Summer School crypt@b-it 2024 Bonn-Aachen International Center for Information Technology 26-08-2024 -- 30-08-2024 Lattice Algorithms for Cryptography Speaker 5 x 90 min Lecture + 3 x 90 mins Tutorials https://cryptabit.bit.uni-bonn.de/2024 Symposium 10th QSC General Assembly in Amsterdam Quantum Software Consortium 16-11-2023 Lattice-based cryptography and average-case hardness Speaker 40 min https://www.quantumsc.nl/Events/Archive/event/99/10th-QSC-General-Assembly-in-Amsterdam Conference Post-Quantum Cryptography Conference PKI Consortium 07-11-2023 Lattice-based cryptography Speaker 40 min https://pkic.org/events/2023/pqc-conference-amsterdam-nl/ PhD Defense PhD Defense of Wessel van Woerden Leiden University 23-02-2023 Lattice Cryptography: from Cryptanalysis to New Foundations Jury 1 hours https://scholarlypublications.universiteitleiden.nl/handle/1887/3564770 Seminar RISC Seminar Centrum Wiskunde Informatica 22-02-2023 Special RISC Seminar on Lattice-based Cryptography (on the Occasion of Wessel van Woerden's PhD defense) Organizer 3 hours https://projects.cwi.nl/crypto/risc.php?s=20230222 Symposium Symposium Post-Quantum Cryptography - Episode IV CWI and TNO 15-11-2022 NIST PQC draft standards: Dilithium and Kyber Speaker 15 min https://www.post-quantum.nl/episode4.html Seminar General Colloquium Leiden Mathematical Institute 09-06-2022 An Algorithmic Reduction Theory for Binary Codes: LLL and more Speaker 45 min https://pub.math.leidenuniv.nl/~strengtc/colloquium/ Conference Nederlands Mathematisch Congres 19-04-2022 Arakelov Random Walks, and Application in Cryptography and in Algorithmic Number Theory Speaker 20 min https://mathematischcongres.nl/nmc2022/diamant/ School DIGITAL CISPA Summer School 2021 CISPA 30-08-2021 -- 3-09-2021 An Algorithmic Reduction Theory for Binary Codes: LLL and more Speaker 60 min https://cispa.de/en/news-and-events/events-archive/2021/digital-cispa-summer-school-2021 Seminar RISC Seminar Centrum Wiskunde Informatica 20-05-2021 Schnorr's Approach to Factoring via Lattices Speaker 30 min https://projects.cwi.nl/crypto/risc.php?s=20210520 Conference PKC 2021 (Online) IACR 10-05-2021 Lattices and Factoring Invited Speaker 60 min https://pkc.iacr.org/2021/program.php https://pkc.iacr.org/2021/files/ducas.pdf https://www.youtube.com/watch?v=4aeAODBMIEs Podcast Cryptography FM 30-03-2021 Schnorr, Factoring and Lattices! 45 min https://www.cryptography.fm https://www.cryptography.fm/14 Symposium Quantum Symposium Quantum Amsterdam and Dutch Payment Association Online 25-03-2021 Quantum Resistant Cryptography: standardization and recommendation 30 min https://www.quantum.amsterdam/events/quantum-symposium/ Seminar Tutte Colloquium (Online) University of Waterloo Waterloo, Canada 18-08-2020 An Algorithmic Reduction Theory for Binary Codes: LLL and more 60 min https://uwaterloo.ca/combinatorics-and-optimization/events/tutte-colloquium-leo-ducas https://homepages.cwi.nl/~ducas/slides/tutte.pdf https://www.youtube.com/watch?v=tnZNUH4qmMM Seminar CANTA Inaugural Seminar (Online) Royal Holloway University of London Egham, London, United Kingdom 03-06-2020 An Algorithmic Reduction Theory for Binary Codes 60 min https://royalholloway.ac.uk/research-and-teaching/departments-and-schools/mathematics/canta/ Workshop Lattices: From Theory to Practice Simmons Institute, Berkeley (online) USA, CA 28-04-2020 New Reductions and Algorithms for Ideal Lattices via Arakelov Random Walks 45 min https://simons.berkeley.edu/talks/lwe-side-information-attacks-and-concrete-security-estimation Workshop Lattices: Geometry, Algorithms and Hardness Simmons Institute, Berkeley USA, CA 18-02-2020 — 21-02-2020 New Reductions and Algorithms for Ideal Lattices via Arakelov Random Walks 20 min https://simons.berkeley.edu/talks/new-reductions-and-algorithms-ideal-lattices-arakelov-random-walks School Lattices: Algorithms, Complexity, and Cryptography Boot Camp Simmons Institute, Berkeley USA, CA 21-01-2020 — 24-01-2020 Algorithms for Algebraic Lattices: Classical and Quantum 1h30 min https://simons.berkeley.edu/talks/quantum-algorithms-algebraic-lattices-pip Research Semester Lattices: Algorithms, Complexity, and Cryptography Simmons Institute, Berkeley USA, CA 15-01-2020 — 15-05-2020 45 min https://simons.berkeley.edu/programs/lattices2020 Conference Fifth London Symposium on Information Theory King’s College, London London, UK 30-05-2019 — 31-05-2019 Polynomial Time Bounded Distance Decoding near Minkowski’s Bound in Discrete Logarithm Lattices 45 min https://www.kcl.ac.uk/events/event-story?id=3b3867a6-3ceb-49fc-bf0c-640cdc930dfe Conference Awesome IT French mathematical Society Amsterdam, The Netherlands 05-04-2019 Quantum-safe Cryptography from lattices: designs and attacks 45 min https://awesomeit.nl/ School Mathematical foundations of asymetric cryptography French mathematical Society Aussois, France 17-03-2019 — 22-03-2019 Reduction Algorithms for Lattices and Ideal lattices 2x 90 min https://mathsofpkc.sciencesconf.org/resource/page/id/1 Seminar Cryptographie fondé sur les codes Inria Paris Paris, France 11-03-2019 The General Sieve Kernel and New Records in Lattice Reduction 90 min Conference Asiacrypt 2018 Technische Universiteit Einhoven Brisbane, Autralia 02-12-2018 — 06-12-2018 https://asiacrypt.iacr.org/2018/ Rump Session Chair Seminar Crypto Working Group meetings Technische Universiteit Einhoven Utrecht, The Netherlands 09-11-2018 The General Sieve Kernel and New Records in Lattice Reduction 45 min https://www.win.tue.nl/eipsi/seminars_cwg.html Seminar Séminaire Théorie des Nombres Université de Bordeaux Bordeaux, France 05-10-2018 The General Sieve Kernel and New Records in Lattice Reduction 60 min https://www.math.u-bordeaux.fr/imb/seminaire-theorie-des-nombres?year=2005 Seminar Londonish Lattice Coding and Crypto Meeting RHUL and Imperial College London, England 24-09-2018 The General Sieve Kernel and New Records in Lattice Reduction 90 min http://malb.io/discrete-subgroup/2018/09/24/lattice-meeting/ Conference CHES 2018 Amsterdam, The Netherlands IACR 2018-09-09 — 2018-09-12 https://ches.iacr.org/2018/ School Cyber in Occitanie Montpelier, France LIRMM and CNFM 2018-07-09 — 2018-07-13 http://www.lirmm.fr/cyber-in-occitanie/program/ Invited lecturer https://github.com/lducas/TP_HomEncryption Workshop Lattice Crypto and Algorithms Bertinoro (Forli-Cesena), Italy LATCA@BiCi 2018-05-20 — 2018-05-25 http://crypto-events.di.ens.fr/LATCA/index.html Invited participant Conference Africacrypt 2018 Marrakach IACR 2018-05-7 — 2018-05-9 http://africacrypt2018.aui.ma/keynote-speaker.php Keynote Speaker http://africacrypt2018.aui.ma/Presentations/Ducas_KNS.pdf Workshop Computational Challenges in the Theory of Lattices Brown, Providence, USA ICERM 2018-04-23 — 2018-04-27 https://icerm.brown.edu/programs/sp-s18/w4/ Invited Speaker Workshop FPLLL Coding Days 4 Lyon, France ENS 2017-07-06 — 2017-07-14 https://groups.google.com/forum/#!topic/fplll-devel/gzDs6gFIxrw Participant Seminar Monthly Lattice Meeting ENS Lyon Lyon, France 21-09-2017 — 22-09-2017 Shortest Vector from Lattice Sieving: a Few Dimensions for Free 90 min http://perso.ens-lyon.fr/damien.stehle/LATTICE_MEETINGS.html Workshop FPLLL Coding Days 3 Amsterdam, The Netherlands CWI 2017-07-06 — 2017-07-14 https://github.com/fplll/fplll/wiki/fplll-days-3 Organizer Conference Eurocrypt 2017 Paris, France IACR 2017-04-30 — 2017-05-04 https://eurocrypt2017.di.ens.fr/program.html PC member, Session chair Workshop Frontiers of Quantum Safe Cryptography (FOQUS) UMPS Paris, France Short Stickelberger Class Relations and application to Ideal-SVP 2017-04-28 — 2017-04-29 http://www.pcqc.fr/foqus.html Conference Public Key Cryptography 2017 Amsterdam, The Netherlands IACR 2017-03-28 — 2017-03-31 http://www.iacr.org/workshops/pkc2017/program.html PC member, Session chair School Spring School on Lattice-Based Cryptography Oxford, UK Mathematical Institute, University of Oxford 2017-03-20 — 2017-03-24 Lectures and Sage Labs 6 hours https://www.maths.ox.ac.uk/groups/cryptography/spring-school-lattice-based-cryptography https://www.maths.ox.ac.uk/groups/cryptography/spring-school-lattice-based-cryptography Seminar Monthly Lattice Meeting ENS Lyon Lyon, France 2017-03-09 Short Stickelberger Class Relations and application to Ideal-SVP 120 min http://perso.ens-lyon.fr/damien.stehle/LATTICE_MEETINGS.html Workshop Perspectives on Complexity Theory and Cryptography Mational Mathematics Initiative Bengalore, India 2017-01-11 Exploiting Quantum Algorithms against Ideal-SVP 60 min http://math.iisc.ernet.in/~nmi/PCTC_Orgcomm.php Seminar CWI Scientific Meeting CWI Amsterdam, The Netherlands 2016-12-09 Post-Quantum Cryptography from Lattices 25 min https://www.cwi.nl/events/cwi-scientific-meetings https://www.cwi.nl/system/files/main%20%286%29.pdf Workshop FPLLL Coding Days 2 Lyon, France ENS Lyon 2016-12-19 — 2016-12-22 https://github.com/fplll/fplll/wiki/fplll-days-2 Workshop Symposium Quantum Software in the Netherlands QuSoft Amsterdam, The Netherlands 2016-11-25 Post-Quantum Cryptography from Lattices 25 min http://www.qusoft.org/events/symposium-on-quantum-software/ Workshop European Cyber Week EIT Digital Rennes, France 2016-11-24 NewHope, Frodo, in Between and Beyond 30 min https://www.eitdigital.eu/international-symposium/programme/ Workshop Colloquium Coding Theory and Cryptography COSIC Brussel, Belgium 2016-11-21 Introduction to homomorphic encryption 40 min http://cage.ugent.be/~ls/website2016/colloquium2016.html Workshop Quantum-Safe Crypto Workshop Singapore Centre for Quantum Technologies, National University of Singapore NewHope, Frodo, in Between and Beyond 2016-10-03 50 min http://quantum-safe-crypto.quantumlah.org/ http://quantum-safe-crypto.quantumlah.org/Leo.pdf Workshop Workshop on Mathematics of Information — Theoretic Cryptography Singapore Institute for Mathematical Sciences, National University of Singapore Short stickelberger class relations and application to ideal-SVP 2016-09-25 45 min http://www2.ims.nus.edu.sg/Programs/016wcrypto/ http://www2.ims.nus.edu.sg/Programs/016wcrypto/files/leo.pdf Workshop Mathematical Structures for Cryptography Leiden, The Netherlands Lorrentz Center 2016-08-22 — 2016-08-26 http://www.lorentzcenter.nl/lc/web/2016/834/info.php3?wsid=834 Organizer Working Visit Visit at NXP NXP Semiconductor Leuven, Belgium 2016-07-25 What you should know on Lattice-based Cryptography to implement it 60 min Conference ISSAC 2016 Waterloo, Canada ACM 2016-07-13 Fast Fourier Orthogonalization 30 min http://www.issac-conference.org/2016/program.php Workshop Workshop HEAT: Homomorphic Encryption Applications and Technology UMPC Paris, France 2016-07-5 A subfield lattice attack on overstretched NTRU assumptions 90 min https://wheat2016.lip6.fr/ducas_wheat.pdf https://wheat2016.lip6.fr/ Workshop FPLLL Coding Days Lyon, France ENS Lyon 2016-06-20 — 2016-06-24 School African Mathematical School on Cryptography Bamenda, Cameroon 2016-06-06 — 2016-06-10 Introduction to Lattice Based Cryptography 8 hours https://github.com/lducas/bamenda http://httcbambili.com/AMS/index.php/crag-6/ Workshop Cryptographic protocols for small devices Vienna, Austria ECRYPT-CSA 2016-05-13 What you should know on Lattice-based Cryptography to implement it 60 min Slides http://smalldevices.hgi.rub.de/ Conference Eurocrypt 2016 Vienna, Austria IACR 2016-05-10 Recovering Short Generators of Principal Ideals in Cyclotomic Rings Sanitization of FHE Ciphertexts 2 x 20 min http://ist.ac.at/eurocrypt2016/slides-conf/wed/ducas.pdf http://ist.ac.at/eurocrypt2016/program.html Seminar ISG Research Seminar Royal Holloway London, UK 2016-04-26 What you should know on Lattice-based Cryptography to implement it 60 min http://www.lists.rhul.ac.uk/pipermail/isg-research-seminar/2016-April/000315.html Seminar COMMSP Seminar Imperial College London, UK 2016-04-19 New directions in nearest neighbor searching with applications to lattice sieving 60 min http://talks.ee.ic.ac.uk/talk/index/830 Seminar Séminaire CCA Inria and Telecom Paris Tech Paris, France 2015-12-11 Fast Fourier Orthogonalization 60 min https://cca.inria.fr/seminaire-cca-du-11-decembre/ Seminar Monthly Lattice Meeting ENS Lyon Lyon, France 2015-11-26 New directions in nearest neighbor searching with applications to lattice sieving 120 min http://perso.ens-lyon.fr/damien.stehle/LATTICE_MEETINGS.html School Summer School on Mathematical and Practical Aspects of Fully Homomorphic Encryption and Multi-Linear Maps HEAT Paris, France 2015-10-14 2 talks (LLL and BKZ, Recovering short gen.) 120 min https://heat-project.eu/summerschool2015.html Workshop Workshop on Tools for Asymmetric Cryptanalysis Bochum, Germany 2015-10-05 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 60 min http://cryptool.hgi.rub.de/ Workshop Elliptic Curve Cryptography INRIA Bordeaux Bordeaux, France 2015-09-29 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 60 min http://ecc2015.math.u-bordeaux1.fr/index.php Workshop Conference on Mathematics of Cryptography University of California, Irvine Irvine, USA 2015-09-02 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 60 min http://www.math.uci.edu/~asilverb/Conference2015/Schedule2015.html Seminar Seminaire Polsys LiP6, Université Pierre et Marie Curie ris, France 2015-06-26 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 60 min http://www-polsys.lip6.fr/Seminar/ School Summer school on real-world crypto and privacy Šibenik, Croatia 2015-06-05 SIS-based constructions 60 min http://summerschool-croatia15.cs.ru.nl/program.shtml Seminar Cryptography Working Group Eindhoven Institute for the protection of Systems and Information Utrecht 2015-05-22 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 45 min http://www.win.tue.nl/eipsi/cwg/aank%20mei%202015.pdf Conference Eurocrypt 2015 Sofia, Bulgaria IACR 2015-04-28 FHEW: Bootstrapping in Less than a Second 20 min https://icerm.brown.edu/video_archive/#/search Workshop Mathematics of Lattices and Cybersecurity Brown University, ICERM Providence, USA 2015-04-23 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 30 min https://icerm.brown.edu/video_archive/#/search LACAL Seminar Seminar EPFL, Lacal Lausanne, Switzerland 2015-04-14 Recovering Short Generators of Principal Ideals in Cyclotomic Rings 30 min http://lacal.epfl.ch/seminars Working Visit Lattice Sieving EPFL, Lacal Lausanne, Switzerland 2015-04-9 — 2015-04-14 Sieving Algorithm A. Becker, N. Gama, T. Laarhoven, B. Weger Seminar Monthly Lattice Meeting ENS Lyon Lyon, France 2015-02-04 Exploration of the log-unit lattice log Z[z_2^n]* 60 min http://perso.ens-lyon.fr/damien.stehle/LATTICE_MEETINGS.html