Good morning, snowy Brussels! Despite the dangers #FOSDEM starts. Let's now go the "ethics and blockchain" session.

Mitchell Baker speaking without slides (it seems there is a technical glitch). #FOSDEM

Now, Deb Nicholson on "Blockchain: The Ethical Considerations" (first slide: a man working on a giant strawberry)

(I'm disappointed: this big room - Janson - is not full.)


Very good talk of Tom Hacohen about the pleasures of developing a really serious privacy-oriented application. #FOSDEM

* everything is done on the client : changing the protocol requires to upgrade all clients
* data is encrypted client-side, the developer never sees the data, so cannot debug data-related issues.
#privacy #endToEndEncryption #FOSDEM

Now, a guy with a french accent on stage. "#GDPR and the right to data portability" #FOSDEM

RFC 171 on screen (about transfer of datas between centralized silos). #RFC #FOSDEM

Now, Veronika Nad on #journalism, and how it could benefit from free software. #FOSDEM

(The room is not full, which is very rare for the Decentralized Internet and Privacy devroom.)

Now, panel about #ActivityPub at #FOSDEM. Christopher Webber, Gualter Barbas Baptista "How many people in the room have read the specification?" [Several hands, including mine] "Wow, that's a lot for a specification."

"What interested you in #ActivityPub?"

"It is simple to understand"

"Because it is used in #Mastodon"

"It is about distributing power"


"#ActivityPub has a good model as a foundation: everything is actors sending messages to each other."

With such vague description, any protocol is ActivityPub...


"It would be cool to have a documentation of 'MastodonPub' [the actual protocol(s) needed to work with Mastodon] but we must not forget that #ActivityPub could be used for very different things, too." #FOSDEM

By the way, are there women working on #ActivityPub? The panel seems, at first glance, be all-male. #FOSDEM

#ActivityPub has a client-to-server protocol but nobody uses it, every ActivityPub server has its API. Is it a bad thing?

"Use cases are too different [Mastodon for chatting, Funkwhale to listen music], a common client would lead to a poor user experience."


"What I don't like in #ActivityPub is that it uses #JSON." Troll incoming, flame war ahead. #FOSDEM

What is needed for the fediverse to talk to alice@7j3ncmar4jm2r3e7.onion? Webfinger and ActivityPub can work over Tor but most Mastodon instances cannot talk Tor. #FOSDEM

Philip Homburg certifies #DNS results from his application, with #getdns.
He starts with a comparison with X.509 (1) with X.5909, you need to trust a lot of other parties 2) if the attacker controls DNS,it controls X.509 anyway). #DNSSEC #FOSDEM

Speaking of #getdns, a volunteer to write a monitoring plugin with getdns?

Existing #DNS plugins call dig or nslookup :-(


@bortzmeyer chic :) ça fait maintenant 5 ans que j'ai mis ça en place dans le puppet d'Octopuce : un bout de script qui prend les clés SSH des serveurs et les publie dans le DNS :

ça + VerifyHostKeyDNS yes
dans ssh_config = <3

@vincib L'orateur a bien expliqué pourquoi 'VerifyHostKeyDNS yes' était un no-op :-)


@bortzmeyer ah, tu veux dire qu'il te demande confirmation quand mĂȘme ? oui, c'est pas 100% trust, mais j'obtiens ça sur une nouvelle machine :

debug1: found 3 insecure fingerprints in DNS
debug1: matching host key fingerprint found in DNS
The authenticity of host ' (2001:67c:288::90)' can't be established.
ECDSA key fingerprint is Matching host key fingerprint found in DNS.
Are you sure you want to continue connecting (yes/no)?

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@vincib Le mot-clé dans le message est 'insecure'. L'orateur vient de dire qu'il avait envoyé un patch, qui n'a pas été intégré.

@vincib @bortzmeyer il fait la vérification mais il ne fait pas de validation DNSSEC du tout. Il faudrait mettre une variable d'environnement (faut voir dans le code de ldnsà

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