Shangqi Lai

Research Scientist at CSIRO's Data61

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CSIRO Clayton

Research Way

Clayton, VIC, 3168, Australia

I am a Research Scientist at the Distributed Systems Security Group of CSIRO's Data61, Australia. Before joining CSIRO, I was a Research Fellow at Monash University. I obtained my PhD degree from Monash University in 2020. Before that, I earned my M.Sc. (Computer Science) degree from The University of Hong Kong and B.E. degree (Information Security) from Nanjing University of Aeronautics and Astronautics.

I have broad interests in data security and privacy of cloud-based applications (e.g., encrypted database, virtualised network function, machine learning, etc.). My research mainly focuses on designing practical systems to address the security and privacy issues in the above applications.

Selected Publications

  1. IEEE TDSC
    Practical Encrypted Network Traffic Pattern Matching for Secure Middleboxes
    Shangqi Lai, Xingliang Yuan, Shi-Feng Sun, and 4 more authors
    IEEE Transactions on Dependable and Secure Computing (TDSC) 2022

    Short Abstract: Secure and efficient pattern matching protocol that saves 94% communication cost in encrypted pattern matching applications

  2. NDSS
    OblivSketch: Oblivious Network Measurement as a Cloud Service
    Shangqi Lai, Xingliang Yuan, Joseph K Liu, and 4 more authors
    In The 2021 Network and Distributed System Security Symposium (NDSS) 2021

    Short Abstract: Enabling highly secure network measurements over backbone-scale networks with probabilistic data structures and trusted hardware

  3. NDSS
    Practical Non-Interactive Searchable Encryption with Forward and Backward Privacy
    Shi-Feng Sun, Ron Steinfeld, Shangqi Lai, and 5 more authors
    In The 2021 Network and Distributed System Security Symposium (NDSS) 2021

    Short Abstract: Efficient searchable encryption protocol with the minimum communication round and the highest security level among the existing works

  4. ACM ASIACCS
    GraphSE2: An Encrypted Graph Database for Privacy-Preserving Social Search
    Shangqi Lai, Xingliang Yuan, Shi-Feng Sun, and 3 more authors
    In The 14th ACM ASIA Conference on Computer and Communications Security (ASIACCS) 2019

    Short Abstract: A graph database system that supports versatile privacy-preserving social network services upon encrypted social networks

  5. ACM CCS
    Result Pattern Hiding Searchable Encryption for Conjunctive Queries
    Shangqi Lai, Sikhar Patranabis, Amin Sakzad, and 6 more authors
    In The 25th ACM Conference on Computer and Communications Security (CCS) 2018

    Short Abstract: Low-cost enhancement on the security level of conjunctive queries in searchable encryption via a new cryptographic primitive that is 30000x faster than prior works