Simon-Philipp Merz retweeted
There have been many papers about the algebraic cryptanalysis of Poseidon lately. What do we know so far?
In this thread, we will review:
1. All (algebraic) attack vectors.
2. How recent progress affects the security of Poseidon.
Let's understand this better!
Simon-Philipp Merz retweeted
📃New article with @merzsp !
We present new algebraic techniques to attack the Poseidon2 and Poseidon2b 🧜🔱 hash functions.
This is a class on 'Skipping Class', and how to make 15000$ in one day. 💸
(1/12)
Simon-Philipp Merz retweeted
📄 New Blog Post (+paper!): Breaking and Fixing Content-Defined Chunking
To be presented at RWC
blog.ktruong.dev/breaking-cd…
Joint work with @merzsp, @winterdeaf, Felix Günther, @kennyog
We analyze Content-Defined Chunking, mostly in backup systems. Read the blog post for more!
Simon-Philipp Merz retweeted
📄 End-to-end Encrypted Cloud Storage in the Wild: A Broken Ecosystem (To appear at ACM CCS 2024)
Joint work with @jonas__hofmann.
We analyzed five end-to-end encrypted cloud storage services and found severe vulnerabilities in four of them.
🌐: brokencloudstorage.info
Simon-Philipp Merz retweeted
We have a PhD position in ethnography focusing on the security needs of protesters, as part of our Social Foundations of Cryptography project (social-foundations-of-crypto…).
Deadline: 31 August 2024. Open to UK applicants.
More information here: findaphd.com/phds/project/et…
Simon-Philipp Merz retweeted
One takeaway from Eurocrypt: the IACR community seems enthusiastic about the idea of a unified submission pipeline for Asiacrypt/Crypto/Eurocrypt
Simon-Philipp Merz retweeted
(THREAD) @martinralbrecht and I have written a retrospective on “Crypto in the Wild”. This is about some of our work over the last 20 years or so, in which we look “out there” into the wild to see how cryptography is used in deployed systems. Link:
eprint.iacr.org/2024/532 (1/6)
Simon-Philipp Merz retweeted
Time to update your DeltaChat clients, thanks to analysis by Yuanming Song, Lenka Mareková and me: delta.chat/en/2024-03-25-cry…
Simon-Philipp Merz retweeted
Registration for "Mathematics for post-quantum cryptanalysis" (esat.kuleuven.be/cosic/event…) is active now , hope to see you in Budapest!
Simon-Philipp Merz retweeted
Simon (@merzsp) started off the fourth season of The Isogeny Club with a mouthwatering talk on SCALLOP, a somewhat scalable effective group action from isogenies.
If you missed the talk, or just want to watch it again, the recording is now available youtube.com/watch?v=BlCn7iPu…
Simon-Philipp Merz retweeted
Happy to announce an exciting conference in Budapest (5th-9th August) called "Mathematics for post-quantum cryptanalysis" (esat.kuleuven.be/cosic/event…) jointly organized with Wouter Castryck and Fre Vercauteren. 1/2
Simon-Philipp Merz retweeted
Season Four of our Seminar Sessions starts in about two weeks! @merzsp starts with a talk on SCALLOP, with Mingjie following up two weeks later with a talk on SCALLOP-HD, 17pm CET as always.
The remaining schedule will be announced soon!
More info: isogeny.club
Simon-Philipp Merz retweeted
We are excited to announce the launch of the Post Quantum Cryptography Alliance (PQCA), an open and collaborative initiative to drive the advancement and adoption of post-quantum cryptography.
Read the announcement: hubs.la/Q02jYtZk0
#quantum #cryptography #opensource
Simon-Philipp Merz retweeted
I'm thrilled to announce that I will be joining @KingsCollegeLon as a lecturer (assistant professor) this November!
Additionally, I have a single PhD studentship available, details will follow soon :)
Simon-Philipp Merz retweeted
eprint.iacr.org/2023/1618 In this paper we look at finding degree d isogenies between supersingular elliptic curves. We improve on quantum isogeny finding whenever d>p^1/2 and classical isogeny finding (meet-in-the-middle) whenever p<d<p^5/4 , 1/2
Simon-Philipp Merz retweeted
I'm looking for a postdoc to work with us on lattice-based cryptography
See martinralbrecht.wordpress.co… and kcl.ac.uk/jobs/076525-resear…
Closing date: 31 January, 2 year contract in London, salary £42k to £60k.
Please help me reach potential candidates.
Simon-Philipp Merz retweeted
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 🔄 🔄🔃🔃