Gaëtan Leurent

69
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Publications

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New Representations of the AES Key Schedule

Gaëtan Leurent , Clara Pernot
Journal of Cryptology, 2024, 38 (1), pp.2. ⟨10.1007/s00145-024-09522-5⟩
Article dans une revue hal-04925739 v1
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Design of a Linear Layer Optimised for Bitsliced 32-bit Implementation

Gaëtan Leurent , Clara Pernot
IACR Transactions on Symmetric Cryptology, 2024, 2024 (1), pp.441-458. ⟨10.46586/tosc.v2024.i1.441-458⟩
Article dans une revue hal-04925740 v1
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Fast AES-Based Universal Hash Functions and MACs

Augustin Bariant , Jules Baudrin , Gaëtan Leurent , Clara Pernot , Léo Perrin et al.
IACR Transactions on Symmetric Cryptology, 2024, 2024 (2), pp.35-67. ⟨10.46586/tosc.v2024.i2.35-67⟩
Article dans une revue hal-04710478 v1
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Practical Key Recovery Attacks on FlexAEAD

Orr Dunkelman , Maria Eichlseder , Daniel Kales , Nathan Keller , Gaëtan Leurent et al.
Designs, Codes and Cryptography, 2022, 90 (4), pp.983--1007. ⟨10.1007/s10623-022-01023-5⟩
Article dans une revue hal-03528899 v1
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Cryptanalysis of Forkciphers

Augustin Bariant , Nicolas David , Gaëtan Leurent
IACR Transactions on Symmetric Cryptology, 2020, 2020 (1), pp.233--265. ⟨10.13154/tosc.v2020.i1.233-265⟩
Article dans une revue hal-03135299 v1
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Spook: Sponge-Based Leakage-Resistant Authenticated Encryption with a Masked Tweakable Block Cipher

Davide Bellizia , Francesco Berti , Olivier Bronchain , Gaëtan Cassiers , Sébastien Duval et al.
IACR Transactions on Symmetric Cryptology, 2020, Special Issue on Designs for the NIST Lightweight Standardisation Process, 2020 (S1), pp.295--349. ⟨10.13154/tosc.v2020.iS1.295-349⟩
Article dans une revue hal-03136493 v1
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Generic Attacks on Hash Combiners

Zhenzhen Bao , Itai Dinur , Jian Guo , Gaëtan Leurent , Lei Wang
Journal of Cryptology, 2020, 33 (3), pp.742-823. ⟨10.1007/s00145-019-09328-w⟩
Article dans une revue hal-02424905 v1

La fragilité inattendue du chiffrement symétrique dans le monde post-quantique

Gaëtan Leurent , María Naya-Plasencia
Interstices, 2019
Article dans une revue hal-02425716 v1
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MDS Matrices with Lightweight Circuits

Sébastien Duval , Gaëtan Leurent
IACR Transactions on Symmetric Cryptology, 2018, 2018 (2), pp.48-78. ⟨10.13154/tosc.v2018.i2.48-78⟩
Article dans une revue hal-01944495 v1

La fragilité inattendue du chiffrement symétrique

Gaëtan Leurent , María Naya-Plasencia
La Recherche, 2018, Novembre 2018
Article dans une revue hal-01953448 v1
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Partial Sums Meet FFT: Improved Attack on 6-Round AES

Orr Dunkelman , Shibam Ghosh , Nathan Keller , Gaëtan Leurent , Avichai Marmor et al.
Eurocrypt 2024 - 43rd Annual International Conference on the Theory and Applications of Cryptographic Techniques, May 2024, Zurich, Switzerland. pp.128-157, ⟨10.1007/978-3-031-58716-0_5⟩
Communication dans un congrès hal-04925753 v1
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Cryptanalysis of Algebraic Verifiable Delay Functions

Alex Biryukov , Ben Fisch , Gottfried Herold , Dmitry Khovratovich , Gaëtan Leurent et al.
CRYPTO 2024 - 44th Annual International Cryptology Conference, Aug 2024, Santa Barbara (CA), United States. pp.457-490, ⟨10.1007/978-3-031-68382-4_14⟩
Communication dans un congrès hal-04782206 v1

Improving Generic Attacks Using Exceptional Functions

Xavier Bonnetain , Rachelle Heim Boissier , Gaëtan Leurent , André Schrottenloher
CRYPTO 2024 - 44th Annual International Cryptology Conference, Aug 2024, Santa Barbara, United States. pp.105-138, ⟨10.1007/978-3-031-68385-5_4⟩
Communication dans un congrès hal-04724605 v1
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Truncated Boomerang Attacks and Application to AES-Based Ciphers

Augustin Bariant , Gaëtan Leurent
EUROCRYPT 2023 - 42nd Annual International Conference on the Theory and Applications of Cryptographic Technique, Apr 2023, Lyon, France. pp.3-35, ⟨10.1007/978-3-031-30634-1_1⟩
Communication dans un congrès hal-04277583 v1
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Clustering Effect in Simon and Simeck

Gaëtan Leurent , Clara Pernot , André Schrottenloher
ASIACRYPT 2021 - 27th International Conference on the Theory and Application of Cryptology and Information Security, Dec 2021, Virtual, Singapore. pp.272-302, ⟨10.1007/978-3-030-92062-3_10⟩
Communication dans un congrès hal-03529507 v1
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Cryptanalysis of the GPRS Encryption Algorithms GEA-1 and GEA-2

Christof Beierle , Patrick Derbez , Gregor Leander , Gaëtan Leurent , Håvard Raddum et al.
EUROCRYPT 2021 - 40th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Oct 2021, Zagreb, Croatia. pp.155-183, ⟨10.1007/978-3-030-77886-6_6⟩
Communication dans un congrès hal-03529373 v1
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On the Cost of ASIC Hardware Crackers: A SHA-1 Case Study

Anupam Chattopadhyay , Mustafa Khairallah , Gaëtan Leurent , Zakaria Najm , Thomas Peyrin et al.
CT-RSA 2021 - The Cryptographer’s Track at the RSA Conference, May 2021, Virtual, United States. pp.657-681, ⟨10.1007/978-3-030-75539-3_27⟩
Communication dans un congrès hal-03529193 v1
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New Representations of the AES Key Schedule

Gaëtan Leurent , Clara Pernot
EUROCRYPT 2021 - 40th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Oct 2021, Zagreb, Croatia. pp.54-84, ⟨10.1007/978-3-030-77870-5_3⟩
Communication dans un congrès hal-03529224 v1

The First Chosen-Prefix Collision on SHA-1

Gaëtan Leurent , Thomas Peyrin
Real World Crypto 2020 - Real World Crypto Symposium, Jan 2020, New York, United States
Communication dans un congrès hal-03136460 v1
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Universal Forgery Attack against GCM-RUP

Yanbin Li , Gaëtan Leurent , Meiqin Wang , Wei Wang , Guoyan Zhang et al.
CT-RSA 2020 - The Cryptographers' Track at the RSA Conference 2020, Feb 2020, San Francisco, United States. pp.15--34, ⟨10.1007/978-3-030-40186-3_2⟩
Communication dans un congrès hal-02424899 v1
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SHA-1 is a Shambles

Gaëtan Leurent , Thomas Peyrin
USENIX 2020 - 29th USENIX Security Symposium, Aug 2020, Boston / Virtual, United States. pp.1839--1856
Communication dans un congrès hal-03136301 v1

The First Chosen-Prefix Collision on SHA-1

Gaëtan Leurent , Thomas Peyrin
Dagstuhl Seminar 20041 - Symmetric Cryptography, Jan 2020, Dagstuhl, Germany
Communication dans un congrès hal-03146187 v1
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Low-Memory Attacks against Two-Round Even-Mansour using the 3-XOR Problem

Gaëtan Leurent , Ferdinand Sibleyras
CRYPTO 2019 - 39th Annual International Cryptology Conference, Aug 2019, Santa Barbara, United States. pp.210-235, ⟨10.1007/978-3-030-26951-7_8⟩
Communication dans un congrès hal-02424902 v1
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Lightweight MACs from Universal Hash Functions

Sébastien Duval , Gaëtan Leurent
CARDIS 2019 - 18th Smart Card Research and Advanced Application Conference, Nov 2019, Prague, Czech Republic. pp.195-215, ⟨10.1007/978-3-030-42068-0_12⟩
Communication dans un congrès hal-02424904 v1
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From Collisions to Chosen-Prefix Collisions

Gaëtan Leurent , Thomas Peyrin
Eurocrypt 2019 - 38th Annual International Conference on the Theory and Applications of Cryptographic Techniques, May 2019, Darmstadt, Germany. pp.527-555, ⟨10.1007/978-3-030-17659-4_18⟩
Communication dans un congrès hal-02424900 v1

Security Issues with Small Block Sizes

Gaëtan Leurent
Lightweight Crypto Day 2018, Apr 2018, Tel Aviv, Israel
Communication dans un congrès hal-01966550 v1

The Missing Difference Problem

Gaëtan Leurent
Flexible Symmetric Cryptography, Mar 2018, Leiden, Netherlands
Communication dans un congrès hal-01953390 v1

MDS Matrices with Lightweight Circuits

Gaëtan Leurent
The Challenges of Lightweight Cryptanalysis, Apr 2018, Tel Aviv, Israel
Communication dans un congrès hal-01953383 v1

Quantum differential and linear cryptanalysis

Gaëtan Leurent , Marc Kaplan , Anthony Leverrier , María Naya-Plasencia
FSE 2017 - Fast Software Encryption, Mar 2017, Tokyo, Japan
Communication dans un congrès hal-01652807 v1

Bad Symmetric Crypto in the Real World

Gaëtan Leurent
Journées Nationales 2017 Pré-GDR Sécurité Informatique, May 2017, Paris, France
Communication dans un congrès hal-01652853 v1

Breaking Symmetric Cryptosystems Using Quantum Algorithms

Gaëtan Leurent
FOQUS - ​Frontiers of Quantum Safe Cryptography, Apr 2017, Paris, France
Communication dans un congrès hal-01652852 v1
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Key Recovery Attack Against 2.5-Round Pi-Cipher

Christina Boura , Avik Chakraborti , Gaëtan Leurent , Goutam Paul , Dhiman Saha et al.
FSE 2016 - 23rd International Conference Fast Software Encryption, Mar 2016, Bochum, Germany. pp.535 - 553, ⟨10.1007/978-3-662-52993-5_27⟩
Communication dans un congrès hal-01404164 v1
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On the Practical (In-)Security of 64-bit Block Ciphers

Karthikeyan Bhargavan , Gaëtan Leurent
ACM CCS 2016 - 23rd ACM Conference on Computer and Communications Security, Oct 2016, Vienna, Austria. pp.456-467, ⟨10.1145/2976749.2978423⟩
Communication dans un congrès hal-01404208 v2

Breaking Symmetric Cryptosystems Using Quantum Period Finding

Gaëtan Leurent
TCCM-CACR 2016, Aug 2016, Yinchuan, China
Communication dans un congrès hal-01407929 v1

Transcript Collision Attacks

Gaëtan Leurent
Symmetric Cryptography (Dagstuhl Seminar 16021), Jan 2016, Dagstuhl, Germany
Communication dans un congrès hal-01407921 v1

Generic Attacks against MAC Algorithms

Gaëtan Leurent
Asian Workshop on Symmetric Key Cryptography - ASK 2015, Sep 2015, Singapore, Singapore
Communication dans un congrès hal-01243175 v1

Construction de S-Boxes à Bas Coût par des Réseaux de Feistel et des réseaux MISTY

Anne Canteaut , Sébastien Duval , Gaëtan Leurent
Journées Codage et Cryptographie 2015, Oct 2015, La Londe-les-Maures, France
Communication dans un congrès hal-01240845 v1
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The Sum Can Be Weaker Than Each Part

Gaëtan Leurent , Lei Wang
Advances in Cryptology - Eurocrypt 2015 (Part I) - 34th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Apr 2015, Sofia, Bulgaria. pp.345-367, ⟨10.1007/978-3-662-46800-5_14⟩
Communication dans un congrès hal-01105129 v1
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Cryptanalysis of Feistel Networks with Secret Round Functions

Alex Biryukov , Gaëtan Leurent , Léo Perrin
Selected Areas in Cryptography - SAC 2015, Aug 2015, Sackville, Canada
Communication dans un congrès hal-01243130 v1

Construction of Lightweight S-Boxes using Feistel and MISTY structures

Anne Canteaut , Sébastien Duval , Gaëtan Leurent
Selected Areas in Cryptography - SAC 2015, Aug 2015, Sackville, Canada
Communication dans un congrès hal-01205187 v1
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Differential Forgery Attack against LAC

Gaëtan Leurent
Selected Areas in Cryptography - SAC 2015, Aug 2015, Sackville, Canada
Communication dans un congrès hal-01017048 v2

SCREAM v3.0

Gaëtan Leurent
Directions in Authenticated Ciphers - DIAC 2015, Sep 2015, Singapore, Singapore
Communication dans un congrès hal-01243177 v1
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Generic Attacks against MAC Algorithms

Gaëtan Leurent
Selected Areas in Cryptography - SAC 2015, Aug 2015, Sackville, Canada
Communication dans un congrès hal-01243151 v1
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The Usage of Counter Revisited: Second-Preimage Attack on New Russian Standardized Hash Function

Jian Guo , Jérémy Jean , Gaëtan Leurent , Thomas Peyrin , Lei Wang
Selected Areas in Cryptography - SAC 2014, Aug 2014, Montreal, Canada. pp.195-211, ⟨10.1007/978-3-319-13051-4_12⟩
Communication dans un congrès hal-01093450 v1

Improved Generic Attacks Against Hash-based MACs and HAIFA

Itai Dinur , Gaëtan Leurent
Advances in Cryptology - CRYPTO 2014, Aug 2014, Santa Barbara, CA, United States. ⟨10.1007/978-3-662-44371-2_9⟩
Communication dans un congrès hal-01086177 v1

New Generic Attacks on Hash-based MACs

Gaëtan Leurent
Dagstuhl Seminar 14021 Symmetric Cryptography, Jan 2014, Dagstuhl, Germany
Communication dans un congrès hal-01093543 v1

Differential Forgery Attack against LAC

Gaëtan Leurent
DIAC 2014, Aug 2014, Santa Barbara, United States
Communication dans un congrès hal-01094140 v1

Cryptanalysis of Wheesht

Anne Canteaut , Gaëtan Leurent
DIAC 2014, Aug 2014, Santa Barbara, United States
Communication dans un congrès hal-01093428 v1
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Hardware Implementation and Side-Channel Analysis of Lapin

Lubos Gaspar , Gaëtan Leurent , François-Xavier Standaert
Topics in Cryptology - CT-RSA 2014, Feb 2014, San Francisco, United States. pp.206-226, ⟨10.1007/978-3-319-04852-9_11⟩
Communication dans un congrès hal-00934054 v1
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Symmetric Cryptanalysis Beyond Primitives

Gaëtan Leurent
Cryptography and Security [cs.CR]. Sorbonne Université, 2024
HDR tel-04406617 v1

MDS Matrices

Gaëtan Leurent
Christina Boura; María Naya-Plasencia. Symmetric Cryptography 1: Design and Security Proofs, John Wiley & Sons, Ltd, pp.99--109, 2023, 978-1-78945-147-4. ⟨10.1002/9781394256358.ch7⟩
Chapitre d'ouvrage hal-04333233 v1

Modes of Operation

Gaëtan Leurent
Christina Boura; María Naya-Plasencia. Symmetric Cryptography 1: Design and Security Proofs, John Wiley & Sons, Ltd, pp.73--85, 2023, 9781394256358. ⟨10.1002/9781394256358.ch5⟩
Chapitre d'ouvrage hal-04333230 v1
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Le traçage anonyme, dangereux oxymore

Xavier Bonnetain , Anne Canteaut , Véronique Cortier , Pierrick Gaudry , Lucca Hirschi et al.
Le droit face au coronavirus, LexisNexis, pp.468--480, 2021, 9782711036394
Chapitre d'ouvrage hal-02997228 v1

IACR Transactions on Symmetric Cryptology

Gaëtan Leurent , Itai Dinur
IACR Transactions on Symmetric Cryptology, 2021 (1), 2021
N°spécial de revue/special issue hal-04333264 v1

IACR Transactions on Symmetric Cryptology

Itai Dinur , Gaëtan Leurent
IACR Transactions on Symmetric Cryptology, 2020 (2), 2020
N°spécial de revue/special issue hal-03141015 v1

IACR Transactions on Symmetric Cryptology

Itai Dinur , Gaëtan Leurent
France. IACR Transactions on Symmetric Cryptology, 2020 (4), 2020
N°spécial de revue/special issue hal-03141017 v1

IACR Transactions on Symmetric Cryptology

Gaëtan Leurent , Yu Sasaki
IACR Transactions on Symmetric Cryptology, 2020 (1), 2020
N°spécial de revue/special issue hal-03141014 v1

IACR Transactions on Symmetric Cryptology

Itai Dinur , Gaëtan Leurent
IACR Transactions on Symmetric Cryptology, 2020 (3), 2020
N°spécial de revue/special issue hal-03141016 v1

IACR Transactions on Symmetric Cryptology

Gaëtan Leurent , Yu Sasaki
IACR Transactions on Symmetric Cryptology, 2019 (4), 2020
N°spécial de revue/special issue hal-03141012 v1

IACR Transactions on Symmetric Cryptology

Itai Dinur , Gaëtan Leurent
IACR Transactions on Symmetric Cryptology, 2020 (S1), 2020
N°spécial de revue/special issue hal-03141018 v1

IACR Transactions on Symmetric Cryptology

Gaëtan Leurent , Yu Sasaki
IACR Transactions on Symmetric Cryptology, 2019 (3), 2019
N°spécial de revue/special issue hal-03141011 v1

IACR Transactions on Symmetric Cryptology

Gaëtan Leurent , Yu Sasaki
IACR Transactions on Symmetric Cryptology, 2019 (2), 2019
N°spécial de revue/special issue hal-03141010 v1