Research Interest

My research interests focus on public-key cryptography with provable security.

In particular, I am interested in the design of cryptographic schemes

• immune to new types of attacks, including key-dependent message attack (KDM), related-key attack (RKA), key-leakage attack (KLA) and selective-opening attack (SOA);
• enjoying a tight security reduction to computational assumptions;
• based on the intractability of factoring-based (DCR), pairing-based (DDH, DLIN) or lattice (LWE, LPN) problems.

Experience

Tenure-track associate professor, Shanghai Jiao Tong University, China, Jan 2024 - Present

Tenure-track assistant professor, Shanghai Jiao Tong University, China, Jul 2020 - Dec 2023

Cyptographic algorithm engineer, Ant Group, China, Dec 2018 - Jun 2020

Postdoctoral researcher, Karlsruhe Institute of Technology, Germany, Oct 2017 - Sep 2018

• Host: Prof. Dennis Hofheinz

Education

PH.D. in Computer Science, Shanghai Jiao Tong University, China, Sep 2012 - Sep 2017

• Advisor: Prof. Shengli Liu
• PH.D. dissertation: Public-Key Encryption: KDM Security and RKA Security [pdf, in Chinese]

B.S. in Mathematics & in Physics (Zhiyuan Honors Class), Shanghai Jiao Tong University, China, Sep 2008 - Jun 2012

• Thesis Supervisor: Prof. Shengli Liu

Teaching

• NIS7019: Cryptographic Algorithms (Graduate, Spring 2021, Spring 2022, Spring 2023, Spring 2024)

• NIS4333: Modern Cryptography (Undergraduate, Spring 2023, Spring 2024)

• MATH6010: Graph and Networks (Graduate, Autumn 2021)

• CS1501: Thinking and Methodology in Programming (C++) (Undergraduate, Autumn 2021)

Conference Papers

• Anamorphic Authenticated Key Exchange: Double Key Distribution under Surveillance [eprint]
  Weihao Wang, Shuai Han, and Shengli Liu
  ASIACRYPT 2024

• Efficient Asymmetric PAKE Compiler from KEM and AE [eprint]
  You Lyu, Shengli Liu, and Shuai Han
  ASIACRYPT 2024

• Reusable Fuzzy Extractor from Isogeny
  Yu Zhou, Shengli Liu, and Shuai Han
  ProvSec 2024

• Universal Composable Password Authenticated Key Exchange for the Post-Quantum World [eprint]
  You Lyu, Shengli Liu, and Shuai Han
  EUROCRYPT 2024

• More Efficient Public-Key Cryptography with Leakage and Tamper Resilience [eprint]
  Shuai Han, Shengli Liu, and Dawu Gu
  PKC 2024

• Multi-Hop Fine-Grained Proxy Re-Encryption [eprint]
  Yunxiao Zhou, Shengli Liu, and Shuai Han
  PKC 2024

• Fine-Grained Proxy Re-Encryption: Definitions & Constructions from LWE [eprint]
  Yunxiao Zhou, Shengli Liu, Shuai Han, and Haibin Zhang
  ASIACRYPT 2023

• Almost Tight Multi-User Security under Adaptive Corruptions from LWE in the Standard Model [eprint]
  Shuai Han, Shengli Liu, Zhedong Wang, and Dawu Gu
  CRYPTO 2023

• Almost Tight Multi-User Security under Adaptive Corruptions & Leakages in the Standard Model [eprint]
  Shuai Han, Shengli Liu, and Dawu Gu
  EUROCRYPT 2023

• Fine-grained Verifier NIZK and Its Applications
  Xiangyu Liu, Shengli Liu, Shuai Han, and Dawu Gu
  PKC 2023

• EKE Meets Tight Security in the Universally Composable Framework [eprint]
  Xiangyu Liu, Shengli Liu, Shuai Han, and Dawu Gu
  PKC 2023

• Privacy-Preserving Authenticated Key Exchange in the Standard Model [eprint]
  You Lyu, Shengli Liu, Shuai Han, and Dawu Gu
  ASIACRYPT 2022

• Anonymous Public Key Encryption under Corruptions [eprint]
  Zhengan Huang, Junzuo Lai, Shuai Han, Lin Lyu, and Jian Weng
  ASIACRYPT 2022

• Fuzzy Authenticated Key Exchange with Tight Security
  Mingming Jiang, Shengli Liu, Shuai Han, and Dawu Gu
  ESORICS 2022

• Key Encapsulation Mechanism with Tight Enhanced Security in the Multi-User Setting: Impossibility Result and Optimal Tightness [eprint]
  Shuai Han, Shengli Liu, and Dawu Gu
  ASIACRYPT 2021

• Optimized Paillier’s Cryptosystem with Fast Encryption and Decryption
  Huanyu Ma, Shuai Han, and Hao Lei
  ACSAC 2021

• Authenticated Key Exchange and Signatures with Tight Security in the Standard Model [eprint]
  Shuai Han, Tibor Jager, Eike Kiltz, Shengli Liu, Jiaxin Pan, Doreen Riepel, and Sven Schäge
  CRYPTO 2021

• Authentication System Based on Fuzzy Extractors
  Mingming Jiang, Shengli Liu, Shuai Han, and Dawu Gu
  WASA 2021

• Tight Leakage-Resilient CCA-Security from Quasi-Adaptive Hash Proof System [eprint]
  Shuai Han, Shengli Liu, Lin Lyu, and Dawu Gu
  CRYPTO 2019

• Strong Leakage and Tamper-Resilient Public Key Encryption from Refined Hash Proof Systems
  Shi-Feng Sun, Dawu Gu, Man Ho Au, Shuai Han, Yu Yu, and Joseph Liu
  ACNS 2019

• Tightly SIM-SO-CCA Secure Public Key Encryption from Standard Assumptions [eprint]
  Lin Lyu, Shengli Liu, Shuai Han, and Dawu Gu
  PKC 2018

• KDM-Secure Public-Key Encryption from Constant-Noise LPN [eprint]
  Shuai Han, and Shengli Liu
  ACISP 2017

• Efficient KDM-CCA Secure Public-Key Encryption for Polynomial Functions [eprint]
  Shuai Han, Shengli Liu, and Lin Lyu
  ASIACRYPT 2016

• How to Make the Cramer-Shoup Cryptosystem Secure Against Linear Related-Key Attacks
  Baodong Qin, Shuai Han, Yu Chen, Shengli Liu, and Zhuo Wei
  INSCRYPT 2016

• Homomorphic Linear Authentication Schemes from epsilon-Authentication Codes
  Shuai Han, Shengli Liu, Fangguo Zhang, and Kefei Chen
  ASIACCS 2016

• An Efficient Key-Versatile KDM-Secure Storage Scheme
  Chenglong Ying, Shengli Liu, and Shuai Han
  CSEA 2015

• Proofs of Retrievability Based on MRD Codes [eprint]
  Shuai Han, Shengli Liu, Kefei Chen, and Dawu Gu
  ISPEC 2014

Journal Papers

• Functional Commitments for Arbitrary Circuits of Bounded Sizes
  Jinrui Sha, Shengli Liu, and Shuai Han
  Designs, Codes and Cryptography (2024)

• Robustly Reusable Fuzzy Extractor from Isogeny
  Yu Zhou, Shengli Liu, and Shuai Han
  Theoretical Computer Science (2024)

• Biometric-Based Two-Factor Authentication Scheme under Database Leakage
  Mingming Jiang, Shengli Liu, Shuai Han, and Dawu Gu
  Theoretical Computer Science (2024)

• Leakage-Resilient CCA-Secure Inner-Product Functional Encryption [paper, in Chinese]
  Shuai Han, Shengli Liu, and Dawu Gu
  Journal of Cryptologic Research (2023)

• Simulatable Verifiable Random Function from the LWE Assumption
  Yiming Li, Shengli Liu, Shuai Han, Dawu Gu, and Jian Weng
  Theoretical Computer Science (2023)

• Generic Construction of 1-out-of-n Oblivious Signatures
  Yu Zhou, Shengli Liu, and Shuai Han
  IEICE Transactions on Information and Systems (2022)

• Tightly CCA-secure Inner Product Functional Encryption Scheme
  Xiangyu Liu, Shengli Liu, Shuai Han, and Dawu Gu
  Theoretical Computer Science (2022)

• Pseudorandom Functions in NC Class from the Standard LWE Assumption
  Yiming Li, Shengli Liu, Shuai Han, and Dawu Gu
  Designs, Codes and Cryptography (2021)

• Multilinear Maps from Obfuscation
  Martin R. Albrecht, Pooya Farshim, Shuai Han, Dennis Hofheinz, Enrique Larraia, and Kenneth G. Paterson
  Journal of Cryptology (2020)

• New Insights on Linear Cryptanalysis
  Zhiqiang Liu, Shuai Han, Qingju Wang, Wei Li, Ya Liu, and Dawu Gu
  Science China Information Sciences (2020)

• QANIZK for Adversary-Dependent Languages and Their Applications
  Shuai Han, Shengli Liu, and Lin Lyu
  Theoretical Computer Science (2019)

• Proofs of Retrievability from Linearly Homomorphic Structure-Preserving Signatures
  Xiao Zhang, Shengli Liu, and Shuai Han
  International Journal of Information and Computer Security (2019)

• Tightly Secure Encryption Schemes against Related-Key Attacks
  Shuai Han, Shengli Liu, Lin Lyu, and Dawu Gu
  The Computer Journal (2018)

• Computational Robust Fuzzy Extractor
  Yunhua Wen, Shengli Liu, Ziyuan Hu, and Shuai Han
  The Computer Journal (2018)

• Reusable Fuzzy Extractor from the Decisional Diffie-Hellman Assumption
  Yunhua Wen, Shengli Liu, and Shuai Han
  Designs, Codes and Cryptography (2018)

• Super-Strong RKA Secure MAC, PKE and SE from Tag-based Hash Proof System [eprint]
  Shuai Han, Shengli Liu, and Lin Lyu
  Designs, Codes and Cryptography (2018)

• Tightly CCA-Secure Identity-Based Encryption with Ciphertext Pseudorandomness
  Shuai Han, Shengli Liu, Baodong Qing, and Dawu Gu
  Designs, Codes and Cryptography (2018)

• Public-Key Encryption with Tight Simulation-Based Selective-Opening Security
  Lin Lyu, Shengli Liu, and Shuai Han
  The Computer Journal (2018)

• Efficient KDM-CCA Secure Public-Key Encryption via Auxiliary-Input Authenticated Encryption
  Shuai Han, Shengli Liu, and Lin Lyu
  Security and Communication Networks (2017)

• Public Key Cryptosystems Secure Against Memory Leakage Attacks
  Shi-Feng Sun, Shuai Han, Dawu Gu, and Shengli Liu
  IET Information Security (2016)

• Improved Bounds on Negativity of Superpositions
  Zhihao Ma, Zhihua Chen, Shuai Han, Shaoming Fei, and Simone Severini
  Quantum Information and Computation (2012)

Academic Service

I have served as program committee member and external reviewer for several cryptography conferences and journals.

• Program committee member:
  Inscrypt 2021, APKC 2022, 2023, 2024, AsiaJCIS 2022, SocialSec 2022, ACNS 2025, PKC 2025.

• Conference external reviewer:
  CRYPTO, EUROCRYPT, ASIACRYPT, PKC, TCC, ACISP, ICISC, ISPEC, Pairing, ProvSec.

• Journal external reviewer:
  IEEE Transactions on Information Forensics and Security, Designs, Codes and Cryptography, Security and Communication Networks, Frontiers of Computer Science, IEEE Wireless Communications Magazine, Theoretical Computer Science.

Last updated: Oct 2024