Publications & Selected Work

  • Lattice-based Obfuscation from NTRU and Equivocal LWE. To appear in Crypto 2025. [eprint]
    Valerio Cini, Russell W. F. Lai, Ivy K. Y. Woo
  • Partial Lattice Trapdoors: How to Split Lattice Trapdoors, Literally. [eprint]
    Martin R. Albrecht, Russell W. F. Lai, Oleksandra Lapiha, Ivy K. Y. Woo
  • Lattice-based Proof-Friendly Signatures from Vanishing Short Integer Solutions. PKC 2025. [eprint]
    Adrien Dubois, Michael Klooß, Russell W. F. Lai, Ivy K. Y. Woo
  • Lattice-based Multi-Authority/Client Attribute-based Encryption for Circuits. CiC 2024 (4). [link]
    Valerio Cini, Russell W. F. Lai, Ivy K. Y. Woo
  • Evasive LWE Assumptions: Definitions, Classes, and Counterexamples. Asiacrypt 2024. [eprint] [slides]
    Chris Brzuska, Akin Ünal, Ivy K .Y. Woo
  • Traitor Tracing without Trusted Authority from Registered Functional Encryption. Asiacrypt 2024. [eprint]
    Pedro Branco, Russell W. F. Lai, Monosij Maitra, Giulio Malavolta, Ahmadreza Rahimi, Ivy K. Y. Woo
  • On Sustainable Ring-based Anonymous Systems. CSF 2023. [eprint] [slides]
    Sherman S. M. Chow, Christoph Egger, Russell W. F. Lai, Viktoria Ronge, Ivy K. Y. Woo
  • On Defeating Graph Analysis of Anonymous Transactions. PoPETs 2022. [eprint] [slides-longversion]
    Christoph Egger, Russell W. F. Lai, Viktoria Ronge, Ivy K. Y. Woo, Hoover H. F. Yin
    – Runners-up of the Andreas Pfitzmann Best Student Paper Award –

Teaching

  • 2025 Spring (Period III-IV): Head TA, CS-E4370 Applied Cryptography
  • 2024 Spring (Period IV): Head TA, MS-A0402 Foundations of Discrete Mathematics
  • 2023 Autumn (Period I-II): TA, CS-E4340 Cryptography
  • 2023 Spring (Period III-IV): Head TA, MS-E1687 Advanced Topics in Cryptography – Lattice

Service

  • External reviewer of:
    Crypto ’25-’24, Eurocrypt ’25-’24, PKC ’25, Asiacrypt ’24-’23, ITCS ’24, CCS ’23, CT-RSA ’23, SCN ’22

Selected Talks

  • 12/2024: Asiacrypt, Kolkata, India (online)
  • 12/2024: Guest talk at KCL Cybersecurity Group, London, U.K.
  • 07/2023: 36th Computer Security Foundations Symposium (CSF), Dubrovnik, Croatia
  • 07/2023: Guest talk at MPI-SP, Bochum, Germany
  • 07/2022: 22th Privacy Enhancing Technologies Symposium (PETS), Sydney, Australia
  • 03/2022: Crypto seminar, Alfréd Rényi Institute of Mathematics, Hungary (online)
  • 09/2021: CS forum, Aalto University, Finland [info]

Past Studies

  • 10/2018–09/2020   MSc. at Ulm University, Germany
    Major: Actuarial Science
  • 09/2012–12/2017   BSc. at The University of Hong Kong, Hong Kong
    Major: Actuarial Science; Minor: Food and Nutritional Science