Elias Suvanto

publications

Authors are ordered alphabetically by last name unless marked with *.

See also Google Scholar.

peer-reviewed

2025

  1. CCS
    Leveraging Discrete CKKS to Bootstrap in High Precision
    Hyeongmin Choe, Jaehyung Kim, Damien Stehlé, and Elias Suvanto
    In ACM CCS, 2025
    PDF ePrint

2024

  1. Asiacrypt
    Bootstrapping Small Integers With CKKS
    Youngjin Bae, Jaehyung Kim, Damien Stehlé, and Elias Suvanto
    In ASIACRYPT, 2024
    PDF ePrint
  2. CCS
    Attacks Against the IND-CPAD Security of Exact FHE Schemes
    Jung Hee Cheon, Hyeongmin Choe, Alain Passelègue, Damien Stehlé, and Elias Suvanto
    In ACM CCS, 2024
    PDF ePrint Code
  3. USENIX
    Key Recovery Attacks on Approximate Homomorphic Encryption with Non-Worst-Case Noise Flooding Countermeasures*
    Qian Guo, Denis Nabokov, Elias Suvanto, and Thomas Johansson
    In USENIX Security, 2024
    PDF

preprints

2026

  1. ePrint
    Finite-Field Arithmetic in CKKS
    Tim Seuré and Elias Suvanto
    Cryptology ePrint Archive, Paper 2026/1102, 2026
    PDF ePrint

posters

2026

  1. FHE.org
    Faster Homomorphic Evaluation of SHA3
    Tim Seuré and Elias Suvanto
    Poster at FHE.org Conference, 2026
    POSTER

talks

2024

  1. Asiacrypt
    Bootstrapping Small Integers With CKKS
    Elias Suvanto
    Talk at ASIACRYPT, Kolkata, 2024
    Slides
  2. CCS
    Attacks Against the IND-CPAD Security of Exact FHE Schemes
    Elias Suvanto
    Talk at ACM CCS, Salt Lake City, 2024
    Slides

cv

Basics

Name Elias Suvanto
Email elias.suvanto@uni.lu
Personal email elias@suvan.to

Education

  • Dec 2023 - Present
    PhD in Cryptography
    Université du Luxembourg, Luxembourg
    Supervised by Prof. Jean-Sébastien Coron
  • 2021 - 2023
    MSc in Computer Science
    ENS de Lyon, France
    Major: Cryptography
  • 2019 - 2022
    Double Bachelor - Computer Science & Mathematics
    ENS de Lyon & Université Claude Bernard Lyon 1, France

Work experience

  • Sep 2025 - Present
    Doctoral Researcher
    University of Luxembourg, Applied Crypto Group
    Luxembourg
    • Research on extensions of discrete CKKS.
    • Developing an open-source implementation of thesis work on Poulpy.
  • Sep 2023 - May 2025
    PhD Student & Research Engineer
    FHElab & CryptoLab Inc.
    Lyon, France / Seoul, South Korea
    • Implemented attacks against major FHE schemes.
    • Implemented functional bootstrapping into CryptoLab Inc.'s GPU-accelerated FHE library HEaaN.
    • Implemented high precision bootstrapping into HEaaN.
  • May - July 2023
    Research Intern
    Seoul National University, Jung Hee Cheon's lab / IMDARC
    Seoul, South Korea
    • Investigated methods for performing homomorphic computation over discrete data with CKKS.
  • Aug - Dec 2022
    Research Intern
    CryptoLab Inc.
    Seoul, South Korea
    • Analyzed IND-CPAD security of CKKS and mitigations.
  • Feb - Jul 2022
    Research Intern
    Lund University
    Lund, Sweden
    • Designed a key-recovery attack against CKKS with noise flooding based on an incorrect noise estimate.
  • May - Jul 2021
    Research Intern
    University of Luxembourg
    Luxembourg
    • Studied side-channel attacks on GLP, a lattice-based signature scheme and precursor to Dilithium.
  • Jun - Jul 2020
    Research Assistant
    IMAG
    Grenoble, France
    • Implemented scheduling algorithms in Rust.

Awards

  • 2024
    First Prize, Korean National Cryptography Contest
    National Security Research Institute (NSRI) / National Intelligence Service (NIS)

Services

Artifact Evaluation Committee
USENIX Security 2025
Additional reviewer
Eurocrypt 2025, 2026
Asiacrypt 2025
Event Organization & Volunteering
ITYM 2018, staff organizer
Eurocrypt 2023, volunteer