Prudent use of Dynamic Random Access Memory (DRAM) cells in security sensitive applications

在安全敏感应用中谨慎使用动态随机存取存储器 (DRAM) 单元

• 批准号: 458433-2013
• 负责人: Tripunitara, Mahesh
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541919
• 关键词: Prudent; use; Dynamic; Random; Access

Dynamic Random Access Memory (DRAM) is a dominant technology for volatile, low-latency storage in modern mobile, tablet, laptop and desktop computer systems. One of the properties of DRAMs that can affect such correct functioning regards its remanence - individual cells of the DRAM retain the data that is stored in them for relatively long periods of time after the DRAM no longer has a source of power. Prior research has shown that with present-day DRAM technology, the data in about 50% of the cells can be reliably recovered even minutes after the DRAM has lost power. This negatively impacts security - many applications rely on the presumed volatility of DRAM cells to keep data secret. In this project, we propose to study and develop a deeper understanding of the characteristics of remanence, and to leverage this understanding to develop middleware solutions for security sensitive applications to use DRAM cells prudently so that data remains secret as such applications intend. The research is in collaboration with a Canadian company and will train HQP, and is therefore of value to Canada.

动态随机存取存储器（DRAM）是用于现代移动的、平板、膝上型和台式计算机系统中的易失性、低延迟存储的主导技术。DRAM的特性之一，可以影响这种正确的功能，关于其剩磁-DRAM的各个单元保持存储在它们中的数据在DRAM不再具有电源之后相对长的时间段。先前的研究表明，使用当今的DRAM技术，即使在DRAM断电后几分钟，也可以可靠地恢复大约50%的单元中的数据。这对安全性产生了负面影响-许多应用程序依赖于DRAM单元的假定易失性来保持数据机密。在这个项目中，我们建议研究和开发更深入的理解剩磁的特点，并利用这种理解开发安全敏感应用程序的中间件解决方案，谨慎使用DRAM单元，使数据保持秘密，因为这样的应用程序的意图。这项研究是与一家加拿大公司合作进行的，将培训人力资源规划人员，因此对加拿大很有价值。