Feng-Hao Liu
I am an associate professor at the School of EECS, Washington State University (WSU). My main research areas is cryptography, with focuses on the following specific topics:
- Lattice-based Cryptography
- Fully Homomorphic Encryption (FHE), theory and applications to private ML and data analytics
- Post-quantum cryptography for advanced crypto designs, including functional encryption, attribute-based encryption, advanced signatures, efficient ZK proofs
- Multiparty computation
- Leakage and tamper resilient cryptography
My research has been supported by an NSF CRII award, an NSF Career award, and a CARE fund. For more information, please see my CV and publications below.
Currently, our group is not recruiting RAs. We will update the page when there is an open position. If you have other fellowship and are looking for graduate study focusing on cryptography (either theory and practice) at WSU, you are welcome to talk to me.
Contact Information
Email: feng-hao.liu@wsu.edu
Education
- PH.D. in Computer Science, Brown University, Providence, RI. May 2013. Advisor: Professor Anna Lysyanskaya
- Master of Science in Computer Science, Brown University, Providence, RI. May 2009.
- Bachelor of Science in Electrical Engineering, National Taiwan University, Taipei, Taiwan. June 2005.
Academic Positions
- Associate Professor, Washington State University, Pullman, WA.Aug 2023 - now.
- Affliated Associate Professor, Florida Atlantic University, Boca Raton, FL. Aug 2023 - now.
- Associate Professor, Florida Atlantic University, Boca Raton, FL. Aug 2021 - Aug 2023.
- Assistant Professor, Florida Atlantic University, Boca Raton, FL. May 2015 - July 2021.
- Postdoc Researcher, Maryland Cybersecurity Center at University of Maryland, College Park, MD. July 2013 - May 2015. Advisors: Professors Jonathan Katz, Elaine Shi, and Dana Dachman-Soled.
Publications
Generally, I post my papers on Crypto eprint. Also, a list of my publications can be found at DBLP.
-
Shorter ZK-SNARKs from square span programs over ideal lattices
with Xi Lin, Heyang Cao, Zhedong Wang, and Mingsheng Wang
(Journal) Cybersecurity 2024 - Leakage-resilient sf IBE/sf ABE with optimal leakage rates from lattices
with Qiqi Lai and Zhedong Wang
(Journal) Designs, Codes and Cryptography 2024 -
(Continuous) Non-malleable Codes for Partial Functions with Manipulation Detection and Light Updates
with Aggelos Kiayias and Yiannis Tselekounis
Jornal of Cryptology 2024 -
Ring/Module Learning with Errors Under Linear Leakage - Hardness and Applications
with Zhedong Wang and Qiqi Lai
PKC 2024 - Efficient Multiparty Probabilistic Threshold Private Set
Intersection
with En Zhang and Leiyong Qin
CCS 2023 - An Efficient CKKS-FHEW/TFHE Hybrid Encrypted Inference Framework
with Tzu-Li Liu, Yu-Te Ku, Ming-Chien Ho, Ming-Ching Chang, Chih-Fan Hsu, Wei-Chao Chen and Shih-Hao Hung
PriST-AI 2023, a workshop of ESORICS 2023 - Region-aware Photo Assurance System for Image Authentication
with Ke-Han Li, Chih-Fan Hsu, Ming-Ching Chang, Shao-Yi Chien and Wei-Chao Chen
MIPR 2023 - Batch Bootstrapping I: A New Framework for SIMD Bootstrapping in Polynomial Modulus
with Han Wang
Eurocrypt 2023 - Batch Bootstrapping II: Bootstrapping in Polynomial Modulus Only Requires $\tilde O(1)$ FHE Multiplications in Amortization
with Han Wang
Eurocrypt 2023 - Nonmalleable Digital Lockers and Robust Fuzzy Extractors in the Plain Model
with Daniel Apon, Chloé Cachet, Benjamin Fuller, and Peter Hall
Asiacrypt 2022 - FedTrust: Towards Building Secure Robust and Trustworthy Moderators for Federated Learning
with Chih-Fan Hsu, Jing-Lun Huang, Ming-Ching Chang, and Wei-Chao Chen
MIPR 2022 - Leakage-Resilient IBE/ ABE with Optimal Leakage Rates from Lattices
with Qiqi Lai, Feng-Hao Liu, and Zhedong Wang
PKC 2022 - Ring-based identity based encryption – asymptotically shorter MPK and tighter security
with Parhat Abla, Han Wang, and Zhedong Wang
TCC 2021 - New Lattice Two-stage Sampling Technique and its Applications to Functional Encryption – Stronger Security and Smaller Ciphertexts
with Qiqi Lai and Zhedong Wang
Eurocrypt 2021 - New Lattice Rate-1 Key-Dependent Message Security via Reusable Homomorphic Extractor against Correlated-Source Attacks
with Qiqi Lai and Zhedong Wang
PKC 2021 - Rounding in the rings
with Zhedong Wang
Crypto 2020 - Almost Tight Security in Lattices with Polynomial Moduli – PRF, IBE, All-but-many LTF, and More
with Qiqi Lai and Zhedong Wang
PKC 2020 - Efficient Multi-Party Private Set Intersection Against Malicious Adversaries
with En Zhang, Qiqi Lai, Ganggang Jin, and Yu Li
CCSW 2019 - CCA Proxy Re-encryption and Signatures from Lattices
with Xiong Fan
ACNS 2019 - Decentralized ABE and FE for Inner Products, Revisited
with Xiong Fan and Zhedong Wang
PKC 2019 - Parameter-Hiding Order Revealing Encryption
with David Cash, Adam O’Neill, Mark Zhandry, and Cong Zhang
Asiacrypt 2018 - Non-Malleable Codes for Partial Functions with Manipulation Detection \
with Aggelos Kiayias and Yiannis Tselekounis
Crypto 2018 - Practical Non-Malleable Codes from l-more Extractable Hash Function \
with Aggelos Kiayias and Yiannis Tselekounis
CCS 2016 - Deniable Attribute Based Encryption for Branching Programs from LWE
with Daniel Apon and Xiong Fan
TCC 2016 - Leakage-Resilient Public-Key Encryption from Obfuscation
with Dana Dachman-Soled, S. Dov Gordon, Adam O’Neill, and Hong-Sheng Zhou
PKC 2016, Journal of Cryptology 2019 - Constant-Round MPC with Fairness and Guarantee of Output Delivery
with S. Dov Gordon, and Elaine Shi
Crypto 2015 - Leakage-Resilient Circuits Revisited – Optimal Number of Computing Components without Leak-free Hardware
with Dana Dachman-Soled, and Hong-Sheng Zhou
Eurocrypt 2015 - Locally Decodable and Updatable Non-Malleable Codes and Their Applications
with Dana Dachman-Soled, Elaine Shi, and Hong-Sheng Zhou
TCC 2015, Journal of Cryptology 2020 - Multi- client Verifiable Computation with Stronger Security Guarantees
with S. Dov Gordon, Jonathan Katz, Elaine Shi, and Hong-Sheng Zhou
TCC 2015 - Multi-input Functional Encryption
with Shafi Goldwasser, S.Dov Gordon, Vipul Goyal, Abishek Jain, Jonathan Katz, Amit Sahai, Elaine Shi, and Hong-Sheng Zhou
Eurocrypt 2014
Merge of [GKLSZ] and [GGJS] - Re-encryption, functional re-encryption, and multi-hop re-encryption: A framework for achieving obfuscation-based security and instantiations from Lattices
with Nishanth Chandran, Melissa Chase, Ryo Nishimaki and Keita Xagawa
PKC 2014 - Leakage Resilient Fully Homomorphic Encryption
with Alexandra Berkoff
TCC 2014 - On the Lattice Smoothing Parameter Problem
with Kai-Min Chung, Daniel Dadush, and Chris Peikert
CCC 2013 - Tamper and Leakage Resilience in the Split-State Model
with Anna Lysyanskaya
Crypto 2012 - Public-Key Cryptography from New Multivariate Quadratic Assumptions
with Yun-Ju Huang and Bo-Yin Yang
PKC 2012 - Memory Delegation
with Kai-Min Chung, Yael Tauman Kalai, and Ran Raz
Crypto 2011 - Efficient Secure Two-Party Exponentiation
with Ching-Hua Yu, Sherman S. M. Chow, and Kai-Min Chung
CT-RSA 2011 - Efficient String-Commitment from Weak Bit-Commitment
with Kai-Min Chung, Chi-Jen Lu, and Bo-Yin Yang
Asiacrypt 2010 - Algorithmic Tamper-Proof Security under Probing Attacks
with Anna Lysyanskaya
SCN 2010 - Parallel Repetition Theorems for Interactive Arguments
with Kai-Min Chung
TCC 2010
(Best Student Paper Award) - Secure PRNGs from Specialized Polynomial Maps over Any $F_q$
with Chi-Jen Lu and Bo-Yin Yang
PQCrypto 2008
Advising (Students, Postdoc, Visiting Scholars)
I have been very fortunate to work with a lot of wonderful collaborators.
Current Students
- Tianyu Zhao, Ph.D. student at WSU
- Minzhang Li, Ph.D. student at WSU
- Guangbei Yi, Ph.D. student (starting spring 2025) at WSU
Previous Students and Postdocs
- Zhedong Wang, postdoc at FAU, 2019 - 2021. Currently an assistant professor at Shanghai Jiao Tong University
- Mohammad G. Raeini, Ph.D. completed in Aug 2022 at FAU. Currently in Cornami, Inc.
Visiting Scholars
- Yun Song (Asoociate Prof. at Shaanxi Normal University, China), 2018 - 2019
- En Zhang (Prof. at Henan Normal University, China), 2018 - 2019
- Qiqi Lai (Assoc Prof. Shaanxi Normal University, China), 2018 - 2019
- Chengbo Xu (Assoc Prof. Jinan University, China), 2016 - 2017
Teaching
At Washington State University (WSU)
I plan to teach a graduate level course related to “Computation on Encrypted Data”. Since 2023, I have taught the following courses at WSU.
- CPTS 327 Fundamentals of Cyber Security and Cryptography
- CPTS 428/528 Software Security and Reverse Engineering
- CPTS 580 Randomized Alogrithms
At Florida Atlantic University (FAU)
I have taught the following courses at FAU (2015 - 2023).
- COT 2000 Foundations of Computing
- COP 2220 Introduction to C
- COP 3530 Data Structures and Algorithm Analysis
- COT 4420 Formal Languages and Automata
- STA 4821 Stochastic Models in Computer Science
- COT 4930 Competitive Programming
- EGN 4950C Engineering Design I
- EGN 4952C Engineering Design II
- COT 6200 Theory and Philosophy of Computation
- COT 6446 Randomized Algorithms (and Secure Designs)
- COT 6930 Cryptography under Physical Attacks
- COT 6930 Computation Algorithms on Encrypted Data
Services
I have served on program committee for various conferences, and reviewed journal/conference submissions at other venus.
Program Committee and Professional Reviews
- Conferences: Eurocrypt 2025 (Area Chair), CT-RSA 2025, Asiacrypt 2024, Asiacrypt 2023, Crypto 2023, CT-RSA 2023, Crypto 2022, ITC 2022, PKC 2022, PKC 2021, Asiacrypt 2020, Asiacrypt 2019, PKC 2019, Asiacrypt 2017, Asiacrypt 2016, AsiaPKC 2016, PKC 2016, Inter- national Workshop on Security in Cloud Computing (Asiaccs-SCC 2014), Information Security Conference (ISC 2014)
- Journal Editor: IET Information Security (2021 - 2023)
- Panelist: National Science Foundation (SaTC)
Departmental Services
- Undergraduate Committee (WSU), Undergraduate Committee (FAU), Student Competitions Advising (FAU), Instructor Search Committee (FAU)