## 2023

### Seminars

- 1er février 2023 séminaire GREYC, Caen,
*Factoring RSA of 240 decimal digits and computing discrete logarithms in a 240-decimal-digit prime field with the same software and hardware*, slides, paper (open access), source code.

### 1 scientifique 1 classe chiche

## 2022

### Seminars

- September 14, 2022: Nancy
*Journées au vert*,*Co-factor Clearing and Subgroup Membership Testing on Pairing-Friendly Curves*, Slides. - July 4, 2022: Aarhus Crypto Day,
*Co-factor clearing and subgroup membership testing in pairing groups*, Slides. - June 24, 2022: Nancy, Caramba Seminar,
*A survey of elliptic curves for proof systems*, Slides, preprint, SageMath source code. - May 4, 2022: Aarhus, Crypto and Security Group Seminar,
*Pairings and pairing-friendly elliptic curves for Cryptography, an Introduction*, Slides.

### 1 scientifique 1 classe chiche

## 2021

### Conference Talk

- March 26, 2021 Journées GDR-IM, online event, France,
*Factoring RSA of 240 decimal digits and computing discrete logarithms in a 240-decimal-digit prime field with the same software and hardware*, Slides, paper (open access), source code.

### Seminars

- April 20, 2021: Toulon, séminaire IMATH,
*Understanding the special tower number field sieve algorithm and applications to pairing-based cryptography*, Slides, paper (open access), source code. - May 18, 2021: Bordeaux, séminaire LFANT,
*Computing Murphy-alpha in the special tower number field sieve algorithm, and applications*, Slides, paper (open access), source code. - June 29, 2021: Nancy,
*The knapsack algorithm in analytical chemistry*, Slides, preprint, source code (LGPL). - July 2, 2021: Aarhus Crypto Summer Days,
*The knapsack algorithm in analytical chemistry*, Slides, preprint, source code (LGPL). - September 23, 2021: Computer Science seminar, Aarhus,
*The knapsack algorithm in analytical chemistry*, Slides, toy example in Python, preprint, source code (LGPL).

## 2020

### Invited Talk

- November 26, 2020, Diamant, online event, Utrecht, The Netherlands,
*Factoring RSA of 240 decimal digits and computing discrete logarithms in a 240-decimal-digit prime field with the same software and hardware*, Slides, preprint, source code.

### Conference Talk

- June 2020, 4th, PKC 2020, IACR International Conference on Practice and Theory of Public-Key Cryptography, online conference, Edinburgh, United Kingdom.
*A short-list of pairing-friendly curves resistant to Special TNFS at the 128-bit security level*. slides, Video, preprint, DOI.

### Seminar

- December 2020, 10th, Aarhus Crypto and Security Group Seminar, online event, Aarhus University, Denmark,

## 2019

### Conference Talks

- July 2019, 10th,
*SIAM conference on applied algebraic geometry, Bern, Switzerland*, MS134 part 4: coding theory and cryptography,*Pairing-friendly curves in cryptography and the special tower number field sieve algorithm*. Slides, preprint, source code in Magma and Sage. - April 2019, 17th,
*WRAC’H workshop, Roscoff, Brittany, France*, A comparison of pairing-friendly curve key-sizes at the 192-bit security level. Slides.

### Seminars

- June 2019, 21st,
*Sorbonne Université, Jussieu, Paris, France, séminaire C2*, A first step toward an implementation of the Tower Number Field Sieve: selecting polynomials. Slides, preprint, source code in Magma and Sage. - March 2019, 1st,
*Université de Rennes 1, France, séminaire de cryptographie,*Discrete logarithm computation in finite fields GF(*p*) with NFS variants and consequences in pairing-based cryptography. Slides^{n} - February 2019, 28th,
*Loria – Inria Nancy, France, séminaire sécurité du Loria,*Discrete logarithm computation in finite fields GF(*p*) with NFS variants and consequences in pairing-based cryptography. (see the Slides of Rennes)^{n} - February 2019, 12th,
*Université de Franche-Comté, France, séminaire de théorie des nombres,*Calculs de logarithmes discrets dans**F**_{pn}avec le crible de corps de nombres. Slides

### Others

- June 11 and 13, 2019, Inria Nancy. An introduction to NFS for discrete logarithm computation, with small examples in SageMath. Slides. SageMath code (.zip).
- December 2, 2019, ECC 2019, Bochum, Germany. Rump session: 1001 ways to fail record computations. Slides.

## 2017

### Invited talk

- November 2017,
*ECC 2017, Neijmegen, Netherlands*, Estimating size requirements for pairings: simulating the Tower-NFS algorithm in GF(*p*). slides.^{n}

## 2016

### Invited talk

- August 2016,
*Mathematical structures for cryptography workshop, Lorentz Center, Leiden, Netherlands*, Consequences for pairing-based cryptography of the recent improvements on discrete logarithm computation in GF(*p*). slides.^{n}

### Conference Talks

- August 2016,
*SAC 2016**Selected Areas in Cryptography, St. John’s, Newfoundland, Memorial University, Canada, August 10-12, 2016*, Solving discrete logarithms on a 170-bit MNT curve by pairing reduction. Slides, Preprint. - June 2016,
*2016 CMS Summer Meeting**, Summer meeting of the Canadian Mathematical Society, Edmonton, University of Alberta, Canada, June 24-27, 2016*, Faster Individual Discrete Logarithms in non-prime finite fields GF(*p*) with the NFS and FFS algorithms. Slides, Preprint.^{n} - June 2016,
*CNTA XIV, 2016**, 14th meeting of the Canadian Number Theory Asociation, Calgary, Alberta, Canada, June 20-24, 2016*, Discrete Logarithm Record in a 508-bit finite field GF(*p*) with the NFS algorithm. Slides, Preprint.^{3}

### Seminars

- April 2016, 21th,
*Radboud University, Nijmegen, Netherlands,*Discrete logarithm computation record in a finite field GF(*p*) of 508 bits with the Number Field Sieve algorithm.^{3} - April 2016, 13th,
*Université de Neuchâtel, Switzerland*. - March 23rd,
*Number Nosh Seminar, University of Calgary,*Point counting on genus two curves: Schoof-Elkies-Atkin variant (feed-back from a workshop at IPAM, UCLA). - February 10th,
*Number Nosh Seminar, University of Calgary,*Computing discrete logarithms in finite fields with the Number Field Sieve algorithm. - January 27th,
*Number Nosh Seminar, University of Calgary,*Computing discrete logarithms in finite fields with the Number Field Sieve algorithm.

## 2015

### Invited talks

- October 2015,
*CATREL Workshop, Palaiseau, France*, Computing individual discrete logarithms faster in GF(*p*) with the Number Field Sieve algorithm. slides.^{n} - September 2015,
*Elliptic Curve Cryptography (ECC) Conference, Bordeaux, France*, Computing individual discrete logarithms faster in GF(*p*) with the Number Field Sieve algorithm. slides.^{n}

### Conference Talks

- November 2015,
*ASIACRYPT 2015,**Auckland, New Zealand, November 29-December 3,*Computing Individual Discrete Logarithms Faster in GF(*p*) with the NFS-DL algorithm. Slides, Preprint.^{n} - October 2015,
*Journées Codage et Cryptographie (JC2), La Londe Les Maures, France,*Calculs de logarithmes discrets dans GF(*p*) à l’aide du crible de corps de nombres (NFS-DL), applications à^{k}*k*=2,3,4,6. - May 2015,
*AGCT 2015**, CIRM, Luminy, France*Improving NFS for the discrete logarithm problem in non-prime finite fields, polynomial selection and individual logarithm. Slides. - April 2015,
*EUROCRYPT 2015, Sofia, Bulgaria,*Improving NFS for the discrete logarithm problem in non-prime finite fields. Slides, Preprint.

### Seminars

- December 2015, 15th,
*GRACE Team*GT*, Christmas Special,*Fin de post-doc - November 2015, 26th
*Université de Versailles, Séminaire de cryptographie et sécurité informatique,*Individual discrete logarithms in non-prime finite fields. - November 2015, 13th,
*Université de Rennes, Séminaire de Cryptographie,*Individual discrete logarithms in non-prime finite fields. - October 2015, 10th,
*Université de Limoges, Séminaire Protection de l’Information, Codage, Cryptographie,*Individual discrete logarithms in non-prime finite fields. - March 2015,
*Université d’Aix Marseille, Séminaire Arithmétique et Théorie de l’Information,*Polynomial selection for NFS-DL in non-prime finite fields. - February 2015,
*Université de Toulon, séminaire d’Informatique et Algèbre Appliquée, IMATH,*Polynomial selection for NFS-DL in non-prime finite fields. - January 2015,
*Université de Caen, séminaire Cryptologie et Sécurité, GREYC,*Polynomial selection for NFS-DL in non-prime finite fields.

## 2014

### Seminar

- November 2014,
*Séminaire Codage, Cryptographie, Algorithmes (CCA), Paris, France,*Polynomial selection for NFS-DL in non-prime finite fields.

## 2013

### Invited talk

- September 2013,
*ECC Conference, Leuven, Belgium*, Four dimensional GLV via the Weil restriction. slides.

### Conference Talk

- June 2013,
*ACNS, Banff, Alberta, Canada,*Comparing the Pairing Efficiency over Composite-Order and Prime-Order Elliptic Curves. Preprint

## 2012

### Conference Talks

- October 2012,
*Journées Codage et Cryptographie, Dinard, France,*Comparing the Pairing Efficiency over Composite-Order and Prime-Order Elliptic Curves. - September 2012,
*YACC, Porquerolles, France,*Comparing the Pairing Efficiency over Composite-Order and Prime-Order Elliptic Curves. - May 2012,
*Pairing 2012, Cologne, Germany,*Improved Broadcast Encryption Scheme with Constant-Size Ciphertext.Preprint - May 2012,
*Pairing 2012, Cologne, Germany,*Genus 2 Hyperelliptic Curve Families with Explicit Jacobian Order Evaluation and Pairing-Friendly Constructions.Preprint