Dr. Michael Meyer
PostDoc
- E-Mail Adresse: michael1.meyer(at)ur.de (?ffnet Ihr E-Mail-Programm)
- Tel: +49 941 943 68602 (startet einen Telefonanruf, wenn Ihr Ger?t dies zul?sst)
- Standort: Bajuwarenstr. 4, BA 612
- Lehrstuhl für Datensicherheit und Kryptographie

I am a postdoc at University of Regensburg, Germany, in the QPC research group of Juliane Kr?mer.
Before that, I was a PhD student at RheinMain University of Applied Sciences and University of Würzburg, Germany, supervised by Steffen Reith and J?rn Steuding, and received my PhD from University of Würzburg. During my PhD, I spent five months in Juliane Kr?mer’s research group at TU Darmstadt.
I received my M.Sc. in Mathematics and B.Sc. in Computational Mathematics at Würzburg University. During my master programme, I spent one semester at Aristotle University Thessaloniki, Greece.
I'm a member of the team that submitted the SQIsign (externer Link, ?ffnet neues Fenster) signature scheme to the NIST PQC call for additional digital signature schemes (externer Link, ?ffnet neues Fenster).
Research interests
My research focus is isogeny-based post-quantum cryptography and elliptic curve cryptography.
Publikationen
Publications can also be found on GoogleScholar (externer Link, ?ffnet neues Fenster).
- Exclusive Ownership of Fiat-Shamir Signatures: ML-DSA, SQIsign, LESS, and More
Michael Meyer, Patrick Struck, and Maximiliane Weish?upl
Crypto 2025
[pdf] - dCTIDH: Fast & Deterministic CTIDH
Fabio Campos, Andreas Hellenbrand, Michael Meyer, and Krijn Reijnders
TCHES 2025
[pdf] - Finding Practical Parameters for Isogeny-based Cryptography
Maria Corte-Real Santos, Jonathan Komada Eriksen, Michael Meyer, and Francisco Rodríguez-Henríquez
IACR Communications in Cryptology, 1(3), 2024
presented at ArcticCrypt 2025
[pdf] - AprèsSQI: Extra Fast Verification for SQIsign Using Extension-Field Signing
Maria Corte-Real Santos, Jonathan Komada Eriksen, Michael Meyer, and Krijn Reijnders
Eurocrypt 2024
Early-career Best Paper Award
[pdf] - Hash your Keys before Signing: BUFF Security of the Additional NIST PQC Signatures
Thomas Aulbach, Samed Düzlü, Michael Meyer, Patrick Struck, and Maximiliane Weish?upl
PQCrypto 2024
[pdf] - Efficient Post-Quantum Secure Deterministic Threshold Wallets from Isogenies
Poulami Das, Andreas Erwig, Michael Meyer, and Patrick Struck
ACM AsiaCCS 2024
[pdf] - Optimizations and Practicality of High-Security CSIDH
Fabio Campos, Jorge Chavez-Saab, Jesús-Javier Chi-Domínguez, Michael Meyer, Krijn Reijnders, Francisco Rodríguez-Henríquez, Peter Schwabe, and Thom Wiggers
IACR Communications in Cryptology, 1(1), 2024
[pdf] - Cryptographic Smooth Neighbors
Giacomo Bruno, Maria Corte-Real Santos, Craig Costello, Jonathan Komada Eriksen, Michael Meyer, Michael Naehrig, and Bruno Sterner
Asiacrypt 2023
[pdf] - Disorientation Faults in CSIDH
Gustavo Banegas, Juliane Kr?mer, Tanja Lange, Michael Meyer, Lorenz Panny, Krijn Reijnders, Jana Sotáková, and Monika Trimoska
Eurocrypt 2023
[pdf] - Patient Zero and Patient Six: Zero-Value and Correlation Attacks on CSIDH and SIKE
Fabio Campos, Michael Meyer, Krijn Reijnders, and Marc St?ttinger
SAC 2022
[pdf] [code] - CTIDH: Faster constant-time CSIDH
Gustavo Banegas, Daniel J. Bernstein, Fabio Campos, Tung Chou, Tanja Lange, Michael Meyer, Benjamin Smith, and Jana Sotáková
TCHES 2021
[pdf] [website] - Sieving for twin smooth integers with solutions to the Prouhet-Tarry-Escott problem
Craig Costello, Michael Meyer, and Michael Naehrig
EUROCRYPT 2021
[pdf] - Trouble at the CSIDH: Protecting CSIDH with Dummy-Operations against Fault Injection Attacks
Fabio Campos, Matthias J. Kannwischer, Michael Meyer, Hiroshi Onuki, and Marc St?ttinger
FDTC 2020
[pdf] [code] - Threshold Schemes from Isogeny Assumptions
Luca De Feo and Michael Meyer
PKC 2020
[pdf] - Post-Quantum Cryptography for ECU Security Use Cases
Fabio Campos, Michael Meyer, Steffen Sanwald, Marc St?ttinger, and Yi Wang
escar Europe 2019 – Scientific Track - On Lions and Elligators: An efficient constant-time implementation of CSIDH
Michael Meyer, Fabio Campos, and Steffen Reith
PQCrypto 2019
[pdf] [code] - A faster way to the CSIDH
Michael Meyer and Steffen Reith
INDOCRYPT 2018
[pdf] [code] - Elliptische Kurven in der Post-Quantum-Kryptographie
Michael Meyer and Steffen Reith
Mathematische Semesterberichte, Springer, 2018 - On hybrid SIDH schemes using Edwards and Montgomery curve arithmetic
Michael Meyer, Steffen Reith, and Fabio Campos
Preprint, Cryptology ePrint Archive: Report 2017/1213
[pdf]
Ausgew?hlte Vortr?ge
- BUFF Security of the Additional NIST PQC Signatures
NTNU Research Seminar, Trondheim, 26 June 2024 - SQIsign Primes and How to Find Them
SIAM AG23, Eindhoven, 14 July 2023 - SQIsign primes: Fantastic p’s and where to find them
Isogeny Club, Online, 14 March 2023 - Patient Zero and Patient Six: Zero-Value and Correlation Attacks on CSIDH and SIKE
SAC 2022, Windsor, 25 August 2022 - Sieving for twin smooth integers with solutions to the Prouhet-Tarry-Escott problem
EUROCRYPT 2021, Zagreb, 19 October 2021 - B-SIDH and SQISign primes: Fantastic p’s and where to find them
AaA7-Workshop for Number Theory, virtual conference, 04 March 2021 - Threshold Schemes from Isogeny Assumptions
PKC 2020, virtual conferenece, 03 June 2020
PKC 2020 Presentation Appreciation Award - Isogeny-based Post-Quantum Cryptography: An Overview
AaA7-Workshop for Number Theory, University of Ulm, 05 July 2019 - On Lions and Elligators: An efficient constant-time implementation of CSIDH
PQCrypto 2019, Chongqing, 09 May 2019 - On Lions and Elligators: An efficient constant-time implementation of CSIDH
Cryptography Working Group, Utrecht, 12 April 2019 - A Faster Way to the CSIDH
INDOCRYPT 2018, New Delhi, 11 December 2018 - Elliptic Curves in Post-Quantum Cryptography
AaA7-Workshop for Number Theory, Free University of Berlin, 16 March 2018
Lehre
Theses
- Leon Weingarten,
Master,
Isogeny-Based Cryptography: From SIDH’s Fall to New Horizons,
joint with Prof. Dr. Müller - Andreas Hellenbrand.
Master,
Performance Evaluation of CSIDH on the Surface,
joint with Prof. Dr. Reith
Lectures/Seminars/Labs
- Lecture series “Computer Science and Society”, Winter 2024/25
Lecturer: Juliane Kr?mer - Lecture series “Computer Science and Society”, Winter 2023/24
Lecturer: Juliane Kr?mer - Seminar “Code-based Cryptography”, Summer 2023
Lecturer: Juliane Kr?mer - Seminar “Lattice-based Cryptography”, Winter 2022/23
Lecturer: Juliane Kr?mer - Project "Post-Quantum Cryptography", Summer 2022
Lecturer: Steffen Reith - Summer School "Isogeny-based Cryptography School", Summer 2021
Organizers: Chloe Martindale, Christophe Petit - Project "Post-Quantum Cryptography", Summer 2019
Lecturer: Steffen Reith - Statistics and Probability Theory, Summer 2018
Lecturer: Adrian Ulges