报告人：张锐
报告题目：Access Control Encryption from the LWE Assumption
时间：2017-09-02 (星期六) 16:30 ~ 2017-09-02 (星期六) 18:00
地点：成功楼603报告厅
主办：福建省网络安全与密码技术重点实验室
参加对象：计算机方向的研究生，感兴趣的教师和其他方向的研究生
报告摘要：Damg{\aa}rd et al. proposed a new primitive called access control encryption (ACE) \cite{DHO16} which not only protects the privacy of the message, but also controls the ability of the sender to send the message. We will give a new construction based on the Learning with Error (LWE) assumption \cite{Reg05}, which is one of the two open problems in \cite{DHO16}. Although there are many public key encryption schemes based on LWE and supporting homomorphic operations, we found that not every scheme can be used. In order to keep the security and correctness of ACE, the random constant chosen by the sanitizer should satisfy a stricter condition. We also give a different security proof of ACE from LWE similar to that from DDH. We note that although the modulus of LWE should be super-polynomial, the ACE scheme is still as secure as the general public key encryption scheme based on the lattice \cite{BV14}.
报告人简介：张锐，中国科学院信息工程研究所研究员、博士生导师。清华大学工学学士学位，东京大学理工学硕士、博士学位。先后任日本学术振兴会（JSPS）特别研究员、日本产业技术综合研究所研究员，2008-2011年兼任东京理工大学电气工程系客座副教授。主要研究领域为信息安全、密码学理论与应用、云计算安全、区块链技术，在各种期刊国际会议上发表论文60余篇，包括《IEEE Trans. on Dependable and Secure Computing》(TDSC)、《IEEE Trans. on InformationForensics and Security》(TIFS)、《IEEE Trans. on Parallel and Distributed Systems》(TPDS)、《IEEE Trans. on Multimedia》(IEEE Multimedia)、《IEICE Trans.》期刊以及Asiacrypt、ESORICS、PKC、CT-RSA等国际知名会议，被多次引用。曾获得YRP2007、SCIS2011、SCN2012等国际会议最佳论文奖，担任国际学术会议的程序委员会委员40余次，活跃于国际信息安全学术界。尤其是他对于NESSIE（欧洲密码标准）有关公钥加密标准的安全性分析以及向IEEE P1363.3等国际标准的提案受到来自与国际学术界及工业界的广泛关注。
