从事信息安全，数据隐私保护，密码学及其应用等领域的研究工作多年，参与2项国家自然科学基金项目；发表相关SCI/EI论文23篇，其中CCF-A类论文7篇；担任IEEE TDSC、IEEE ICC等国际高水平会议和期刊的审稿人。
发表论文：
[1] Guanxiong Ha, Chunfu Jia*, Xiaowei Ge, Yuchen Chen, Xuan Shan. Similarity-aware Defense Scheme for Online Brute-force Attacks in Encrypted Deduplication[J]. IEEE Transactions on Dependable and Secure Computing (IEEE TDSC), (Early Accessed), DOI: 10.1109/TDSC.2025.3609514. （CCF-A）
[2] Guanxiong Ha, Yuchen Chen, Chunfu JIA*, Keyan Chen, Rongxi Wang, Qiaowen Jia. Scalable Encrypted Deduplication Based on Location-hiding Secret Sharing of Data Keys[J]. IEEE Transactions on Computers (IEEE TC), 2025, 74(11): 3710-3721. （CCF-A）
[3] Guanxiong Ha, Yuchen Chen, Zhipeng Cai, Chunfu JIA*, Xuan Shan. Random Coding Responses for Resisting Side-channel Attacks in Client-side Deduplicated Cloud Storage[J]. IEEE Transactions on Services Computing (IEEE TSC), 2025, 18(3): 1697-1710. （CCF-A）
[4] Guanxiong Ha, Xiaowei Ge, Chunfu JIA*, Yuchen Chen, Zhen Su. Revisiting SGX-based Encrypted Deduplication via PoW-Before-Encryption and Eliminating Redundant Computations[J]. IEEE Transactions on Dependable and Secure Computing (IEEE TDSC), 2025, 22(3): 2037-2053. （CCF-A）
[5] Guanxiong Ha, Chunfu JIA*, Yixuan Huang, Hang Chen, Ruiqi Li, Qiaowen Jia. Scalable and popularity-based secure deduplication schemes with fully random tags[J]. IEEE Transactions on Dependable and Secure Computing (IEEE TDSC), 2023, 21(3): 1484-1500. （CCF-A）
[6] Xiaowei Ge, Guanxiong Ha, Chunfu JIA*, Longwei Yang, Qiaowen Jia. PopeDup: Popularity-Based Encrypted Deduplication with Privacy Learning Attacks Resistance and Protected Thresholds[J]. IEEE Transactions on Information Forensics & Security (IEEE TIFS), 2025, 20: 7695-7708. （CCF-A）
[7] Mingyue Li, Chunfu JIA*, Ruizhong Du, Guanxiong Ha. Efficient Conjunctive Geometric Range Query over Encrypted Spatial Data with Learned Index[J]. IEEE Transactions on Computers (IEEE TC), (Early Accessed), DOI: 10.1109/TC.2025.3604470. （CCF-A）
[8] Guanxiong Ha, Chunfu Jia*, Xiaowei Ge, Jiawei Yuan, Hang Chen, Mingyue Li. Efficient and Anonymous Password-Hardened Encryption Services[J]. Information Sciences, 2024, 653: 119771. （CCF-B）
[9] Guanxiong Ha, Chunfu Jia*, Yuchen Chen, Hang Chen, Mingyue Li. A secure client-side deduplication scheme based on updatable server-aided encryption[J]. IEEE Transactions on Cloud Computing (IEEE TCC), 2023, 11(4): 3672-3684. （SCI 1区）
[10] Yuchen Chen, Guanxiong Ha, Xuan Shan, Chunfu JIA*. Scalable Client-side Encrypted Deduplication beyond Secret Sharing of the Master Key[C]. //The 23rd IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom 2024). Sanya, China, 2024:453-460. （CCF-C）
[11] Caixia Ma, Chunfu JIA*, Ruizhong Du, Guanxiong Ha, Mingyue Li. Privacy-preserving Searchable Encryption Based on Anonymization and Differential privacy[C]. //2024 IEEE International Conference on Web Services (IEEE ICWS 2024). Shenzhen, China, 2024:371-382. （CCF-B）
[12] Rongxi Wang, Guanxiong Ha, Chunfu JIA*, Ruiqi Li, Zhen Su. Deduplication and approximate analytics for encrypted IoT data in fog-assisted cloud storage[C]. //International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP 2024). Macau , China, 2024: 78-97.
[13] Xiaowei Ge, Guanxiong Ha, Chunfu JIA*, Zhen Su. Privacy-Preserving Popularity-Based Deduplication against Malicious Behaviors of the Cloud[C]. //Proceedings of the 19th ACM Asia Conference on Computer and Communications Security (ASIA CCS '24). Singapore, Singapore, 2024: 245-256.
[14] Yuchen Chen, Chunfu JIA*, Guanxiong Ha, Xuan Shan, Hang Chen. A Secure and lightweight client-side deduplication approach for resisting side channel attacks[C]. //2024 IEEE International Conference on Communications (ICC 2024). Denver, CO, USA, 2024: 1400-1406.
[15] Guanxiong Ha, Hang Chen, Chunfu Jia*, Mingyue Li. Threat model and defense scheme for side-channel attacks in client-side deduplication[J]. Tsinghua Science and Technology, 2022, 28(1): 1-12. （SCI 2区）
[16] Guanxiong Ha, Hang Chen, Chunfu Jia*, Ruiqi Li, Qiaowen Jia. A secure deduplication scheme based on data popularity with fully random tags[C]. //2021 IEEE 20th International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom 2021). Shenyang, China, 2021: 207-214.
[17] Mingyue Li, Chunfu Jia*, Ruizhong Du, Wei Shao, Guanxiong Ha. Dse-rb: A privacy-preserving dynamic searchable encryption framework on redactable blockchain[J]. IEEE Transactions on Cloud Computing (IEEE TCC), 2022, 11(3): 2856-2872.
[18] Qiaowen Jia, Guanxiong Ha, Hanwei Wang, Haoyu Ma, Hang Chen. An enhanced MinHash encryption scheme for encrypted deduplication[C]. //2022 IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom 2022). Wuhan, China, 2022: 565-573.
[19] Hang Chen, Guanxiong Ha, Yuchen Chen, Haoyu Ma, Chunfu Jia*. Secure Deduplication Against Frequency Analysis Attacks[C]. //2022 18th International Conference on Mobility, Sensing and Networking (MSN 2022). Guangzhou, China, 2022: 339-346.
[20] 贾春福*, 哈冠雄, 李瑞琪. 密文去重系统中的数据访问控制策略[J]. 通信学报, 2020, 41(5): 72-83.
[21] 贾春福*, 哈冠雄, 武少强, 陈杭, 李瑞琪. 加密去重场景下基于 AONT 和 NTRU 的密钥更新方案[J]. 通信学报, 2021, 42(10): 67-80.
[22] 哈冠雄, 贾巧雯, 陈杭, 贾春福*. 无第三方服务器的基于数据流行度的加密去重方案[J]. 通信学报, 2022, 43(8): 17-29.
软件著作权：
[1] 计算机软件著作权登记：软件名称：相似度感知的加密去重系统V1.0，登记号：2022SR1559159，开发完成日期：2022-07-08；登记完成日期：2022-11-22。
[2] 计算机软件著作权登记：软件名称：无第三方服务器的基于数据流行度的加密去重系统V1.0，登记号：2022SR1559158，开发完成日期：2022-07-08；登记完成日期：2022-11-22。
[3] 计算机软件著作权登记：软件名称：基于授权去重和密钥更新的多群组用户云存储系统V1.0，登记号：2022SR1561698，开发完成日期：2022-07-08；登记完成日期：2022-11-23。
[4] 计算机软件著作权登记：软件名称：基于数据流行度的加密去重系统V1.0，登记号：2021SR1219360，开发完成日期：2021-06-25；登记完成日期：2021-08-17。