信息与智能大讲堂青年论坛
讲座题目：Multi-Client Secure and Efficient DPF-based Keyword Search for Cloud Storage
主讲嘉宾：黄橙 青年研究员，复旦大学
讲座时间：2024年5月27日 星期一 10：00
腾讯会议：616-9016-7251
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内容提要：
In this talk, we present a multi-client secure and efficient keyword search scheme for cloud storage, which is built upon distributed point function (DPF). Specifically, in the proposed scheme, outsourced keyword indexes are encoded by using garbled bloom filter and cuckoo filter, instead of bloom filter adopted by most of the state-of-the-art DPF-based schemes. In this way, clients can apply cuckoo hashing into DPF and utilize a segmentation method to interact with cloud servers for keyword search, and servers can obliviously aggregate DPF evaluation results to perform the search. Accordingly, the computational complexity at server side can be significantly reduced. Furthermore, the proposed scheme preserves constant downlink overheads, which is more communication-efficient for multi-keyword conjunctive search. To achieve privacy preservation and access control for multiple clients, we propose a double encryption method to encrypt outsourced indexes and correspondingly put forward an authorization algorithm from set-constrained pseudorandom functions by which fine-grained search-authorized keys can be generated, and collusion attacks among clients are addressed by integrating Wegman-Carter message authentication codes and cover-free systems. Our scheme is designed under both semi-honest and malicious models (i.e., malicious servers may return incorrect query results), and its security is proved in a simulation-based paradigm. We also develop a proof-of-concept prototype and perform extensive experiments to show our scheme's practicality and efficiency in terms of computation, communication, and storage overheads.
嘉宾简介：
黄橙：Dr. Cheng Huang (IEEE Member '20) received his B.Eng. and M.S. degrees in information security from Xidian University, China, in 2013 and 2016, respectively, and his Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, ON, Canada, in 2020. He is currently an Associate Professor with the School of Computer Science at Fudan University. Before joining Fudan University, he was a Research Fellow in the Department of Electrical and Computer Engineering at the University of Waterloo from 2020 to 2023. His research interests lie in the areas of security and privacy in vehicular networks, data security, and secure computation. He has published over 60 papers in prestigious journals and conferences, including IEEE TDSC, IEEE JSAC, IEEE TVT, and IEEE TII, and has received Best Paper Awards from ICCC '15, ICC '18, GLOBECOM '22, and ICCC '23. He serves as the Associate Editor for Peer-to-Peer Networking and Applications (Springer), the Symposium Co-Chair of IEEE GLOBECOM '24, and has served as the publicity chair of ICA3PP '22, PST '23, SustainCom '23, and as the TPC member of many international conferences.
主办单位：
《Journal of Information and Intelligence》
《西安电子科技大学学报》
《西安电子科技大学学报（社会科学版）》
《电子科技》
协办单位：
西安电子科技大学通信工程学院
致谢：
中国科技期刊卓越行动计划高起点新刊项目
联系我们：
《西安电子科技大学学报》编辑部 电话：029-88202853 邮箱：[email protected]
《信息与智能学报（英文）》编辑部 电话：029-88201709 邮箱：[email protected]
