讲座题目：无记忆RAM实现高效可扩展的安全存储系统 主讲人：杨峻 教授 开始时间：2019-08-13 09:30:00 结束时间：2019-08-13 10:30:00 讲座地址：华东师范大学数学馆201 主办单位：计算机科学与技术学院
报告人简介： 杨峻，匹兹堡大学电子与计算机工程系教授。研究方向为计算机体系结构，研究方向包括GPU设计、新兴的内存技术、互连网络、3D集成以及电源和功耗管理技术。获得了2008年的NSF CAREER award、2010年的IEEE Micro Top Picks奖、2013年ISLPED和2007年ICCD最佳论文奖。被列入了HPCA名人堂。 报告内容： Personal and enterprise users increasingly store files and data in the clouds, leading to privacy concerns as remote servers and software may not be fully trusted. To completely protect the system from address access pattern leakage, we need to adopt Oblivious RAM (ORAM), which obfuscates the physical address by remapping it after each access. However, the ORAM access is still very expensive in terms of bandwidth usage. In this talk, I will focus on designing efficient and scalable secure memory systems for ORAM. In particular, the co-run interference between secure application with ORAM protection (S-App) and normal application without protection (NS-App) is significant. We developed approaches to allocate shared resources cooperatively between S-Apps and NS-Apps. We further developed approaches to offload expensive ORAM operations to an ORAM based secure engine on buffer-on-board architecture. Our designs enable high-level privacy protection with low execution interference on cloud servers. Our evaluation shows that the proposed designs effectively protect application privacy on mainstream computing servers with untrusted memory, and mitigate the co-run interference on NS-Apps. |
