Invited Talks & Posters

2024

• High Throughput Lattice-based Signatures on GPUs: Comparing Falcon and Mitaka

  • Talk in the Brainlink X-Lab Day 2024 workshop Security, Privacy, and Trust in AI

• Quantum-Safe HIBE: Does It Cost a Latte?

  • Seminar in the Macquarie University Cyber Security Hub

2023

• Securing Communications in the Post-Quantum Era

  • Raymond K. Zhao, Sara Jafarbeiki

  • Tutorial at AsiaCCS 2023

• Scalable and Efficient Hybrid QKD with Post-quantum Authentications

  • Raymond K. Zhao, Dongxi Liu, Josef Pieprzyk

  • Poster at Quantum Australia 2023

Academic Conference Committee

2025

• AsiaCCS 2026

2024

• TCCS 2024

• ICISC 2024

• CCS 2024 Artifact Evaluation

2023

• Asiacrypt 2023

Research

2026

• When Security Meets Usability: An Empirical Investigation of Post-Quantum Cryptography APIs

  • Marthin Toruan, R.D.N. Shakya, Samuel Tseitkin, Raymond K. Zhao, Nalin Arachchilage

  • To appear in USEC 2026

2025

• Pegasus and PegaRing: Efficient (Ring) Signatures from Sigma-Protocols for Power Residue PRFs with (Q)ROM Security

  • Xinyu Zhang, Ziyi Li, Ron Steinfeld, Raymond K. Zhao, Joseph K. Liu, Tsz Hon Yuen

  • Preprint

  • Source Code

• Nosy Layers, Noisy Fixes: Tackling DRAs in Federated Learning Systems using Explainable AI

  • Meghali Nandi, Arash Shaghaghi, Nazatul H. Sultan, Gustavo Batista, Raymond K. Zhao, Sanjay Jha

  • AsiaCCS 2025

• Enabling Quantum-Resistant EDHOC: Design and Performance Evaluation

  • Lidia Pocero Fraile, Georgios Tasopoulos, Christos Koulamas, Raymond K. Zhao, Nazatul H. Sultan, Francesco Regazzoni, Apostolos P. Fournaris

  • IEEE Access

2024

• MIKA: A Minimalist Approach to Hybrid Key Exchange

  • Raymond K. Zhao, Nazatul H. Sultan, Phillip Yialeloglou, Dongxi Liu, David Liebowitz, Josef Pieprzyk

  • PST 2024

  • Source Code

• LUNA: Quasi-Optimally Succinct Designated-Verifier Zero-Knowledge Arguments from Lattices

  • Ron Steinfeld, Amin Sakzad, Muhammed F. Esgin, Veronika Kuchta, Mert Yassi, Raymond K. Zhao

  • CCS 2024

• High Throughput Lattice-based Signatures on GPUs: Comparing Falcon and Mitaka

  • Wai-Kong Lee, Raymond K. Zhao, Ron Steinfeld, Amin Sakzad, Seong Oun Hwang

  • IEEE Transactions on Parallel and Distributed Systems

• Quantum-safe HIBE: does it cost a Latte?

  • Raymond K. Zhao, Sarah McCarthy, Ron Steinfeld, Amin Sakzad, Máire O’Neill

  • IEEE Transactions on Information Forensics and Security

  • Full Version

  • Source Code

• Quantum Key Distribution

  • Jiafan Wang, Raymond Zhao, Dongxi Liu

  • Australian patent 2024901225

  • Source Code

2023

• A New Look at Blockchain Leader Election: Simple, Efficient, Sustainable and Post-Quantum

  • Muhammed F. Esgin, Oguzhan Ersoy, Veronika Kuchta, Julian Loss, Amin Sakzad, Ron Steinfeld, Wayne Yang, Raymond K. Zhao

  • AsiaCCS 2023

  • Source Code

• Energy Consumption Evaluation of Post-Quantum TLS 1.3 for Resource-Constrained Embedded Devices

  • George Tasopoulos, Charis Dimopoulos, Apostolos P. Fournaris, Raymond K. Zhao, Amin Sakzad, Ron Steinfeld

  • MAL-IoT 2023

• eMLE-Sig 2.0: A Signature Scheme based on Embedded Multilayer Equations with Heavy Layer Randomization

  • Dongxi Liu, Raymond K. Zhao

  • Submitted to the NIST Post-Quantum Cryptography: Additional Digital Signature Schemes

  • Submission Package

  • Source Code

2022

• Performance Evaluation of Post-Quantum TLS 1.3 on Resource-Constrained Embedded Systems

  • George Tasopoulos, Jinhui Li, Apostolos P. Fournaris, Raymond K. Zhao, Amin Sakzad, Ron Steinfeld

  • ISPEC 2022

• Efficient Verifiable Partially-Decryptable Commitments from Lattices and Applications

  • Muhammed F. Esgin, Ron Steinfeld, Raymond K. Zhao

  • PKC 2022

  • Source Code

• MatRiCT+: More Efficient Post-Quantum Private Blockchain Payments

  • Muhammed F. Esgin, Ron Steinfeld, Raymond K. Zhao

  • S&P 2022

  • Source Code

• Implementation of Post-Quantum Algorithms for Bouncy Castle Library

  • Contributors of the Bouncy Castle

• Efficient Implementation Techniques for Lattice-based Cryptosystems

  • My PhD Thesis at Monash University

  • Supervised by Associate Professor Ron Steinfeld and Dr Amin Sakzad

  • Certified on Feburary 2022

2020

• COSAC: COmpact and Scalable Arbitrary-Centered Discrete Gaussian Sampling over Integers

  • Raymond K. Zhao, Ron Steinfeld, Amin Sakzad

  • PQCrypto 2020

  • Source Code

• FACCT: FAst, Compact, and Constant-Time Discrete Gaussian Sampler over Integers

  • Raymond K. Zhao, Ron Steinfeld, Amin Sakzad

  • IEEE Transactions on Computers

  • Source Code

2019

• MatRiCT: Efficient, Scalable and Post-Quantum Blockchain Confidential Transactions Protocol

  • Muhammed F. Esgin, Raymond K. Zhao, Ron Steinfeld, Joseph K. Liu, Dongxi Liu

  • CCS 2019

• Practical MP-LWE-based encryption balancing security-risk versus efficiency

  • Ron Steinfeld, Amin Sakzad, Raymond K. Zhao

  • Designs, Codes and Cryptography

  • Source Code

2017

• Titanium: Post-Quantum Public-key Encryption and KEM Algorithms

  • Ron Steinfeld, Amin Sakzad, Raymond K. Zhao

  • Submitted to the NIST Post-Quantum Cryptography

  • Submission Package

  • Source Code