Natanael
Cryptography nerd
Fediverse accounts;
Natanael@slrpnk.net (main)
Natanael@infosec.pub
Natanael@lemmy.zip
Lemmy moderation account: @TrustedThirdParty@infosec.pub - !crypto@infosec.pub
Bluesky: natanael.bsky.social
- 0 Posts
- 53 Comments
Natanael@infosec.pubto Fediverse@lemmy.world•Our fediverse conversations are gonna have the context they have been missing!English2·15 days agoThe post you replied to comes from a different instance than your own, so does my answer. When you’re logging into your instance, the view of their and mine posts are both remote to you.
Sometimes in Mastodon you’ll only see the specific post that you’re opening a link to directly, not other posts before or after. This tries to fix that.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·20 days agoA discoverable non-banned account. Not from “ghost accounts”. If a server creates a massive amount of accounts to use them to vote, you can see that a small server has a disproportionate amount of registered accounts too, which probably will be otherwise inactive. Then you can reject votes from that server.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·20 days agoThe very very short TLDR is that anonymization is very hard, but there’s auditable cryptographic voting schemes which preserves anonymity by using anonymous cryptographic commitments and one of a bunch of different techniques to count encrypted votes (homomorphic encryption, threshold encryption, etc).
You could set it up so you know which server each set of votes comes from but not which users on the server. You could also make it prove each vote comes from one real account and that no account voted twice. You could even make use of commitments plus ZKP to prove banned accounts can’t vote!
It sounds complicated because it is complicated. And somewhat inefficient. But it’s possible. And it would be fully encrypted and anonymous voting.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·20 days agoThey’re implementing E2E encrypted social stuff. Voting privacy and encryption is linked.
Especially when you have users across multiple servers and both want voting privacy AND being able to deal with vote manipulation. You need stuff like pseudonymous commitments per account attested to by the hosting instance, etc. The only thing that’s simpler but still private is having instances just digitally sign a total vote tally, which also means you can’t detect vote manipulation on other servers at all.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·21 days agoIt’s doable with E2E encryption, but lots of social stuff in large groups requires coordination which is incredibly hard to with a server that has no knowledge of what the data is because it can’t index anything, etc.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·22 days agoCurrently Lemmy is leaking likes via the API even if they only should be available to the user’s host and community host server
Natanael@infosec.pubto ADHD memes@lemmy.dbzer0.com•I think this post might indeed be an example of one of those situations as described in the post, perhaps indeedEnglish3·22 days agohttps://quoteinvestigator.com/2012/04/28/shorter-letter/
If I Had More Time, I Would Have Written a Shorter Letter
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English2·23 days agoOn Mastodon, your instance doesn’t receive posts until somebody on your instance interacts with the account posting it (following the poster, browsing directly to the post, etc).
Feeds with recommendations requires fetching stuff in advance to not be slow and janky. Basically the feed service would need a bot account on your instance and retrieving all popular posts, given the current architecture. Having thousands of these bots across every instance do this would cause a significant performance hit on smaller Mastodon instances when one of their users posts something popular. So you need something different, like a server plugin where the bot fetches the content once and tells all participating Mastodon servers about their cached copy, so they don’t all have to hit the hosting instance. But that’s a security risk with the Mastodon design.
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English2·23 days agoDoing it this way is why small instances gets hammered when a user’s post goes viral.
And as for moderation bluesky also carries information with the top post from the post author and allows hiding replies too, etc. This gets enforced on the appview side, so the posting user’s PDS is unscathed if it goes viral.
Bluesky is built to assume a handful of big relay (remember that a relay can merge in contents of another) and a bunch of appview and a ton of PDS servers, feed generators, moderation labelers, etc.
Realistically, the relay network will likely end up voluntarily adopting a tree topology - hobbyist communities would run small relays bundling all activity from members’ PDS servers, then a larger relay in front gathers everything from a ton of smaller relays and makes it available to appviews
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·23 days agoZeppelin.social is 3rd party appview and you can host your own
https://whtwnd.com/bnewbold.net/3lo7a2a4qxg2l
A Full-Network Relay for $34 a Month
Add using DID:Web and you’re now fully self hosted
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English5·23 days agoNo it doesn’t. If other people on bluesky servers want to see your content then obviously it will go through bluesky servers, but if you connect to a 3rd party relay and use a separate appview like zeppelin.social and use DID:Web for account ID then nothing involving the bluesky servers was used and it still behaves like native
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English5·23 days agoThey fixed the large cache needed to validate all traffic on your own relay. Now the cost is mostly bandwidth and whatever CPU power you want to spend on indexing
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English3·23 days agohttps://whtwnd.com/bnewbold.net/3lo7a2a4qxg2l
A Full-Network Relay for $34 a Month
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English2·23 days agoThe PLC registry is the only such thing, and also it’s not a blocker because you can use the DID:Web scheme to manage your own account identity
Natanael@infosec.pubto Fediverse@lemmy.world•How decentralized Bluesky is compared to the Fediverse.English1·23 days agoContent addressing means you can make your instance pull from both their relay and the bluesky relay and trivially merge threads and views without consistency issues, so that’s solvable.
The bigger issue is all those other regular users who doesn’t, and still get confused (unless they manage to pick a client app that does it for them)
The nearest church choir gets those