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Chitchanok Chuengsatiansup

Post-doctoral researcher
Inria and ENS de Lyon, France

chitchanok [dot] chuengsatiansup [at] ens-lyon [dot] fr


Research Interests
PC Membership
Honors & Awards
Language Skills

I am currently a post-doctoral research at Inria and ENS de Lyon, France.
I work with Damien Stehlé on RISQ project (Regroupement de l'Industrie française pour la Sécurité post-Quantique).

Before that, I was a Ph.D. student in Cryptographic Implementations group, Technische Universiteit Eindhoven, The Netherlands.
Before that, I was a master student in Imai's Laboratory, The University of Tokyo, Japan.

My resume is available in English and French.


  • Ph.D. thesis: Optimizing Curve-Based Cryptography [PDF]
    supervised by Daniel J. Bernstein and Tanja Lange, Technische Universiteit Eindhoven, The Netherlands

  • Master thesis: Improved Elliptic Curve Arithmetic by Reordering Operation Sequences (演算順序変更による楕円曲線算術の改善) [PDF]
    supervised by Hiroshi Imai, The University of Tokyo, Japan


Research interests

  • Elliptic- and Hyperelliptic-Curve Cryptography
  • Pairing-Based Cryptography
  • Post-Quantum Cryptography
  • Lattice-Based Cryptography
  • Side-Channel Analysis
  • Security and Privacy
  • Secure Messaging
  • Factorization



  • Pairing-Friendly Twisted Hessian Curves
    Chitchanok Chuengsatiansup and Chloe Martindale. Indocrypt 2018. [PDF]

  • NTRU Prime: reducing attack surface at low cost
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, Tanja Lange, and Christine van Vredendaal. SAC 2017. [PDF]

  • How to manipulate curve standards: a white paper for the black hat
    Daniel J. Bernstein, Tung Chou, Chitchanok Chuengsatiansup, Andreas Huelsing, Eran Lambooij, Tanja Lange, Ruben Niederhagen, and Christine van Vredendaal. SSR 2015. [PDF]

  • Twisted Hessian curves
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, David Kohel, and Tanja Lange. Latincrypt 2015. [PDF]

  • Kummer strikes back: new DH speed records
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, Tanja Lange, and Peter Schwabe. Asiacrypt 2014. [PDF]

  • Curve41417: Karatsuba revisited
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, and Tanja Lange. CHES 2014. [PDF]

  • PandA: Pairings and Arithmetic
    Chitchanok Chuengsatiansup, Michael Naehrig, Pance Ribarski, and Peter Schwabe. Pairing 2013. [PDF]

  • Faster Elliptic Curve Arithmetic for Double-Base Chain by Reordering Sequences of Field Operations
    Chitchanok Chuengsatiansup. ISITA 2012. [PDF]

  • Evaluating Optimized Computation in Double-Base Chain for Efficient Elliptic Curve Cryptography
    Chitchanok Chuengsatiansup, Hiroshi Imai, and Vorapong Suppakitpaisarn. WAAC 2012. [PDF]


Technical reports and preprints

  • Double-base scalar multiplication revisited
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, and Tanja Lange. [PDF]

  • NTRU Prime
    Daniel J. Bernstein, Chitchanok Chuengsatiansup, Tanja Lange, and Christine van Vredendaal. [PDF]

  • Efficient Atomic Block for Faster Elliptic Curve Scalar Multiplication
    Chitchanok Chuengsatiansup. Technical Report of IEICE, vol.112, no.93, pp.71-78, Jun.2012. [PDF]

  • How to Write Award-Winning Papers: Mining Award-Winning Paper Characteristics
    Chitchanok Chuengsatiansup. TJIA 2011. [PDF]



  • Pairing-Friendly Twisted Hessian Curves [PDF]
    Indocrypt 2018

  • Fast arithmetic on Hessian curves [PDF]
    ECC 2016 (invited talk)

  • Fast and secure DH implementation [PDF]
    CrossFyre 2016

  • Pond - a non-instant messaging protocol by Adam Langley [PDF]
    Privacy and Surveillance Seminar, UC Davis, USA

  • New Diffie-Hellman Speed Records [PDF]
    Crypto Working Group meeting, Utrecht, The Netherlands

  • Kummer strikes back: new DH speed records [PDF]
    Asiacrypt 2014

  • Curve41417: Karatsuba Revisited [PDF]
    CHES 2014

  • Faster Point Doubling on Twisted Hessian Curves [PDF]
    Latincrypt 2014 (student presentation)


Program-committee memberships

  • Kangacrypt 2018 [website]
    December 7-8, 2018, Adelaide, Australia

  • Crypto 2018 [website]
    August 19-23, 2018, University of California, Santa Barbara, USA


Honors and awards (selected)

  • Finalist of Google Hash Code, 2018 [website]
    Chitchanok Chuengsatiansup, Fabrice Mouhartem, Michaël Rao, and Baptiste Rozière

  • Winner of iDASH Genome Privacy Challenge (Track 1), 2017 [website]
    Fabrice Benhamouda, Chitchanok Chuengsatiansup, Gilad Asharov, Benny Pinkas, and Tal Rabin

  • IST Research Visit Scholarship (海外派遣プログラム), 2012 [website]
    Chitchanok Chuengsatiansup

  • Japanese Government Scholarship (文部科学省), 2010-2013 [website]
    Chitchanok Chuengsatiansup

  • Winner of 12th RoboCup World Championship, 2008 [website]
    Engineering Innovation Club of Chulalongkorn University

  • Bronze Prize of SAMART Innovation Awards, 2008 [website]
    Chitchanok Chuengsatiansup


Language skills

  • Thai: Fluent (Native)
  • English: Fluent
  • Japanese: Very good
  • French: Good
  • Dutch: Basic conversation
  • Mandarin: Basic conversation
  • German: Basic conversation