[Freedombox-discuss] Roadmap / Wishlists
On Tue, Apr 19, 2011 at 1:02 PM, AnotherPeasant <versparis at gmail.com> wrote:
>?Do you remember where that study was, or have a link?
Here's one link, from another list. I doubt that this is the only study
in the area, but it is the only one I know.
From: Alexander Klimov <alserkli@inbox.ru>
Date: Mon, Feb 21, 2011 at 5:48 PM
Subject: [cryptography] Reliably Erasing Data From Flash-Based Solid
State Drives
To: cryptography at randombit.net
<http://www.usenix.org/events/fast11/tech/full_papers/Wei.pdf>:
We empirically evaluate the effectiveness of hard
drive-oriented techniques and of the SSDs' built-in
sanitization commands by extracting raw data from the SSD's
flash chips after applying these techniques and commands. Our
results lead to three conclusions: First, built-in commands
are effective, but manufacturers sometimes implement them
incorrectly. Second, overwriting the entire visible address
space of an SSD twice is usually, but not always, sufficient
to sanitize the drive. Third, none of the existing hard
drive-oriented techniques for individual file sanitization are
effective on SSDs.
--
Regards,
ASK
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