpenPGP

    OpenPGP OpenPGP (know as RFC4880) defines a format for encrypted and signed data, as well as encryption keys and signatures. My main problem with the specification is, that it is very noisy. The document is 90 pages long and describes every aspect an implementer needs to know about, from how big numbers are stored, over…

  • Summer of Code: Preparations

    During preparations for my GSoC project, I’m finding first traces left by developers who dealt with OpenPGP before. It seems that Florian was right when he noted, that there is a lack of usable higher level Java libraries as I found out when I stumbled across this piece of code. On the other hand I…

  • Another Summer of Code with Smack

    I’m very happy to announce that once again I will participate in the Summer of Code. Last year I worked on OMEMO encrypted Jingle Filetransfer for the XMPP client library Smack. This year, I will once again contribute to the Smack project. A big thanks goes out to Daniel Gultsch and Conversations.im, who act as…

  • More XEPs for Smack

    I spent the last weekend from Thursday to Sunday in Brussels at the XSF-Summit (here is a very nice post about it by JCBrand) and the FOSDEM. It was really nice to meet all the faces belonging to the JIDs you otherwise only see in the MUCs or on GitHub in real life. There was…