学术报告:Efficient Non-Interactive Multi-Client Searchable Encryption with Support for Boolean Queries

:Efficient Non-Interactive Multi-Client Searchable Encryption with Support for Boolean Queries

报告人:Dr. Joseph Liu (廖啟瑞博士),Monash University, Australia

:2016年12月20日(星期二)

:上午10点-11:30

:A203学术报告厅

主持人:张方国教授

:Motivated by the recent searchable symmetric encryption protocol of Cash et al., we propose a new multi-client searchable encryption protocol in this work. By tactfully leveraging the RSA-function, our protocol avoids the per-query interaction between the data owner and the client, thus reducing the communication overhead significantly and eliminating the need of the data owner to provide the online services to clients at all times. Furthermore, our protocol manages to protect the query privacy of clients to some extent, meaning that our protocol hides the exact queries from the data owner. In terms of the leakage to server, it is exactly the same as Cash et al., thus achieving the same security against the adversarial server. In addition, by employing attribute-based encryption technique, our protocol also realizes the fine-grained access control on the stored data. To be compatible with our RSA-based approach, we also present a deterministic and memory-efficient `keyword to prime' hash function, which may be of independent interest.

报告人简介:Joseph Liu (廖啟瑞博士),澳大利亚蒙纳士大学(Monash University)信息技术学院 (Faculty of Information Technology)资深讲师,担任过一些国际会议的主席,包括ProvSec 2007, 2014 以及 ACISP 2016 等。2004年取得香港中文大学信息工程系的博士学位,主要研究范围包括:网络安全、个人隐私、身份核实、公钥密码、云安全、智能城市安全等。之前,在新加坡资讯通讯研究院(Institute for Infocomm Research, I2R)担任过7年研究院。共发表超过100篇论文,包括多份 IEEE 期刊 (例 如 IEEE TIFS, IEEE Trans. on Computers, IEEE TKDE, IEEE Trans. on Vehicular Technology, IEEE Network 等),其中两篇论文更获 ESORICS 2014 及 ESORICS 2015 颁发最佳论文奖。 论文被引用超过3500 次, H 指数高达26。其中一项有关轻量级密码学的研究,在2013年被ISO采纳成国际标准,供业内同行使用。