Storage forum

General discussion

The Approach of Fast Logic Data Destruction for Military SSD

Quick Erase which means full disk logic destruction in a few seconds to get all data in the SSD unreadable is critical in some specific environments of military applications.

Generally, there are following different requirements for Quick Erase, and the implementation methods by SSD firmware are different:
1. After the Quick Erase, the disk remains visible in OS and reusable after initialization, just all data are read as 0xFF by Winhex.

For this type of Quick Erase, the firmware normally erases AES Encryption Key first and then resumes the mapping table to factory defaults. Erasing Encryption Key is to ensure the data can’t be correctly restored, and resuming the mapping table to factory defaults destructs the mapping connections between physical and logical addresses so that the data in the SSD can’t be correctly read.

Notes have to be taken for such Quick Erase:

If the SSD receives program commands again or there is data in SDRAM hasn’t been written into NAND Flash during executing the Quick Erase, the data writes into the SSD would be continued after Quick Erase, then not all data are read as 0xFF with Winhex.

Two solutions for this: One is wiping the data in SDRAM before executing data destruction to avoid the data in SDRAM being written into NAND Flash after the erase. Another solution is enable the Write Protect function when executing data destruction until power on next time, this prevents the writing command received after executing data destruction from continuing the data
writes into SSD.

2. After Quick Erase, the SSD is invisible in OS and of course the status of the data inside can’t be checked by software.

This can be operated under the following order:

Wipe the mapping table after erasing the encryption key, and then destruct the firmware, in such case, the SSD can only work again after returning to factory for re-implanting firmware.

Discussion is locked
You are posting a reply to: The Approach of Fast Logic Data Destruction for Military SSD
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: The Approach of Fast Logic Data Destruction for Military SSD
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.

Popular Forums

icon
Computer Newbies 10,686 discussions
icon
Computer Help 54,365 discussions
icon
Laptops 21,181 discussions
icon
Networking & Wireless 16,313 discussions
icon
Phones 17,137 discussions
icon
Security 31,287 discussions
icon
TVs & Home Theaters 22,101 discussions
icon
Windows 7 8,164 discussions
icon
Windows 10 2,657 discussions

SMART HOME

This one tip will help you sleep better tonight

A few seconds are all you need to get a better night's rest.