Jake Januzelli and Jiayu Xu.
A Complete Characterization of One-More Assumptions In the Algebraic Group Model.
ASIACRYPT 2025 (to appear). [ePrint]
Mario Yaksetig, Stephen Yang, Mahdi Nejadgholi, Pedro Pereira, and Jiayu Xu.
Rayls II: Fast, Private, and Compliant CBDCs.
FCiR 2025 (to appear). [ePrint]
Ian McQuoid, Mike Rosulek, and Jiayu Xu.
How to Tolerate Typos in Strong Asymmetric PAKE.
Jake Januzelli, Lawrence Roy, and Jiayu Xu.
Under What Conditions Is Encrypted Key Exchange Actually Secure?
Mario Yaksetig and Jiayu Xu.
Rayls: A Novel Design for CBDCs.
Franklin Harding and Jiayu Xu.
Unforgeability of Blind Schnorr in the Limited Concurrency Setting.
CiC Volume 1, Issue 3 (also appeared in ArcticCrypt 2025). [paper] [ePrint]
Yanqi Gu, Stanisław Jarecki, Paweł Kędzior, Phillip Nazarian, and Jiayu Xu.
Threshold PAKE with Security against Compromise of all Servers.
ASIACRYPT 2024. [paper] [ePrint]
Stefan Dziembowski, Stanisław Jarecki, Paweł Kędzior, Hugo Krawczyk, Chan Nam Ngo, and Jiayu Xu.
Password-Protected Threshold Signatures.
ASIACRYPT 2024. [paper] [ePrint]
Ian McQuoid and Jiayu Xu.
An Efficient Strong Asymmetric PAKE Compiler Instantiable from Group Actions.
ASIACRYPT 2023. [paper] [ePrint]
Lawrence Roy and Jiayu Xu.
A Universally Composable PAKE with Zero Communication Cost (And Why It Shouldn’t Be Considered UC-Secure).
PKC 2023. [paper] [ePrint]
Chris Peikert and Jiayu Xu.
Classical and Quantum Security of Elliptic Curve VRF, via Relative Indifferentiability.
CT-RSA 2023. [paper] [ePrint]
Julia Kastner, Julian Loss, and Jiayu Xu.
The Abe-Okamoto Partially Blind Signature Scheme Revisited.
Ian McQuoid, Mike Rosulek, and Jiayu Xu.
How to Obscure MPC Inputs.
S. Dov Gordon, Jonathan Katz, Mingyu Liang, and Jiayu Xu.
Spreading the Privacy Blanket: Differentially Oblivious Shuffling for Differential Privacy.
Julia Kastner, Julian Loss, and Jiayu Xu.
On Pairing-Free Blind Signature Schemes in the Algebraic Group Model.
Manuel Abdalla, Michel Barbosa, Jonathan Katz, Julian Loss, and Jiayu Xu.
Algebraic Adversaries in the Universal Composability Framework.
Stanisław Jarecki, Hugo Krawczyk, and Jiayu Xu.
On the (In)Security of the Diffie-Hellman Oblivious PRF with Multiplicative Blinding.
Jonathan Katz, Julian Loss, and Jiayu Xu.
On the Security of Time-lock Puzzles and Timed Commitments.
Manuel Abdalla, Michel Barbosa, Tatiana Bradley, Stanisław Jarecki, Jonathan Katz, and Jiayu Xu.
Universally Composable Relaxed Password Authenticated Key Exchange.
Tatiana Bradley, Stanisław Jarecki, and Jiayu Xu.
Strong Asymmetric PAKE Based on Trapdoor CKEM.
Tatiana Bradley, Jan Camenisch, Staniaław Jarecki, Anja Lehmann, Gregory Neven, and Jiayu Xu.
Password-Authenticated Public-Key Encryption.
Jung Yeon Hwang, Stanisław Jarecki, Taekyoung Kwon, Joohee Lee, Ji Sun Shin, and Jiayu Xu.
Round-Reduced Modular Construction of Asymmetric Password-Authenticated Key Exchange.
Stanisław Jarecki, Hugo Krawczyk, and Jiayu Xu.
OPAQUE: An Asymmetric PAKE Protocol Secure Against Pre-Computation Attacks.
Our protocol was recommended by the Crypto Forum Research Group (CFRG) for usage in IETF protocols in 2020.
WhatsApp’s implementation of our protocol in their end-to-end encrypted backups.
See Matthew Green's wonderful summary of our work!
Stanisław Jarecki, Aggelos Kiayias, Hugo Krawczyk, and Jiayu Xu.
TOPPSS: Cost-Minimal Password-Protected Secret Sharing Based on Threshold OPRF.
Stanisław Jarecki, Aggelos Kiayias, Hugo Krawczyk, and Jiayu Xu.
Highly-Efficient and Composable Password-Protected Secret Sharing (Or: How to Protect Your Bitcoin Wallet Online).