Projects per year
Personal profile
Personal profile
Dr. Han Xia received his Ph.D. from Institute of Information Engineering, Chinese Academy of Sciences (IIE, CAS) and School of Cyber Security, University of Chinese Academy of Sciences (UCAS). His research interests lie in cryptography, with a particular focus on fully homomorphic encryption (FHE). He works in both the theoretical foundations and practical implementations of FHE, as well as its applications in privacy-preserving computation.
Research interests
Public Key Cryptography; Lattice-Based Cryptography; Fully Homomorphic Encryption; Privacy-Preserving Computation
Teaching
MTH122 Abstract Algebra AY2025-26 S2
MTH007 Linear Algebra AY2025-26 S1
Education/Academic qualification
PhD, Theory and Applications of Fully Homomorphic Encryption in Polynomial Modulus, CAS - Institute of Information Engineering
1 Sept 2019 → 29 Jun 2025
Award Date: 29 Jun 2025
Research areas
- Post-Quantum Cryptography
- Fully Homomorphic Encryption
Person Types
- Staff
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Collaborations and top research areas from the last five years
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Projects
- 2 Active
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Post-Quantum Cryptographic Techniques for Privacy-Preserving Computation
Xia, H. (PI)
1/07/26 → 30/06/29
Project: Internal Research Project
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Technical Verification and Pilot Application of Post-Quantum Cryptography Migration for Typical Transaction Services in International Finance and Banking
Ding, J. (PI), Zhang, W. (Team member), Gyawali, M. (Team member), Zeng, N. (Team member), Xia, H. (Team member) & 刘锐 (Team member)
1/01/26 → 31/12/28
Project: Governmental Research Project
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Efficient Privacy-Preserving Facial Verification via Fully Homomorphic Encryption and Preprocessing
Zeng, P., Xia, H., Lai, Q. & Wang, M., 3 Apr 2026, Algorithms and Architectures for Parallel Processing - 25th International Conference, ICA3PP 2025, Proceedings. Liu, H., Ibrahim, S. & Rauber, T. (eds.). Springer Science and Business Media Deutschland GmbH, p. 28-43 16 p. (Lecture Notes in Computer Science; vol. 16387 LNCS).Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review
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BioVite: Efficient and Compact Privacy-Preserving Biometric Verification via Fully Homomorphic Encryption
Zeng, P., Xia, H. & Wang, M., 23 Oct 2025, Information and Communications Security - 27th International Conference, ICICS 2025, Proceedings. Han, J., Xiang, Y., Cheng, G., Susilo, W. & Chen, L. (eds.). Springer Science and Business Media Deutschland GmbH, p. 503-521 19 p. (Lecture Notes in Computer Science; vol. 16217 LNCS).Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review
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Efficient and Compact Full-Domain Functional Bootstrapping via Subring Folding
Xia, H. & Wang, M., 5 Sept 2025, In: IACR Transactions on Cryptographic Hardware and Embedded Systems. 2025, 4, p. 737-762 26 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (Scopus) -
LightPIR: Single-Server PIR via FHE without Gaussian Noise
Xia, H. & Wang, M., 1 Jul 2024, ACM AsiaCCS 2024 - Proceedings of the 19th ACM Asia Conference on Computer and Communications Security. Association for Computing Machinery, Inc, p. 1059-1075 17 p. (ACM AsiaCCS 2024 - Proceedings of the 19th ACM Asia Conference on Computer and Communications Security).Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review
Open Access2 Citations (Scopus) -
More Efficient Functional Bootstrapping for General Functions in Polynomial Modulus
Xia, H., Liu, F. H. & Wang, H., 3 Dec 2024, Theory of Cryptography - 22nd International Conference, TCC 2024, Proceedings. Boyle, E., Boyle, E. & Mahmoody, M. (eds.). Springer Science and Business Media Deutschland GmbH, p. 130-163 34 p. (Lecture Notes in Computer Science; vol. 15367 LNCS).Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review
3 Citations (Scopus)
Activities
- 6 Presentation at conference/workshop/seminar
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Fully Homomorphic Encryption: A Technical Overview
Xia, H. (Speaker)
4 Mar 2026Activity: Talk or presentation › Presentation at conference/workshop/seminar
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A Brief Introduction to Lattice-Based Cryptography
Xia, H. (Speaker)
13 Nov 2025Activity: Talk or presentation › Presentation at conference/workshop/seminar
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Efficient and Compact Full-Domain Functional Bootstrapping via Subring Folding
Xia, H. (Speaker)
17 Sept 2025Activity: Talk or presentation › Presentation at conference/workshop/seminar
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More efficient functional bootstrapping for general functions in polynomial modulus
Xia, H. (Speaker)
6 Dec 2024Activity: Talk or presentation › Presentation at conference/workshop/seminar
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Single-server PIR via NTRU-based FHE: Simpler, smaller, and faster
Xia, H. (Speaker)
9 Jul 2024Activity: Talk or presentation › Presentation at conference/workshop/seminar