Program Commitees

• S&P 2025, NDSS 2025- 24, Usenix Security 2021-24, EuroS&P 2024, CCS 23- 22, 14, RAID 2024- 23
• Eurocrypt 2026, Asiacrypt 2025- 23, 17, 12, PKC 2025, 15, CT-RSA 2020, Crypto 2019
• Web 2025- 21, 19, PETS 2026-25, 23-21, 18, (Quality/Top Senior PC in '23/'22)
• Infocom 2019- 15 (Distinguished TPC in 2018), ICDCS 23- 20, 16- 15
• AAAI 2026, IJCAI 2025- 22 (Distinguished PC Member in '22), Financial Crypt. 2013-15

People

• Andes Y. L. Kei, BEng(CUHK), HK PhD Fellowship (HKPFS) Awardee
  (working on AI and Blockchain)
• Ying-yu Pan, MSc, BEng(BUPT)
  (working on cryptography)
• Huangting Wu (now Alibaba Cloud)
• Jack P. K. Ma (now lecturer, CUHK)
• Harry W. H. Wong (now postdoc, CUHK)
• Minxin Du (now RAP, PolyU)
• Jiafan Wang (now postdoc, CSIRO)
• Lucien K. L. Ng (now PhD student, Gatech)
• Xiuhua Wang (now asso. prof., HUST)
• Raymond K. H. Tai
• Russell W. F. Lai (now asst. prof., Aalto)
• Yongjun Zhao (now research scientist, TikTok)
• Tao Zhang (now Tencent)

Funded Projects

• Decentralizing Cryptosystems, HKD 838K
• Deep Learning with Privacy, HKD 731K
• Password-Hardening Services, HKD 875K
• Sublinear Multi-Writer Searchable Encryption, HKD 700K
• Searchable Encryption: General Framework and Practical Constructions, HKD 693K
• Accountable Privacy in Online Communications, HKD 916K

Teaching

• IERG 4150 - Introduction to Cryptography
• IERG 5710B - Cryptography, Info. Security and Privacy
• IERG 5590 / IEMS 5709 - Advanced Topics in Blockchain
• ENGG 5383 / IERG 5240 - Applied Cryptography
• IEMS 5725 - Blockchain and Applications
• IERG 5310 - Security and Privacy in Cyber Systems
• DSME 6788 - Cyber Security
• IERG 4220 - Secure Software Engineering
• IERG 4130 / ESTR 4306 - Introduction to Cyber Security

Research (Selected)

Secure Access Control to Encrypted Data

• [NDSS 2024] Unus pro omnibus: Multi-Client Searchable Encryption via Access Control
• [ISIT 2023] Unconditionally Secure Access Control Encryption
• [ACNS 2023] Anonymous (Hierarchical) Identity-Based Encryption from Broader Assumptions
• [Usenix Security 2022] Omnes pro uno: Practical Multi-Writer Encrypted Database
• [DBSec 2021] Simple Storage-Saving Structure for Volume-Hiding Encrypted Multi-Maps (Best Student Paper Award)

Secure Signatures and Credentials

• [PQCrypto 2025] Batch Anonymous MAC Tokens from Lattices
• [NDSS 2024] Secure Multiparty Computation of Threshold Signatures Made More Efficient
• [NDSS 2023] Real Threshold ECDSA
• [RAID 2023] How (Not) to Build Threshold EdDSA
• [EuroS&P 2023] SMART Credentials in the Multi-queue of Slackness

Machine Learning

• [NDSS 2025] SHAFT: Secure, Handy, Accurate and Fast Transformer Inference (Distinguished Artifact Award)
• [S&P 2023] SoK: Cryptographic Neural-Network Computation
• [CCS 2023] DP-Forward: Fine-tuning and Inference on Language Models with Differential Privacy in Forward Pass
• [TheWeb 2023] Sanitizing Sentence Embeddings (and Labels) for Local Differential Privacy
• [AsiaCCS 2022] Secure-Computation-Friendly Private Set Intersection from Oblivious Compact Graph Evaluation

Cryptocurrency

• [CSF 2023] On Sustainable Ring-Based Anonymous Systems
• [ICDCS 2023] Towards Decentralized Adaptive Control of Cryptocurrency Liquidity via Auction
• [ICDCS 2021] LDSP: Shopping with Cryptocurrency Privately and Quickly under Leadership
• [ACSAC 2021] Sipster: Settling IOU Privately and Quickly with Smart Meters