😊 About me

I am a PhD Candidate in Cyberspace Security at Hangzhou Dianzi University, advised by You Lin and Gengran Hu.

My research focuses on the Lattice-based Cryptography, Blockchain Technology, Zero-Knowledge Proof, and Privacy Protection.

If you are seeking any form of academic cooperation, please feel free to email me at longbohan@hdu.edu.cn.

🔥 News

• 2025.03:   A Novel Lattice-based Blockchain Infrastructure and its Application on Trusted Data Management, IEEE Transactions on Network Science and Engineering, ACCEPT.
• 2025.03:   A Conditional Privacy-Preserving Authentication with Threshold Auditability for VANETs, IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, under review.
• 2024.01:   An Enhanced Conditional Privacy-preserving Authentication for VANETs Based on Zero-Knowledge Proofs and Blockchain, IEEE Transactions on Dependable and Secure Computing, under review.

📝 Publications

• IEEE Internet of Things Journal “SurroFL: Sketch-Based Defense Against Poisoning in Privacy-Preserving Federated Learning.” , Yuyang Kuang, Weinan Liu, Longbo Han, et al.
• IEEE Transactions on Network Science and Engineering “A Novel Lattice-based Blockchain Infrastructure and its Application on Trusted Data Management.” , Han, Longbo, et al.
• IEEE ACCESS “Privacy protection of VANET based on traceable ring signature on ideal lattice.” , Han, Longbo, et al.
• P2P Netw. Appl. An efficient outsourcing attribute-based encryption scheme in 5G mobile network environments. , Zhang, Z., Cao, S., Yang, X. Han, L.

🎖 Honors and Awards

• 2023.10,  National Scholarship (Top 3%), 杭州电子科技大学博士研究生国家奖学金.
• 2023.10,  The First Prize Scholarship (Top 30%), 杭州电子科技大学学业一等奖学金.
• 2022.10,  The First Prize Scholarship (Top 30%), 杭州电子科技大学学业一等奖学金.
• 2020.10,  Excellent Student Cadre (Only one in a college), 西北师范大学优秀学生干部奖.
• 2019.10,  Prize for the practice vanguard (Only one in a college), 西北师范大学实践先锋奖.
• 2020.10,  The Second Prize Scholarship (Top 30%), 西北师范大学学业二等奖学金.
• 2019.10,  The Second Prize Scholarship (Top 30%), 西北师范大学学业二等奖学金.
• 2016.11,  Prize for the Enterprise Resource Planning Game(ERP), 全国大学生新道杯沙盘模拟运营大赛国赛三等奖.
• 2016.07,  Prize for the Enterprise Resource Planning Game(ERP) in Chongqing, 全国大学生新道杯沙盘模拟运营大赛重庆市一等奖.
• 2016.01,  Outstanding Student, 先进个人.
• 2015.07,  Prize for “Challenge Cup” National Science and Technology College of extra-curricular academic competition works in Chongqing, 重庆市挑战杯全国大学生课外学术科技作品竞赛一等奖.

🌏 Project (team member)

• National Natural Science Foundation of China under Grant 61772166,61662071,61562077,61662069.
• 国家自然科学基金（面上）： 61772166, 基于多模态生物特征与纠错码的新型密码算法; 61662071, 基于属性加密的数据访问控制方法研究; 61562077, 大数据环境下数据层隐私保护性多方密码算法研究; 61662069, 云计算环境下支持动态群组和隐私保护的大数据完整性验证机制研究; 61602143, 格上计算问题的算法与复杂性研究.
• The Key Program of the Natural Science Foundation of Zhejiang province of China under Grant LZ17F020002.
• 浙江省自然科学基金项目（重点）： LZ17F020002, 基于互联网与多模态生物特征识别技术的信息安全关键技术.
• The Open Research Fund of Key Laboratory of Cryptography of Zhejiang Province.
• 省重点实验室开放课题： ZCL21005, 区块链跨链上的扩容技术与应用.

📖 Others

• None.

💻 Internships

• 2020.10-2021.03, 甘肃安聚科技有限公司（GANSU ANJU TECHNOLOGY SECURITY CO.）, China.