Daniel Collins' Website

Now hosted here

About Me:

I will be starting a postdoc working under Vassilis Zikas and Juan Garay in June 2024.
I obtained a PhD from EPFL, Switzerland in cryptography under the supervision of Serge Vaudenay in April 2024; I worked at EPFL from September 2019 to April 2024.
Previously, I studied Mathematics and Computer Science at the University of Sydney, where I spent time under the supervision of Vincent Gramoli in distributed computing which culminated in an Honours thesis.
So far, I work on or have worked on the following topics:

Please feel free to get in touch if you would like to chat or collaborate.


  1. K-Waay: Fast and Deniable Post-Quantum X3DH without Ring Signatures
    Daniel Collins, Loïs Huguenin-Dumittan, Ngoc Khanh Nguyen, Nicolas Rolin, Serge Vaudenay
    USENIX Security 2024
  2. WhatsUpp with Sender Keys? Analysis, Improvements and Security Proofs
    David Balbás, Daniel Collins, Phillip Gajland
    ASIACRYPT 2023, Poster at USENIX Security 2023
    [preprint] [poster]
    [preliminary version] (Best Paper Runner-Up at RECSI 2022)
  3. Network-Agnostic Security Comes (Almost) for Free in DKG and MPC
    Renas Bacho, Daniel Collins, Chen-Da Liu-Zhang, Julian Loss
    CRYPTO 2023
    [preprint] [talk] [slides]
  4. On Active Attack Detection in Messaging with Immediate Decryption
    Khashayar Barooti, Daniel Collins, Simone Colombo, Loïs Huguenin-Dumittan, Serge Vaudenay
    CRYPTO 2023
    [preprint] [talk] [slides]
  5. Cryptographic Administration for Secure Group Messaging
    David Balbás, Daniel Collins, Serge Vaudenay
    USENIX Security 2023
  6. Near Collision Attack Against Grain v1
    Subhadeep Banik, Daniel Collins, Willi Meier
    ACNS 2023
  7. A Small GIFT-COFB: Lightweight Bit-Serial Architectures
    Andrea Caforio, Daniel Collins, Subhadeep Banik, Francesco Regazzoni
  8. Optimal Symmetric Ratcheting for Secure Communication
    Hailun Yan, Serge Vaudenay, Daniel Collins, Andrea Caforio
    The Computer Journal (2022)
  9. Improving First-Order Threshold Implementations of SKINNY
    Andrea Caforio, Daniel Collins, Ognjen Glamocanin, Subhadeep Banik
    INDOCRYPT 2021
  10. Online Payments by Merely Broadcasting Messages
    Daniel Collins, Rachid Guerraoui, Jovan Komatovic, Petr Kuznetsov, Matteo Monti, Matej Pavlovic, Yvonne-Anne Pignolet, Dragos-Adrian Seredinschi, Andrei Tonkikh, Athanasios Xygkis
    DSN 2020 (Best Paper Runner-Up)
  11. Anonymity Preserving Byzantine Vector Consensus
    Christian Cachin, Daniel Collins, Tyler Crain, Vincent Gramoli
    ESORICS 2020
    [preprint] [talk]

Selected talks:

PhD Thesis:

Selected research visits:

Where I can be found: