Many applications compute on sensitive data, such as confidential user information. Even if these applications are terminated, sensitive data often persist in the main memory indefinitely until the deallocated pages are overwritten by OS. The conventional software-only solution of zeroing pages at deallocation generates a significant amount of bursty memory traffic to slow down other processes running concurrently. To address this, we propose Secure DRAM, a novel DRAM architecture that enables low-cost, secure deallocation of physical page frames. By preventing access to unallocated DRAM pages and not refreshing them, Secure DRAM effectively closes the window of vulnerability with minimal performance overhead.
|Journal||ieice electronics express|
|Publication status||Published - 2017 Apr 26|
Bibliographical noteFunding Information:
This research was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT & Future Planning (MSIP) (NRF- 2014R1A1A1005894 and NRF-2017R1C1B2007273). Jae W. Lee is the corresponding author.
© IEICE 2017.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering