Excited to share that our paper on Sender Keys: "WhatsUpp with Sender Keys? Analysis, Improvements and Security Proofs" has been accepted at ASIACRYPT! Grateful to my incredible coauthors Daniel Collins and David Balbás for their hard work. 🧵

Announcing PQXDH! The first step in post-quantum resistance for the Signal Protocol, PQXDH protects your Signal calls & chats from potential future threats of breakthroughs in quantum computing. And it's already rolling out to Signal clients everywhere. signal.org/blog/pqxdh/

I am happy to announce that Cameroon 🇨🇲 will be hosting Africacrypt 2024 (africacrypt2024.com) in Douala. Save the dates Jul 10 - Jul 12 2024. The submission deadline is Feb 16 2024. Thanks for sharing 🔄 🔄🔃🔃

David Balbás presenting our paper on Sender Keys at #Asiacrypt in Guangzhou. Timely, as Facebook Messenger adopts the Sender Keys protocol. Joint work with David Balbás and Daniel Collins. [Paper: ia.cr/2023/1385] [Messenger update: about.fb.com/news/2023/12/d…]

⬆️ 4 weeks left till the deadline ! Don't miss your chance to submit to Africacrypt 2024. Don't miss your chance to visit a sub-saharan African country. With à bit of luck, you may meet Francis Ngannou, Samuel Eto'o or Roger Mila in the streets in DLA. africacrypt2024.com

The full version of our paper on post-quantum X3DH key exchange, accepted at USENIX Security 2024, is now online! Our protocol K-Waay uses a Frodo key exchange-based split-KEM rather than ring signatures and is therefore very fast. ia.cr/2024/120 Ngoc Khanh Nguyen Serge Vaudenay

Hey, did you miss the Santa Barbara deadline? Did you wake up after the submission deadline this morning? No worries! Africacrypt 2024’s submission deadline has been postponed to March 1st 2024 anywhere on earth. Visit africacrypt2024.com for more.

Dear Crypto Bubble, I'm looking for motivated applicants for my PhD position: - Research on privacy preserving messaging - Fully funded - Interdiscipl. research group - Joint supervision by PI team - Apply ≤ April 10 - Starts in October - Nuremberg is nice & a climbing paradise

I had hoped that the EU was going to abandon its plans for mass content scanning. But apparently the EU Presidency has made some meaningless changes, and now the bill looks set to pass in June. netzpolitik.org/wp-upload/2024…

Huge congrats to Dr. Daniel Collins for defending his PhD with flying colours! 🎉 Your work on secure messaging has been awesome and it's been a pleasure collaborating. Keep up the great work!

I co-authored a new open letter signed by more than 270 scientists from 33 countries warning for the risks of the modified CSAM (child sexual abuse) regulation proposed by the Belgian presidency. #chatcontrol csa-scientist-open-letter.org A🧵1/10

Africacrypt 2024: the keynote speakers are here: L De Feo @[email protected] @bsky.defeo.lu, Betül Fatma Durak and AtsukoMiyaji !! Don't forget to book your ticket for the event at : africacrypt2024.com. Early registration runs till May 31st. See you in Douala 🎉🎉🎉🎉!

[Revised] Juggernaut: Efficient Crypto-Agnostic Byzantine Agreement (Daniel Collins and Yuval Efron and Jovan Komatovic) ia.cr/2024/1601

Verifying myself: I am dcol97 on Keybase.io. qYkqoWY8IUFIzp_No118uZ23RePydKH2B3Bt / keybase.io/dcol97/sigs/qY…

[New] On the Tight Security of the Double Ratchet (Daniel Collins and Doreen Riepel and Si An Oliver Tran) ia.cr/2024/1625

this is what it feels like

This is an amazing paper by Leah Namisa Rosenbloom on extending the dialogue of 'The Moral Character of Cryptographic Work': eprint.iacr.org/2024/1602.pdf

Imma makin twitter threads now I guess. New paper! With Jovan Komatovic Daniel Collins. Juggernaut is a protocol that enjoys all the benefits that cryptography offers to consensus, while remaining secure even if this crpytography is broken! (1/n) eprint.iacr.org/2024/1601

ICYMI: Encrypted messaging app developer moves out of Australia after police visit employee’s home alecmuffett.com/article/110621 #EndToEndEncryption #australia

Our paper on our crypto-agnostic consensus protocol Juggernaut was accepted at Eurocrypt 2025! Check out Yuval's thread and our paper for more details.