Research

My research interests are in cryptography, and specifically signatures and multi-party computation.
Recently I've been interested in policy (see Cryptographers’ Feedback on the EU Digital Identity’s ARF)--I hope to have more updates in the future!

Threshold ECDSA
For information about the "DKLs" threshold ECDSA signing schemes, we have a website! We always love hearing from people who have deployed or used our schemes... Please feel free to reach out if you know of any implementations we've missed! :)

Papers

Preprints
  • An Unstoppable Ideal Functionality for Signatures and a Modular Analysis of the Dolev-Strong Broadcast
    Ran Cohen, Jack Doerner, Eysa Lee, Anna Lysyanskaya, and Lawrence Roy
    [Paper]
  • Multi-Holder Anonymous Credentials from BBS Signatures
    Andrea Flamini, Eysa Lee, and Anna Lysyanskaya
    [Paper]
Conference Publications
  • Threshold ECDSA in Three Rounds
    Jack Doerner, Yashvanth Kondi, Eysa Lee, and abhi shelat
    IEEE S&P (Oakland) 2024
    [Paper]
  • Threshold BBS+ Signatures for Distributed Anonymous Credential Issuance
    Jack Doerner, Yashvanth Kondi, Eysa Lee, abhi shelat, and LaKyah Tyner
    IEEE S&P (Oakland) 2023
    [Paper]
  • Circuit Amortization Friendly Encodings and their Application to Statistically Secure Multiparty Computation
    Anders Dalskov, Eysa Lee, Eduardo Soria-Vazquez
    Asiacrypt 2020
    [Paper] [Code] [Slides]
  • Multiparty Generation of an RSA Modulus
    Megan Chen, Ran Cohen, Jack Doerner, Yashvanth Kondi, Eysa Lee, Schuyler Rosefield, and abhi shelat
    CRYPTO 2020
    [Paper]
  • Threshold ECDSA from ECDSA Assumptions: The Multiparty Case
    Jack Doerner, Yashvanth Kondi, Eysa Lee, and abhi shelat
    IEEE S&P (Oakland) 2019
    [Paper] [Code]
  • Secure Two-party Threshold ECDSA from ECDSA Assumptions
    Jack Doerner, Yashvanth Kondi, Eysa Lee, and abhi shelat
    IEEE S&P (Oakland) 2018
    [Paper] [Code] [Slides]
  • Signature Schemes with Randomized Verification
    Cody Freitag, Rishab Goyal, Susan Hohenberger, Venkata Koppula, Eysa Lee, Tatsuaki Okamoto, Jordan Tran, and Brent Waters
    ACNS 2017
    [Paper]
Journal Publications
  • Multiparty Generation of an RSA Modulus
    Megan Chen, Ran Cohen, Jack Doerner, Yashvanth Kondi, Eysa Lee, Schuyler Rosefield, and abhi shelat
    Journal of Cryptology (full version)
    [Paper]

Workshop Contributions

Talks
  • Saying NO! to Workplace Surveillance: Lessons from the Cybersecurity and Privacy Institute
    Speakers: Lisa Oakley, xenia dragon, Eysa Lee
    Re-Imagining Cryptography and Privacy (ReCAP) Workshop, 2024
Misc
  • crypto_doodles: cryptography through comics and jokes
    Eysa Lee
    Re-Imagining Cryptography and Privacy (ReCAP) Workshop, 2024