With the increasing concerns of security, the secure deletion for SSDs becomes very costly due to its out-of-place update (i.e., an update is performed in a new location leaving the old data un-touched). Some previous studies used a combined erase-based and cryptography-based method to find a heuristic deletion scheme. However, the deletion overhead is still large since a key may be associated with too many pages. Therefore, how to reduce the secure deletion overhead further is becoming an interesting research issue. In this paper, a temperature-aware secure deletion scheme (TASecure) is proposed. Data with the same temperature are stored in the same region in order to reduce the overhead of secure deletion. The temperature of a data is referred to the frequency of the data is updated. Moreover, the regions based on their temperature are associated with different numbers of keys and are applied with different secure deletion schemes. Finally, the experimental results indicate that our proposed secure deletion scheme can reduce the secure deletion cost about 1.2x to 19x compared to previous studies.
|Original language||English (US)|
|Title of host publication||GLSVLSI 2019 - Proceedings of the 2019 Great Lakes Symposium on VLSI|
|Publisher||Association for Computing Machinery|
|Number of pages||4|
|State||Published - May 13 2019|
|Event||29th Great Lakes Symposium on VLSI, GLSVLSI 2019 - Tysons Corner, United States|
Duration: May 9 2019 → May 11 2019
|Name||Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI|
|Conference||29th Great Lakes Symposium on VLSI, GLSVLSI 2019|
|Period||5/9/19 → 5/11/19|
Bibliographical noteFunding Information:
This work was partially supported by NSF I/UCRC Center Research in Intelligent Storage and the following NSF awards 1421913, 1439622, 1525617, and 1812537.
© 2019 ACM.
- Invalid data
- Secure deletion
- Solid state drive