Benjamin Wesolowski

mathematics & cryptography
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Preprints
  1. Efficient verifiable delay functions
    Cryptology ePrint Archive 2018 > preprint

Journal and conference papers
  1. Horizontal isogeny graphs of ordinary abelian varieties and the discrete logarithm problem
    With Dimitar Jetchev
    Acta Arithmetica (in press) > preprint
  2. A new perspective on the powers of two descent for discrete logarithms in finite fields
    With Thorsten Kleinjung
    ANTS-XIII, Thirteenth Algorithmic Number Theory Symposium (2018) > preprint
  3. Generating subgroups of ray class groups with small prime ideals
    ANTS-XIII, Thirteenth Algorithmic Number Theory Symposium (2018) > preprint
  4. Isogeny graphs of ordinary abelian varieties
    With Ernest Hunter Brooks and Dimitar Jetchev
    Research in Number Theory (2017) > open access
  5. Loop-abort faults on supersingular isogeny cryptosystems
    With Alexandre Gélin
    PQCrypto 2017 > preprint
  6. Short Stickelberger class relations and application to Ideal-SVP
    With Ronald Cramer and Léo Ducas
    Eurocrypt 2017 (honorable mention) > preprint
  7. Trustworthy public randomness with sloth, unicorn, and trx
    With Arjen K. Lenstra
    International Journal of Applied Cryptography (2016) > preprint
  8. Malleability of the blockchain’s entropy
    With Cécile Pierrot
    ArcticCrypt 2016 > preprint
  9. Ciphertext-policy attribute-based broadcast encryption with small keys
    With Pascal Junod
    ICISC 2015 > preprint

Workshops and invited talks
  1. An efficient verifiable delay function
    Ethereum Foundation and Stanford Center for Blockchain Research workshop at Stanford, CA, USA (August 2018)
  2. Horizontal isogeny graphs of ordinary abelian varieties and the discrete logarithm problem
    Séminaire de Cryptographie, Rennes, France (February 2018) > slides
  3. Mildly short vectors in cyclotomic ideal lattices in quantum polynomial time
    CARAMBA seminar, Nancy, France (January 2018) > slides
  4. Isogeny graphs of ordinary abelian varieties
    ECC 2017, 21st Workshop on Elliptic Curve Cryptography, Nijmegen, The Netherlands (November 2017) > slides
    Best presentation award
  5. Isogeny graphs of ordinary abelian varieties
    LFANT seminar, Bordeaux, France (May 2017) > slides
  6. Graphes d'isogénies de variétés abéliennes ordinaires
    Journées Codage et Cryptographie, La Bresse, France (April 2017) > slides (french)
  7. Randomness on the blockchain
    RISC seminars, CWI Cryptology Group, Amsterdam, Netherlands (September 2016) > slides
  8. Trust, and public entropy: a unicorn hunt
    NIST Workshop on Random Bit Generation, Gaithersburg, MD, USA (May 2016) > slides
  9. A random zoo: sloth, unicorn and trx
    ALMASTY seminars, Université Pierre et Marie Curie, Paris, France (December 2015) > slides (french)
  10. A random zoo: sloth, unicorn and trx
    Journées Codage et Cryptographie, La Londe-les-Maures, France (October 2015)
  11. A random zoo: sloth, unicorn and trx
    NIST Workshop on Elliptic Curve Cryptography Standards, Gaithersburg, MD, USA (June 2015) > slides
  12. Random self-reducibility of the discrete logarithm problem in genus 2 > slides
    LACAL@RISC Seminar on Cryptologic Algorithms, CWI Amsterdam, Netherlands (February 2015)
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