The swiss isogeny day is a recurring meetup of cryptographers working on isogeny-based cryptography in and around Switzerland.
In the past we have had attendees from ENS de Lyon, EPFL, Ethereum Foundation, ETH Zurich, IBM Research, Politecnico di Torino, Ruhr-Universität Bochum, Technische Universität München, Universität der Bundeswehr München, Universität Konstanz, Université Côte D'Azur, Universiy of Colorado Boulder, and UZH.
To register for an event or to get regular updates, please contact swissogeny@defeo.lu.
No date set yet for the next event.
26th of November 2025, Bernoulli Center EPFL Lausanne
Lollipops on unknown degree level structures
Max Duparc, EPFL Lausanne
The SQInstructor: a guide to SQIsign and the Deuring Correspondence with level structures
Luca De Feo, IBM Research Zürich
On the Active Security of the PEARL-SCALLOP Group Action
Ryan Rueger, IBM Research Zürich & Technical University of Munich
Brainstorm topics: Factoring isogenies of non-smooth square degree given their HD-representation, Exploring new variants of KLPT and Designing advanced schemes from SQInstructor.
26th of June 2025, ETH Zurich
Cycles in (abstract) isogeny graphs: How many are there, and where can you find them?
Eli Orvis, Universiy of Colorado Boulder
[slides]
Snake Mackerel: An Isogeny-Based AKEM
Jonas Meers, Ruhr-Universität Bochum
[slides]
WaterSQI: SQIing on the sea side
Tako Boris Fouotsa, EPFL
[slides]
Brainstorm topics: Cryptanalysis of malformed POKE public keys and Finding the right generalisation of the spine on the isogeny graph
20th of March 2025, IBM Research – Europe
30-ε Years of Isogeny Group Actions
Lorenz Panny, Technische Universität München
[slides]
PEGASIS: Practical Effective Class Group Action using 4-Dimensional Isogenies
Ryan Rueger, IBM Research/Technische Universität München
[slides] [paper]
Brainstorm topic: Isogeny-based group actions
21st of January 2025, EPFL
Genus 4 curves: invariants and reconstruction
Thomas
Bouchet, Univeristé Côte D'Azur
[paper]
Kani’s Lemma over quadratic twists: Searching for universal gluing
Max Duparc, EPFL
[slides]
Overview of SQISign round 2 NIST submission
Luca De Feo, IBM Research
PRISM: Simple And Compact Identification and Signatures From Large Prime Degree Isogenies
Giacomo Borin, IBM Research/UZH
[paper]
Brainstorm topic: Prism cryptanalysis