this post was submitted on 25 Feb 2026
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Important progress has been made regarding bringing MLS end-to-end encryption to the ActivityPub protocol, with developers already building implementations and providing feedback to a future version of the protocol spec.

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[–] Steve@communick.news 75 points 1 month ago (4 children)

I thought we already had Matrix

[–] MentalEdge@sopuli.xyz 79 points 1 month ago (28 children)

We do.

This is for activitypub DMs.

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[–] ViatorOmnium@piefed.social 15 points 1 month ago* (last edited 1 month ago)

And XMPP before it, even for e2ee messaging.
At least this is a slightly different use case.

[–] confuser@lemmy.zip 12 points 1 month ago (3 children)

Matrix is decentralized but its not federating in a way like activity pub is doing

[–] Steve@communick.news 25 points 1 month ago* (last edited 1 month ago) (4 children)

ActivityPub isn't the only way to federate.
It's federating the same way email does. Anyone can spin up their own server. And if they want anyone can spin up their own software. That's what federation is. Different servers agreeing on how to communicate with each other.

[–] Lost_My_Mind@lemmy.world 8 points 1 month ago

What??? I thought being part of Federation meant being part of the WORLD WRESTLING FEDERATION!

OOOOH YEAH, SEE I'M ALWAYS THINKIN THINKIN THINKIN, YEAH. AND WHEN IT'S ALL SAID AND DONE, WE DO THING IN THE RING! DIG IT! THE TOWER OF POWER TOO SWEET TO BE SOUR, FUNKY LIKE A MONKEY! OOOOOOH YEEEAAAHHHH!!!!

Pomp and circumstance plays over the house speakers

ELIZABETH!!!

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[–] MentalEdge@sopuli.xyz 12 points 1 month ago (4 children)

How so? It's certainly very similar.

The matrix protocol enables federation between different instances running different homeservers between users using different clients.

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[–] RIotingPacifist@lemmy.world 6 points 1 month ago (5 children)

What do you mean?

And what benefit justifies yet another standard?

[–] VaalaVasaVarde@sopuli.xyz 9 points 1 month ago (3 children)

In this day and age we need as many open source e2e encrypted alternatives as possible.

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[–] HailHydra@infosec.pub 9 points 1 month ago

Matrix is a poor choice from a cryptographic perspective. With some serious issues historically (some of which are still unfixed to this day), and an extremely poor response to disclosures.

https://soatok.blog/2026/02/17/cryptographic-issues-in-matrixs-rust-library-vodozemac/

[–] Lost_My_Mind@lemmy.world 46 points 1 month ago (2 children)

Well now this sounds interesting. And I assume it's open source?

[–] Successful_Try543@feddit.org 9 points 1 month ago

It seems so, as the project (Emissary) is using the GNU Affero GPL.

https://github.com/EmissarySocial/emissary

[–] A_norny_mousse@piefed.zip 5 points 1 month ago* (last edited 1 month ago)

🤯 That gave me pause. What made you ask (would non-FOSS even be an option for anything ActivityPub)?

[–] iltg@sh.itjust.works 40 points 1 month ago* (last edited 1 month ago) (7 children)

this is misleading and sensationalistic. if emissary implements e2ee, it's not "e2ee for the fediverse", it's " e2ee for emissary users". did mastodon talk about e2ee? did lemmy?

also the MLS draft (supposedly "better than signal ") proposes for trusted key exchange either " trust the server" (lmao), use a centralized key authority (wow) or have users manually verify their keys out of band (so basically use matrix to assure your chat is encrypted). source: https://swicg.github.io/activitypub-e2ee/architectural-variations.html#validating-end-to-end-encryption

fedi devs need to stop clickbaiting, and fedi users should learn a bit more about their protocol to avoid getting misled this way

[–] Abundance114@lemmy.world 21 points 1 month ago (2 children)

I felt like a 90 year old grandma reading this.

[–] gajahmada@awful.systems 9 points 1 month ago* (last edited 1 month ago) (2 children)

You and me both.

But after pondering the orbs for a minute I think they're saying, that it's just Emissary trying to get E2EE working and not Fediverse as a whole.

And they follow with some objection with the proposed draft. I can only comment on the 3rd one, it basically mean you need other channel of communication to manually compare fingerprint (i.e via Matrix/Signal) to make sure your activities on Emissary is actually encrypted, maybe lol.

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[–] hperrin@lemmy.ca 33 points 1 month ago (1 children)

I have a bit of an issue with the title, considering federated end to end encrypted messaging has existed since, at the latest, 1991.

[–] realitista@lemmus.org 4 points 1 month ago (1 children)

What's the messaging protocol?

[–] sefra1@lemmy.zip 14 points 1 month ago

Pgp is protocol agnostic, you can use it over email, xmpp, irc... Over pretty much anything that supports plugins.

It's usually used for email tho.

[–] 9tr6gyp3@lemmy.world 17 points 1 month ago

MLS will eventually be included in all messengers.

It was initially introduced by Wire as an RFC, but they fumbled the federation by making it an enterprise only feature. Because of that, other messengers will do the federating for them. iMessage, Google Messenger, Matrix, and Germ DM (Bluesky) do or partly have it implemented.

[–] dhruv3006@lemmy.world 12 points 1 month ago

We should always have more alternatives to chose from - good to see so many players.

[–] fubarx@lemmy.world 9 points 1 month ago
[–] doug@lemmy.today 9 points 1 month ago (2 children)

Finally I can discuss my scat fetish with my fellow scat enthusiasts away from the prying eyes of the NSA!

Nyeh-heh heh heeh!

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[–] vogi@piefed.social 7 points 1 month ago* (last edited 1 month ago)

Unable to decrypt this message

[–] helvetpuli@sopuli.xyz 6 points 1 month ago

@benpate@mastodon.technology that's amazingly quick work after just under four weeks. I'm looking forward to the result.

[–] lambalicious@lemmy.sdf.org 6 points 1 month ago (1 children)

Fake journalists not even bothering to google that XMPP exists #10496839485.

[–] ZombieMantis@lemmy.world 12 points 1 month ago

This is about implementing E2EE directly into ActivityPub, so that has nothing to do with this.

[–] RIotingPacifist@lemmy.world 6 points 1 month ago (5 children)

Why?

What benefit does this have over Signal/Matrix?

The article just says "improvements".

[–] blah3166@piefed.social 9 points 1 month ago (4 children)

why? because it would be cool if only intended recipients are able to view sent messages.

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[–] chocrates@piefed.world 5 points 1 month ago

from what i can tell, mls supports much larger group chats (50k users) whereas i assume signal would struggle.

my chat of 10 people i signal seems just as secure, if i am reading right.

[–] knova@infosec.pub 4 points 1 month ago

One benefit is that Signal controls all the infrastructure and some people do not like that. Sure, you could also spin up a Matrix home server, but that isn’t an ideal solution for everyone either. Some people want to do messaging via their existing ActivityPub infrastructure and that’s OK.

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[–] Astrius@lemmy.ml 5 points 1 month ago

Major League Soccer messaging? Let’s goooo

[–] BladeFederation@piefed.social 5 points 1 month ago

Let's gooooooo

[–] odama626@lemmy.world 4 points 1 month ago (1 children)
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