Research

Currently, I am working as a postdoc at Université de Picardie Jules Verne v Amiens. My alma mater is PřF and FI MUNI. I strive to bridge beautiful theory (e.g., mathematics) with useful practice (e.g., cryptology) both in my research and out of it.



  • elliptic curves, algebra, and number theory (elementary, algebraic, and computational)
  • applied cryptography - mainly assymetric one, e.g. isogeny- or multivariate-based,
  • cryptanalysis of implementations, primitives and standards,
  • utilizing algebraic and lattice methods to attack implementations through side channels.

Publications

2022

DiSSECT: Distinguisher of Standard & Simulated Elliptic Curves via Traits

SEDLÁČEK, Vladimír, Vojtěch SUCHÁNEK, Antonín DUFKA, Marek SÝS, Vashek MATYÁŠ. To be published at AFRICACRYPT 2022.

SHINE: Resilience via Practical Interoperability of Multi-Party Schnorr Signature Schemes

DUFKA, Antonín, Vladimír SEDLÁČEK, Petr ŠVENDA. To be published at SECRYPT 2022.

2021

On cryptographic weaknesses related to elliptic curves

SEDLÁČEK, Vladimír. Dissertation thesis. Masaryk university, Faculty of Informatics. Thesis supervisor Václav MATYÁŠ and Riccardo FOCARDI.

A formula for disaster: a unified approach to elliptic curve special-point-based attacks

SEDLÁČEK, Vladimír, Jesús-Javier CHI-DOMINGUEZ, Ján JANČÁR a Billy Bob BRUMLEY. In Tibouchi M., Wang H. Advances in Cryptology – ASIACRYPT 2021. Cham: Springer, 2021. s. 130-159. ISBN 978-3-030-92061-6.

2020

Fooling primality tests on smartcards

SEDLÁČEK, Vladimír, Ján JANČÁR a Petr ŠVENDA. In Liqun Chen, Ninghui Li, Kaitai Liang and Steve Schneider. 25th European Symposium on Research in Computer Security (ESORICS) 2020. Switzerland: Springer, 2020. s. 209-229. ISBN 978-3-030-59012-3.

Minerva: The curse of ECDSA nonces

JANČÁR, Ján, Vladimír SEDLÁČEK, Petr ŠVENDA a Marek SÝS. In Amir Moradi, Mehdi Tibouchi. IACR Transactions on Cryptographic Hardware and Embedded Systems. Německo: Ruhr-University of Bochum, 2020. s. 281-308. ISSN 2569-2925.

2019

I want to break square-free: The 4p - 1 factorization method and its RSA backdoor viability

SEDLÁČEK, Vladimír, Dušan KLINEC, Marek SÝS, Petr ŠVENDA a Václav MATYÁŠ. In Proceedings of the 16th International Joint Conference on e-Business and Telecommunications (ICETE 2019) - Volume 2: SECRYPT. Prague, Czech Republic: SCITEPRESS, 2019. s. 25-36. ISBN 978-989-758-378-0.

2017

Circular units of real abelian fields with four ramified primes

SEDLÁČEK, Vladimír. Archivum Mathematicum. Brno: Masaryk University, 2017, roč. 53, č. 4, s. 221-252. ISSN 1212-5059.

Circular units of abelian fields

SEDLÁČEK, Vladimír. Master's thesis. Masaryk university, Faculty of Science. Thesis supervisor Radan KUČERA.

2015

An Introduction to Circular Units (CS)

SEDLÁČEK, Vladimír. Bachelor thesis. Masaryk university, Faculty of Science. Thesis supervisor Radan KUČERA.