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ryan

@rford.bsky.social

i like computers and languages and some other things cogsci enjoyer 🇺🇸->🇩🇪 https://github.com/distractedm1nd

30 Posts53 Follower 21 Folgt

ePrint Updates @eprint.ing.bot · 12mo ago

Whom do you trust? PRISM: Lightweight Key Transparency for All (Sebastian Pusch, Ryan Quinn Ford, Joachim von zur Gathen, Alexander Markowetz) ia.cr/2025/2026

Abstract. End-to-end encrypted (E2EE) messaging platforms serving hundreds of millions of users face a fundamental vulnerability: users must trust service providers to distribute authentic public keys. This problem creates opportunities for sophisticated man-in-the-middle attacks and surveillance. While key transparency systems promise to eliminate this trust requirement, existing solutions have failed to achieve practical deployment due to prohibitive cost in computation and bandwidth, and inadequate infrastructure. Our main innovation is the integration of a zero-knowledge virtual machine to create a “rollup” architecture on a third-party data availability layer via which every user automatically checks the integrity of the whole key directory. Counterintuitively, this approach yields substantial performance improvements over custom-built zk proof circuits and enables verification of targeted policies within the cryptographic proof system. We introduce PRISM, the first practically deployable key transparency protocol that eliminates hidden backdoors in E2EE services through automatic, trust-minimized verification. Our system advances beyond previous approaches by proving not just structural validity of key directory updates, but their semantic correctness as well. Previous solutions require some form of manual interaction by the user. This burden prevented wide spread adoption. Our solution however eliminates user intervention entirely. This paper is intended as an overview rather than an exhaustive specification. Our implemented system already integrates additional components whose full complexity exceeds the scope of this short presentation.

ryan @rford.bsky.social · 2y ago

apple watches are not ensouled

ryan @rford.bsky.social · 2y ago

anybody need some minion air fresheners

ryan @rford.bsky.social · 2y ago

fine i’ll watch severance

ryan @rford.bsky.social · 2y ago

i’m uninstalling signal some dude keeps reading all of my messages in every chat. “Mark read” WHO TF IS MARK??

ryan @rford.bsky.social · 2y ago

this email trail is just insane. I request documents for 🇩🇪 citizenship. (2 mo later) i remind them of my email (1 mo later) please give us your birthday and address (i reply immediately) (5!! mo later) please fill this out and show up at this date **cancels 3 days before appt** ????

ryan @rford.bsky.social · 2y ago

need to finally get off the hellscape of twitter, the vibes are so far off

ryan @rford.bsky.social · 2y ago

those who forget past rizzlessness are doomed to repeat it

ryan @rford.bsky.social · 2y ago

having to explain evangelion to my psychoanalyst was not on my 2024 bingo card

ryan @rford.bsky.social · 2y ago

we’re so back

ryan @rford.bsky.social · 4y ago

guy who can explain donnie darko

ryan @rford.bsky.social · 4y ago

you know it’s gonna be a shit day when you get to the office and pull out your headphones and… they aren’t there

ryan @rford.bsky.social · 4y ago

lil monkey hands

ryan @rford.bsky.social · 4y ago

has anyone tried gpt-4 as a language learning assistant yet? i feel like people will probably feel more comfortable talking to an AI than to a real human as a beginner in a new language. just have to prompt it to be a good conversationalist and to correct grammar when wrong

ryan @rford.bsky.social · 4y ago

ah shit, here we go again