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Peter Schwabe

@cryptojedi.bsky.social

Researcher in cryptographic engineering at MPI-SP.

7 Posts531 Follower 211 Folgt

Deirdre Connolly¹ ² @durumcrustulum.com · 10mo ago

Another @nadiaheninger.bsky.social W

Techmeme@techmeme.com · 10mo ago

Researchers used an off-the-shelf system to compile a vast collection of private data, including T-Mobile users' calls and texts, sent by satellites unencrypted (Wired) Main Link | Techmeme Permalink

Konstantin Macher @pneutig.eupolicy.social.ap.brid.gy · 10mo ago

NEU: Erklärvideo des Max Planck Institute for Security and Privacy zu #Chatkontrolle und #ClientSideScanning. Das Client-Side-Scanning ist ein Angriff auf Verschlüsselung und untergräbt jegliches Vertrauen in private Kommunikation. Die Bundesregierung muss […] [Original post on eupolicy.social]

Karola Marky @yon-juni.bsky.social · 10mo ago

Die #Chatkontrolle soll angeblich Kinder schützen, doch sogar der Kinderschutzbund ist entschieden gegen diese Maßnahme, weil sie unsere Grundrechte einschränkt ohne dabei effektiv zu sein kinderschutzbund.de/stellungnahm...

Stellungnahme zur öffentlichen Anhörung des Ausschusses für Digitales zur “Chatkontrolle” am Mittwoch, 1. März 2023 - Der Kinderschutzbund

Der Ausschuss für Digitales befasst sich am Mittwoch, 1. März 2023, mit dem Thema Chatkontrolle. Die öffentliche Anhörung findet ab 14 Uhr statt. Unsere Stellungnahme finden Sie hier als PDF zum Downl...

kinderschutzbund.de

François Dupressoir @francois.dupressoir.eu · 10mo ago

SUBMIT

Marcus Brinkmann@lambdafu.bsky.social · 10mo ago

This is a friendly reminder that the call for contributed talks to Real World Crypto in Taipei 2026 is open until October 10. We are looking for interesting talks bridging cryptography and its real-world use! Also it’s a great way to meet new people! rwc.iacr.org/2026/contrib...

Nigel Smart @smartcryptology.bsky.social · 10mo ago

FHE.org 2026 Taipei Registrations are open! Registrations are open for the 5th Annual FHE.org Conference on Fully Homomorphic Encryption, colocated with Real World Crypto 2026 in Taipei, Taiwan, on March 8, 2026. Get your tickets now! luma.com/fhe-org-conf...

Fully Homomorphic Encryption

We are a community of researchers and developers interested in advancing homomorphic encryption and other secure computation techniques.

fhe.org

Signal @signal.org · 10mo ago

We are alarmed by reports that Germany is on the verge of a catastrophic about-face, reversing its longstanding and principled opposition to the EU’s Chat Control proposal which, if passed, could spell the end of the right to privacy in Europe. signal.org/blog/pdfs/ge...

signal.org

µASC Conference @uasc.cc · 10mo ago

uASC 2026 will take place on February 3, 2026, in Leuven, Belgium, hosted by KU Leuven. Have you submitted your paper yet? 🤔 Cycle 2 Paper Submission Deadline is November 4, 2025! 👉 uasc.cc #uasc26

@mccurley.bsky.social · 11mo ago

Whoa. 100 responses from speakers at CHES, and only one is presenting by video. Maybe their conference is actually worth going to?

Sofia Celi @claucece.bsky.social · last yr.

Come to the ASCrypto school, affiliated with Latincrypt2025! 🗓️ Sept 29–30 | Medellín, Colombia 👨‍🏫 Learn 𝐦𝐨𝐝𝐞𝐫𝐧 𝐩𝐫𝐨𝐯𝐢𝐧𝐠 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 from top experts 💥 2 days, 3 modules: IVC, STARKs, MPC 👥 With Benedikt Bünz, Sophia Yakoubov, Alan Szepieniec Organised by the amazing Arantxa Zapico and Javier Verbel.

µASC Conference @uasc.cc · last yr.

uASC 2026 will take place on February 3, 2026, in Leuven, Belgium, hosted by KU Leuven. We can't wait to see you next year! Cycle 1 Paper Submission Deadline is July 15, 2025! 👉 uasc.cc #uasc26

Mathy Vanhoef @vanhoefm.bsky.social · last yr.

All papers should publish their code. Help realize this by becoming an artifact reviewer at NDSS'26, apply here: docs.google.com/forms/d/e/1F... You'll review artifacts of accepted papers. We especially encourage junior/senior PhD students & PostDocs to help. Distinguished reviews will get awards!

Self-nomination for the Artifact Evaluation Committee of NDSS 2026

We are looking for members of the Artifact Evaluation Committee (AEC) of NDSS 2026. The Network and Distributed System Security symposium adopts an Artifact Evaluation (AE) process allowing authors t...

docs.google.com

Ruhr-Universität Bochum @ruhr-uni-bochum.de · last yr.

Kinderschutz im Netz bleibt oft Theorie: Informatikerin Veelasha Moonsamy untersuchte mit Kolleg*innen aus Belgien und den Niederlanden rund 70.000 Werbeanzeigen auf Webseiten für Kinder – mit alarmierenden Ergebnissen. 👉 news.rub.de/wissenschaft... (Foto: Roberto Schirdewahn)

Blaue Fläche, auf der in weißer Schrift ein Zitat steht von Veelasha Moonsamy: "Die Werbeanzeigen auf Webseiten für Kinder waren eine bunte Mischung mit einigen alamierenden Inhalten." Daneben in einem Kreis ein Portraitfoto der Forscherin.

Michael Hutter @michutte.bsky.social · last yr.

The CHES 2025 Challenge is coming back with two tracks! 🔬 GE Wars: Test your DL-SCA skills on real-world AES EM traces. 🔧 HACK@CHES'25: Dive into hardware security on a custom OpenTitan SoC. 🔗 ches.iacr.org/2025/challen... #CHES2025 #SideChannel #HardwareSecurity

CHES 2025

Cryptographic Hardware and Embedded Systems

ches.iacr.org

Sabine Oechsner @proofnerd.bsky.social · last yr.

Our paper on attacking concurrent MPC implementations is finally on eprint 🎉 (And @schollster.bsky.social will present it at S&P 2025!) A summary 🧵

ePrint Updates@eprint.ing.bot · last yr.

Rushing at SPDZ: On the Practical Security of Malicious MPC Implementations (Alexander Kyster, Frederik Huss Nielsen, Sabine Oechsner, Peter Scholl) ia.cr/2025/789

Abstract. Secure multi-party computation (MPC) enables parties to compute a function over private inputs while maintaining confidentiality. Although MPC has advanced significantly and attracts a growing industry interest, open-source implementations are still at an early stage, with no production-ready code and a poor understanding of their actual security guarantees. In this work, we study the real-world security of modern MPC implementations, focusing on the SPDZ protocol (Damgård et al., CRYPTO 2012, ESORICS 2013), which provides security against malicious adversaries when all-but-one of the participants may be corrupted. We identify a novel type of MAC key leakage in the MAC check protocol of SPDZ, which can be exploited in concurrent, multi-threaded settings, compromising output integrity and, in some cases, input privacy. In our analysis of three SPDZ implementations (MP-SPDZ, SCALE-MAMBA, and FRESCO), two are vulnerable to this attack, while we also uncover further issues and vulnerabilities with all implementations. We propose mitigation strategies and some recommendations for researchers, developers and users, which we hope can bring more awareness to these issues and avoid them reoccurring in future.

Kenny Paterson @kennyog.bsky.social · last yr.

Just about ready to set off to Madrid for #eurocrypt 2025, where I’ll have the great honour of giving the 2025 IACR Distinguished Lecture on Tuesday afternoon. #iacr #cryptography

Peter Schwabe @cryptojedi.bsky.social · last yr.

For those who enjoyed reading "Constant-Time Code: The Pessimist Case" by Thomas Pornin (2025/435), here's what I would consider "The Optimist Case": eprint.iacr.org/2025/759 Joint work with Santiago Arranz-Olmos, Gilles Barthe, Benjamin Grégoire, Jan Jancar, Vincent Laporte, and Tiago Oliveira.

Let's DOIT: Using Intel's Extended HW/SW Contract for Secure Compilation of Crypto Code

It is a widely accepted standard practice to implement cryptographic software so that secret inputs do not influence the cycle count. Software following this paradigm is often referred to as "constant...

eprint.iacr.org

@cascremers.bsky.social · last yr.

Updated version v0.9.5 of our book now available at tamarin-prover.com/book/ , with a range of improvements and exercises at the end.

Modeling and Analyzing Security Protocols with Tamarin: A Comprehensive Guide

The Tamarin prover is a security protocol verification tool that supports both falsification and unbounded verification in the symbolic model.

tamarin-prover.com

Real World Crypto Symposium @rwc.iacr.org · last yr.

Big announcement: RWC 2027 in Seattle! April 5-7 subject to board approval.

Real World Crypto Symposium @rwc.iacr.org · last yr.

RWC 2026 in Taipei!

Christopher Patton @cjpatton.bsky.social · last yr.

An intro to lattice crypto and the published NIST standards for non-cryptographers who find themselves involved in the PQ transition. Thanks to @cryptojedi.bsky.social for the assist :) blog.cloudflare.com/lattice-cryp...

Prepping for post-quantum: a beginner’s guide to lattice cryptography

This post is a beginner's guide to lattices, the math at the heart of the transition to post-quantum (PQ) cryptography. It explains how to do lattice-based encryption and authentication from scratch.

blog.cloudflare.com

Real World Crypto Symposium @rwc.iacr.org · last yr.

Ready for a cryptic adventure? Next week’s #realworldcrypto 2025 Day 2 promises anonymous credentials & signatures, post-quantum breakthroughs, open-source PKI insights, and side-channel showdowns—all in one jam-packed program!

µASC Conference @uasc.cc · last yr.

uASC 2025 was a huge success - we were sold out! Thanks to everyone who joined and see you in 2026!

Martin R. Albrecht @malb.bsky.social · last yr.

Together with @kennyog.bsky.social we're organising a meeting at Eurocrypt to discuss how the, let's say, "dramatically changing political landscape" affects cryptography and our community, both domestically in some countries but also internationally eurocrypt.iacr.org/2025/communi...

Wednesday, May 7, 14:30-16:00 (Room TBD): Cryptography in a Changing World: Navigating Geopolitical Uncertainty and Security Risks

Join us to discuss what we as a community can and should do in light of a dramatically changing political landscape, both domestically for some of us and internationally for all of us. We don't have ideas to pitch to you, but we think it will be useful to meet and to start a discussion.
For more information: Martin Albrecht and Kenny Paterson.

Peter Schwabe @cryptojedi.bsky.social · last yr.

The 3rd edition of WISC – Women in Security and Cryptography Workshop will take place in Bochum from June 16 to 18. Already confirmed are talks by Lejla Batina, Zinaida Benenson, Shafi Goldwasser, Martina Lindorfer, and Doreen Riepel. Registration is open now! casa.rub.de/en/events/wi...

WISC | Cluster of Excellence CASA | RUB

The Women in Security and Cryptography Workshop promotes international female PhD students and outstanding female students in the field of IT security.

casa.rub.de

Paul Rösler @roeslpa.bsky.social · last yr.

Join our Applied Crypto group at FAU in Nürnberg as a PhD student or spread the word: we're hiring. Our work covers many topics in real-world crypto, especially provable security and privacy of modern messaging protocols 🔐✉️ www.jobs.fau.de/jobs/7-phd-p...

7 PhD positions (m/f/d) (salary level 13 TV-L) in Computer Science (full time) and 3 PhD position (m/f/d) (salary level 13 TV-L) in Law (part time, 75%)

jobs.fau.de

Real World Crypto Symposium @rwc.iacr.org · last yr.

One more week left before the end of early registration for #realworldcrypto 2025. The last day to save $100 on your registration is February 26. rwc.iacr.org/2025/registr...

RWC 2025 registration

Real World Crypto Symposium

rwc.iacr.org

Nick Sullivan @nicksullivan.org · last yr.

The tentative program for Real World Crypto 2025 is live! rwc.iacr.org/2025/program... A huge thanks to my co-chair @malb.bsky.social and all the amazing program committee members for helping put this together. I'm looking forward to seeing everyone in Sofia! #realworldcrypto

RWC 2025 program

Real World Crypto Symposium

rwc.iacr.org

Annika Goedde @annikacg.bsky.social · last yr.

🎥 Finden wir den perfekten Geheimcode? Für "42 – Die Antwort auf fast alles" durfte ich Dreharbeiten an der @ruhr-uni-bochum.de begleiten. Die Folge mit Eike Kiltz & Peter Schwabe ist nun in der Mediathek verfügbar: www.arte.tv/de/videos/11... @cryptojedi.bsky.social #Bochum #Kryptographie

Finden wir den perfekten Geheimcode? - 42 - Die Antwort auf fast alles - Die ganze Doku | ARTE

Wir suchen seit jeher nach ihm – dem perfekten Geheimcode: Eine sichere Verschlüsselung unserer vertraulichen Informationen. Besonders heute, in der digitalen Welt. Doch die sicherste Verschlüsselung ...

arte.tv

Krijn Reijnders @krijn.isogeni.es · 2y ago

Finally, a state-of-the-art version of CTIDH! That is, deterministic and a prime of 2048 bits. We introduce a new batching strategy we call "wombats", making dCTIDH five times faster than deterministic CSIDH. Surprisingly, it even beats "non-deterministic" CTIDH. See eprint.iacr.org/2025/107

dCTIDH: Fast & Deterministic CTIDH

This paper presents dCTIDH, a CSIDH implementation that combines two recent developments into a novel state-of-the-art deterministic implementation. We combine the approach of deterministic variants o...

eprint.iacr.org