Han Xia

Teacher / Researcher

About Me

I am an Assistant Professor in the Post-Quantum Cryptography Migration Interdisciplinary Lab (PQC-X) at Xi'an Jiaotong-Liverpool University (XJTLU).

I received my Ph.D. from the Institute of Information Engineering, Chinese Academy of Sciences (IIE, CAS) and the School of Cyber Security, University of Chinese Academy of Sciences (UCAS).

Research

My research focuses on cryptography, particularly fully homomorphic encryption (FHE), including its mathematical foundations, practical implementations, and applications.

Selected Publications (full list)

• Algebraic Analysis of Homomorphic Trace Evaluation and Its Applications
  Han Xia
  IACR CiC 2026 [Paper] [ePrint] [GitHub]
• Efficient and Compact Full-Domain Functional Bootstrapping via Subring Folding
  Han Xia and Mingsheng Wang
  IACR TCHES 2025 [Paper] [Slides]
• More Efficient Functional Bootstrapping for General Functions in Polynomial Modulus
  Han Xia, Feng-Hao Liu, and Han Wang
  TCC 2024 [Paper] [Slides]

Workshop Talks

• Fully Homomorphic Encryption: A Technical Overview
  International Workshop on Post-Quantum Cryptography Frontiers and Applications
  March 4, 2026 · XJTLU, Suzhou, China
• A Brief Introduction to Lattice-Based Cryptography
  Workshop on Quantum Algorithms and Post-Quantum Cryptography
  November 13, 2025 · XJTLU, Suzhou, China

Teaching

• MTH028 Linear Algebra I
  Fall 2026
• MTH122 Introduction to Abstract Algebra
  Spring 2026
• MTH007 Linear Algebra
  Fall 2025

Service

• External Reviewer
  PKC 2026

Contact

LSS 1016, South Tower, Life Sciences Building, North Campus
Xi'an Jiaotong-Liverpool University
No.39 Qingning Road, Suzhou Industrial Park
Suzhou, Jiangsu Province, China 215123

Email: hx (insert at symbol) xiahan.net