A compromised server would allow the server to man-in-the-middle all new connections (as in, if Alice and Bob have never talked to each other before, the Server/Eva can MITM the x3dh key exchange and all subsequent communication). That’s why verifying your contact’s signatures out-of-band is so important.
(And if you did verify signatures in this case, then the issue would immediately be apparent, yes.)
Edit: I was wrong. See below.
That’s why safewords should be passphrases! /s
Hold on, actually no, not /s
Ich glaube ich hatte einfach Glück: bin vor ca. 8 Monaten als Software Engineer gestartet, kurz nach Abschluss vom MA Informatik. 100% remote und ziemlich zufrieden mit der Vergütung.
Glück sage ich aber vor allem deshalb, weil mein jetziger Arbeitgeber das einzige Vorstellungsgespräch war, was ich hatte. Ansonsten nur eine negative Rückmeldung zur Bewerbung, eine Einladung zum Bewerbungsgespräch 4 Monate später (lol) und sonst gar nix.
Funny, I’ve also already read that 😄 Good blog and article.
It’s a very steep curve to start, with some additional minor steep parts along the way, but it’s not a long curve. Once you got the core concepts and the basic language constructs, you’ve learned most of what you’ll ever need.
Two nice resources: search.nixos.org is super handy, and you can search GitHub with language:nix and a search term to get tons of examples from other people.
Oh, and nix and just is actually a pretty common combo!
Yep, exactly.
To be fair, if you use Debian, Arch, Fedora,… long enough, you also know how to tweak your machine for every purpose. In Nix, it’s just somewhat of a self-fulfilling prophecy, because you have to know how to tweak your system to achieve… anything, and then it’s the same tweaking mechanics for every other purpose as well.
My Steam Deck also runs NixOS.
Because this way I can much more comfortably configure it, plus everything game related I automated through nix for my Desktop (e.g. mod installs, reShade config,…) immediately and without any extra steps also applies to the Steam Deck.
Yes. Everything is NixOS. Because it’s perfect for everything.
Ha, thanks, I’d already read that. And I do, mostly, agree; the OMEMO implementation is not great both from the security perspective discussed in the post, as well as the UX (not being able to decrypt old messages on new devices at all).
That being said, I primarily want a selfhosted, federated messenger which also takes privacy and security seriously, and at least for the former, XMPP is really refreshingly good.
Ugh. I’ve always liked Matrix (and was not bothered too much by the metadata leaks because my home server was not federated anyways), but after noticing some issues and finally reading up on the actual protocol spec a couple of weeks ago… oof. Yeah. No.
Set up XMPP for now. Works really well and the protocol seems so much saner. Unfortunately, it too has some annoyances that are unacceptable to me in the long term. I’m this close to saying “fuck it” and wasting the next couple of years of my life on a new protocol that no one is gonna use. (Cue the XKCD here.)
Not to dimish your work at all, but: the Sonarr upgrades absolutely do work.
Ah, too bad. IMO better clients would make it drastically easier to convince people to switch.
Hm, I can create groups (also with muc), and the other members are added, but writing a message triggers “x left the group” for everyone. Dunno. Probably something trivial I overlooked. But honestly… Weather is too good today to be bothered 😄
Ah, I already had a TURN/STUN coturn server set up for matrix and jitsi, so it was just a matter of telling prosody about that. So I cheated a little I guess 😄 Here is my full config for that, in the unlikely event that you’re using NixOS.
Very cool!
Re: the backup / restore of state in NixOS: I found myself writing the same things over and over again for each VM/service, so finally wrote this wrapper module (in action e.g. here for Jellyfin), which confgures both the backup services and timers, as well as adding a simple rsync-restore-jellyfin command to the system packages. In case you find this useful and don’t already have your own abstractions, or a sufficiently different use case 😄
Nice, same! Was also really positively surprised by how great the Android app(s) for XMPP feel.
Only thing not working yet for me is group chat creation. Oh well. Maybe this weekend.
On the other hand though, voice and video calls have worked flawlessly.
Awesome! And good job, looks great!
Why are there no screenshots in the README.
Yes I know I can just install the app, but for an app that primarily seems to define itself by its UI improvements over the established competitor, the screenshots are the deciding factor in the question “Should I download and install this?”, and no screenshots defaults to “no”.
Ich fühl das so sehr. Hab über die letzten Wochen ne nicht sonderlich kurze ZuTun Liste angelegt für Dinge in der Wohnung, im Garten, und persönliche Dinge, explizit um die diese Woche abzuarbeiten.
Das tolle Wetter hat da perfekt rein gespielt, und außer für die Arbeit war ich diese Woche quasi gar nicht am PC (was extrem untypisch ist für mich).
Lange nicht so wohlgefühlt und so gute Laune gehabt.
Huh - you’re right. I went back to Signal’s X3DH spec because I was sure I was right, but it seems I misremembered how the “prekey bundles” work: Users publish these to the server, allowing (in my original assumption) for the server to just swap them out for a server/attacker-controlled key bundle for each Alice and Bob.
However, when Alice wants to send Bob an initial message and she gets a forged prekey bundle, Bob will simply not be able to derive the same key and communication will fail, because Bob knows what his SPK private key is, while the server only knows the public key.