Selected Invited Talks |
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Security of Encryption Modes and an Exposition of Proof Techniques.
Workshop on Coding and Cryptography 2024. Perugia, Italy
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Security of Permutation-Based Modes and Its Application to Ascon.
NIST Lightweight Cryptography Competition Workshop 2023. Online (select Day2_Part1)
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Understanding the Duplex and Its Security.
Permutation-Based Crypto 2023. Lyon, France
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Tweakable Blockciphers and Beyond Birthday Bound Security.
Asian Workshop on Symmetric Key Cryptography 2018. Kolkata, India
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Beyond Birthday-Bound Security.
COST Training School on Symmetric Cryptography and Blockchain 2018. Torremolinos, Spain
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Security of Authenticated Encryption Modes.
COST Training School on Symmetric Cryptography and Blockchain 2018. Torremolinos, Spain
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Beyond Birthday-Bound Security.
Summer School on Real-World Crypto and Privacy 2017. Šibenik, Croatia
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Introduction to Tweakable Blockciphers.
Summer School on Real-World Crypto and Privacy 2017. Šibenik, Croatia
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Improved Masking for Tweakable Blockciphers with Applications to Authenticated Encryption.
Dagstuhl 2016. Wadern, Germany
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Tweakable Blockciphers: Theory and Application.
IACR School on Design and Security of Cryptographic Algorithms and Devices 2015. Sardinia, Italy
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Introduction to Provable Security.
IACR School on Design and Security of Cryptographic Algorithms and Devices 2015. Sardinia, Italy
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Selected Conference Talks |
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Deck-Based Wide Block Cipher Modes.
NIST Workshop on Block Cipher Modes of Operation 2023. Gaithersburg, MD, USA (from 2:57:00)
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Leakage Resilient Value Comparison With Application to Message Authentication.
EUROCRYPT 2021. Virtual
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Beyond Birthday Bound Secure Fresh Rekeying: Application to Authenticated Encryption.
ASIACRYPT 2020. Virtual
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Security of the Suffix Keyed Sponge.
FSE 2020. Virtual
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Dumbo, Jumbo, and Delirium: Parallel Authenticated Encryption for the Lightweight Circus
FSE 2020. Virtual
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Leakage Resilience of the Duplex Construction.
ASIACRYPT 2019. Kobe, Japan
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Dumbo, Jumbo, and Delirium: Parallel Authenticated Encryption for the Lightweight Circus.
NIST Lightweight Cryptography Competition Workshop 2019. Gaithersburg, MD, USA (from 0:38:00)
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Leakage Resilience of the ISAP Mode: A Vulgarized Summary.
NIST Lightweight Cryptography Competition Workshop 2019. Gaithersburg, MD, USA (from 5:09:00)
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Key Prediction Security of Keyed Sponges.
FSE 2019. Paris, France
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Towards Tight Security of Cascaded LRW2.
TCC 2018. Panaji, India
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Full-State Keyed Duplex With Built-In Multi-User Support.
ASIACRYPT 2017. Hong Kong, China
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Encrypted Davies-Meyer and Its Dual: Towards Optimal Security Using Mirror Theory.
CRYPTO 2017. Santa Barbara, CA, USA
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Insuperability of the Standard Versus Ideal Model Gap for Tweakable Blockcipher Security.
CRYPTO 2017. Santa Barbara, CA, USA
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XOR of PRPs in a Quantum World.
Conference on Post-Quantum Cryptography, PQCrypto 2017. Utrecht, The Netherlands
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Security Analysis of BLAKE2's Modes of Operation.
FSE 2017. Tokyo, Japan
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XPX: Generalized Tweakable Even-Mansour with Improved Security Guarantees.
CRYPTO 2016. Santa Barbara, CA, USA
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On the Impact of Known-Key Attacks on Permutation-Based Hashing.
ASIACRYPT 2015. Auckland, New Zealand
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On the XOR of Multiple Random Permutations.
Applied Cryptography and Network Security, ACNS 2015. New York City, NY, USA
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Optimally Secure Tweakable Blockciphers.
FSE 2015. Istanbul, Turkey
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Security of Keyed Sponge Constructions Using a Modular Proof Approach.
FSE 2015. Istanbul, Turkey
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Breaking and Fixing Cryptophia's Short Combiner.
Cryptology and Network Security, CANS 2014. Heraklion, Greece
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Beyond 2^{c/2} Security in Sponge-Based Authenticated Encryption Modes.
Directions in Authenticated Ciphers 2014. Santa Barbara, CA, USA
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Indifferentiability of Double Length Compression Functions.
IMA Cryptography and Coding 2013. Oxford, UK
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Optimal Collision Security in Double Block Length Hashing with Single Length Key.
ASIACRYPT 2012. Beijing, China
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Hash Functions Based on Three Permutations: A Generic Security Analysis.
CRYPTO 2012. Santa Barbara, CA, USA
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Provable Security of BLAKE with Non-Ideal Compression Function.
Selected Areas in Cryptography, SAC 2012. Windsor, Ontario, Canada
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Provable Chosen-Target-Forced-Midfix Preimage Resistance.
Selected Areas in Cryptography, SAC 2011. Toronto, Ontario, Canada
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The Parazoa Family: Generalizing the Sponge Hash Functions.
ECRYPT II Hash Workshop 2011. Tallinn, Estonia
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Anonymous Credential Schemes with Encrypted Attributes.
Cryptology and Network Security, CANS 2010. Kuala Lumpur, Malaysia
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Security Reductions of the Second Round SHA-3 Candidates.
Information Security Conference, ISC 2010. Boca Raton, FL, USA
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Steering Committees |
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FSE since 2021
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ISC since 2023
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SAC since 2024
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Program Chair / (Co-)Editor-in-Chief |
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FSE 2022, 2023
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ToSC 2021/22, 2022/23
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ISC 2023
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IET Information Security (deputy) since 2023
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Program Committees |
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ASIACRYPT 2015, 2017, 2018, 2022
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CRYPTO 2022, 2023, 2024, 2025
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EUROCRYPT 2017, 2018, 2019, 2020, 2021, 2024
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CHES 2019, 2020
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FSE 2016, 2017, 2018, 2019, 2020, 2024, 2025
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ACISP 2020
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ACM CCS 2023
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ACNS 2018
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ArcticCrypt 2016, 2025
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CT-RSA 2023
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Euro S&P 2019
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ICMC 2018, 2019
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Indocrypt 2018, 2020
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Inscrypt 2024
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IWSEC 2016, 2017, 2018
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LLE 2024
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ProvSec 2016, 2017, 2018, 2019
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SAC 2019, 2023, 2024
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SECITC 2016, 2017
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Editorial Boards |
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IET Information Security 2020-2023
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TCHES 2018/19, 2019/20
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ToSC 2016/17, 2017/18, 2018/19, 2019/20, 2023/24, 2024/25
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ToSC special issue on NIST Lightweight Submissions 2020
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Grants and Prizes |
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NWO Vidi 2023
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Adviescommissie Outreach Beta 2021, 2022, 2023, 2024
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Best Cybersecurity Master Thesis 2019, 2021, 2022, 2023
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Organization |
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Co-organizer of Applied Cryptography Course, Amsterdam (March/April 2025)
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Co-organizer of End-of-ESCADA workshop, Nijmegen (August 2024)
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Co-organizer of Lorentz workshop Beating Real-Time Crypto: Solutions and Analysis, Leiden (April 2024)
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Co-organizer of Dagstuhl workshop Symmetric Cryptography (Dagstuhl Seminar 24041), Dagstuhl (January 2024)
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Program co-chair of ISC 2023, Groningen (November 2023)
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Program co-chair of FSE 2023, Beijing and Kobe (March 2023)
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Co-organizer of FrisiaCrypt 2022, Terschelling (September 2022)
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Co-organizer of Dagstuhl workshop Symmetric Cryptography (Dagstuhl Seminar 22141), Dagstuhl (April 2022)
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Program co-chair of FSE 2022, Athens (March 2022)
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Co-organizer of Dagstuhl workshop Symmetric Cryptography (Dagstuhl Seminar 20041), Dagstuhl (January 2020)
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Co-organizer of Lorentz workshop Flexible Symmetric Cryptography, Leiden (March 2018)
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Co-editor of Wiskunde in de cryptografie (September 2017)
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Teaching |
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Postdocs |
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PhD Students |
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