教师名录
邮箱：longyu@sjtu.edu.cn
所在研究所：信息安全与密码学研究所
个人简介
龙宇，女，1980年10月生。2008年2月在上海交大计算机系获计算机系统结构博士学位。同期受聘进入上海交通大学计算机系工作，2016年起任副教授、博导。2012年6月至2013年6月受邀访问巴黎高等师范学院（ENS）计算机系。长期从事公钥密码学、区块链、信息安全、可信计算及云计算安全等领域的研究，取得了较好的成绩。目前为止在国内外知名学术期刊及会议上发表文章70余篇，申请专利11项。近年来，其研究重点为及密码学及在区块链安全协议中应用。作为项目负责人或骨干成员主持和参与了一系列国家/省部级重点科研项目，代表性项目包括：
① 针对区块链相关的科研及应用方面：上海市科委项目《基于区块链技术的数据全生命周期完整性保护技术研究》项目（2019-2021）、教育部高等学校区块链创新行动计划《基于区块链的新型监管体系关键技术研究》（2020-2022）、中国工程院《中国区块链战略发展研究》（2021）、山东省重点研发计划《大规模分布式区块链安全协同技术》（2022-2024）、上海市科委项目《面向复杂开源联盟链间多层次跨链需求的安全隐私跨链技术研究》（2024-2025）等。
② 针对密码算法和协议的设计与证明：“新型功能加密体制中的关键问题研究”（国家自然科学基金，2016）、“网络环境下可证明安全分布式公钥加密体制的研究”（国家自然科学基金，2010）、“面向真实网络环境的分布式公钥加密体制的基础问题研究”（博士点基金，2010）、“云计算环境下数据安全基础问题研究”（国家自然科学基金重点项目、2012）、“密码算法基础理论研究”（国家“973”计划项目，2007-2011）等。
教育背景
Sep 2004 - Feb 2008, Doctor’s
Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Supervisors: Prof. Kefei Chen
Doctoral Dissertation: The Formal Study of Secure Threshold Cryptographic schemes
Sep 2002 - March 2005, Master’s
Department of Information Security Engineering , Shanghai Jiao Tong University, Shanghai, China
Supervisor: Prof. Zhenfu Cao
Master Thesis: Research of Threshold Key Escrow
Sep 1998-Jul 2002, B.S.
Department of Computer and Communication Engineering, SouthWest Jiao Tong University, Chengdu, China
工作履历
Jan 2016-, Associate Professor, Shanghai Jiao Tong Uniersity
Feb 2008- Dec 2015, Research Assitant, Shanghai Jiao Tong University
June 2012-June 2013, Visiting Researcher, ENS, France
Sep 2008- Mar 2009, Visiting Researcher, IBM Chinese Research Center
教授课程
2009-now, spring term/autumn term, for master of CS, Cryptography algorithm and protocol
2015-2017, spring term/autumn term, for master of CS, 计算机安全学
2013-now, autumn term, for undergraduates, Basics of Computer Security and Cryptography
2013-now, spring term/autumn term, for undergraduates of CS / IEEE class/ Zhiyuan honored class, Discrete Mathematics
论文发表
Selected papers since 2020：
[1] Chenke Wang, Shuangcheng Liu, Yu Long, Xian Xu, Dawu Gu. PulpoPay for Auditable Privacy CBDCs: Introducing High Concurrency and Offline Confirmation. Network and Distributed System Security Symposium (NDSS 2027). Accepted.
[2] Zhixuan Li, Chenke Wang, Dongkun Hou, Yu Long, Xian Xu, Dawu Gu. TCRWal: A Threshold Collusion-Resistant Wallet for Deterministic Key Derivation. In: Provable and Practical Security (ProvSec 2026), Lecture Notes in Computer Science, vol. 17082, pp. 188–208. Springer, 2027. DOI: 10.1007/978-981-92-5737-9_10.
[3] Chenke Wang, Shuangcheng Liu, Yu Long, Xian Xu, Dawu Gu. A²F: Enabling FHE-Based Smart Contracts over Additively Homomorphic Confidential Blockchains. International Conference on Blockchain Research and Applications (BCRA 2026), 2026.
[4] Hanqing Huang, Chenke Wang, Yu Long, Xian Xu, Dawu Gu. LockMeld: A Privacy-Preserving Cross-Chain Protocol for Confidential, Account-Based Blockchains. In: Information Security and Privacy (ACISP 2026), Part III, Lecture Notes in Computer Science, vol. 16794, pp. 350–370. Springer, 2026. DOI: 10.1007/978-981-92-3018-1_16.
[5] Lei Tian, Chenke Wang, Yu Long, Xian Xu, Mingchao Wan, Chunmiao Li, Shifeng Sun, Dawu Gu. Walnut: A Generic Framework with Enhanced Scalability for BFT Protocols. In: Information Security and Privacy (ACISP 2025), Part I, Lecture Notes in Computer Science, vol. 15658, pp. 351–371. Springer, 2025. DOI: 10.1007/978-981-96-9095-4_18.
[6] Haojun Zhai, Chenke Wang, Yu Long, Xian Xu, Dawu Gu. Secure Threshold Wallet Supporting Full Stealth Address. In: 2025 IEEE International Conference on Blockchain and Cryptocurrency (ICBC), pp. 1–9. IEEE, 2025. DOI: 10.1109/ICBC64466.2025.11114468.
[7] Zhonghui Ge, Chenke Wang, Yu Long, Dawu Gu. Shaduf++: Non-Cycle and Privacy-Preserving Payment Channel Rebalancing. IEEE Transactions on Dependable and Secure Computing, 22(2): 1281–1298, 2025. DOI: 10.1109/TDSC.2024.3424212.
[8] Chenke Wang, Zhonghui Ge, Yu Long, Xian Xu, Shi-Feng Sun, Dawu Gu. BlindShuffler: Universal and Trustless Mixing for Confidential Transactions. In: Proceedings of the 19th ACM Asia Conference on Computer and Communications Security (ASIA CCS 2024), pp. 1430–1446. ACM, 2024. DOI: 10.1145/3634737.3637669.
[9] Yu Song, Yu Long, Xian Xu, Dawu Gu. FaBFT: Flexible Asynchronous BFT Protocol Using DAG. In: Information Security and Cryptology (Inscrypt 2023), Part II, Lecture Notes in Computer Science, vol. 14527, pp. 343–355. Springer, 2024. DOI: 10.1007/978-981-97-0945-8_20.
[10] Zhonghui Ge, Jiayuan Gu, Chenke Wang, Yu Long, Xian Xu, Dawu Gu. Accio: Variable-Amount, Optimized-Unlinkable and NIZK-Free Off-Chain Payments via Hubs. In: Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS 2023), pp. 1541–1555. ACM, 2023. DOI: 10.1145/3576915.3616577.
[11] Zhonghui Ge, Yi Zhang, Yu Long, Dawu Gu. Magma: Robust and Flexible Multi-Party Payment Channel. IEEE Transactions on Dependable and Secure Computing, 20(6): 5024–5042, 2023. DOI: 10.1109/TDSC.2023.3238332.
[12] Jiajun Du, Zhonghui Ge, Yu Long, Zhen Liu, Shifeng Sun, Xian Xu, Dawu Gu. MixCT: Mixing Confidential Transactions from Homomorphic Commitment. In: Computer Security – ESORICS 2022, Part III, Lecture Notes in Computer Science, vol. 13556, pp. 763–769. Springer, 2022. DOI: 10.1007/978-3-031-17143-7_39.
[13] Yi Zhang, Zhonghui Ge, Yu Long, Dawu Gu. UCC: Universal and Committee-based Cross-chain Framework. In: Information Security Practice and Experience (ISPEC 2022), Lecture Notes in Computer Science, vol. 13620, pp. 93–111. Springer, 2022. DOI: 10.1007/978-3-031-21280-2_6.
[14] Shenwei Chen, Zhen Liu, Yu Long, Dawu Gu. DeChain: A Blockchain Framework Enhancing Decentralization via Sharding. In: Information Security and Privacy (ACISP 2022), Lecture Notes in Computer Science, vol. 13494, pp. 469–488. Springer, 2022. DOI: 10.1007/978-3-031-22301-3_23.
[15] Yu Song, Guoshun Fan, Yu Long, Zhen Liu, Xian Xu, Dawu Gu. Grape: Efficient Hybrid Consensus Protocol Using DAG. In: Data Privacy Management, Cryptocurrencies and Blockchain Technology (DPM/CBT 2022), Lecture Notes in Computer Science, vol. 13619, pp. 258–274. Springer, 2023. DOI: 10.1007/978-3-031-25734-6_16.
[16] Zhonghui Ge, Yi Zhang, Yu Long, Dawu Gu. Shaduf: Non-Cycle Payment Channel Rebalancing. In: Network and Distributed System Security Symposium (NDSS 2022). Internet Society, 2022.
[17] Chunliang Chen, Liangliang Wang, Yu Long, Yiyuan Luo, Kefei Chen. A Blockchain-Based Dynamic and Traceable Data Integrity Verification Scheme for Smart Homes. Journal of Systems Architecture, 130: 102677, 2022. DOI: 10.1016/j.sysarc.2022.102677.
[18] 霍鑫磊，龙宇，谷大武. 一种基于联盟链的兼具授权监管与隐私保护方案. 小型微型计算机系统，44(3): 589–595，2023.
[19] 葛钟慧，张奕，龙宇，刘振，刘志强，谷大武. 一种支持高并发的多人链下支付方案. 计算机学报，44(1): 132–146，2021.
[20] 蔡晓晴，邓尧，张亮，史久琛，陈全，郑文立，刘志强，龙宇，王堃，李超，过敏意. 区块链原理及其核心技术. 计算机学报，44(1): 84–131，2021.
[21] 高政风，郑继来，汤舒扬，龙宇，刘志强，刘振，谷大武. 基于 DAG 的分布式账本共识机制研究. 软件学报，31(4): 11
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