lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20100126182439.GA31620@tanis.toppoint.de>
Date: Tue, 26 Jan 2010 19:24:39 +0100
From: Stefan Weimar <full-disclosure@...is.toppoint.de>
To: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Disk wiping -- An alternate approach?

Hi,

Am 26. Januar schrieb Michael Holstein:

> No, wear-leveling (done at the memory controller level) will dynamically
> re-map addresses on the actual flash chip to ensure a relatively
> consistent number of write cycles across the entire drive.
> 
> The only way to completely "wipe" a flash disk is with a hammer.

Yes, but what if I overwrite the device with random data from the very
first to the very last byte? Suppose the size of the device hasn't
decreased I'd think that wear-levelling has no chance to spare blocks in
this case.

kind regards
Stefan
-- 
make -it ./work

GnuPG-Key: B96CF8D2 <sw@...is.toppoint.de>
Fingerprint: D8AC D5E7 6865 19B1 385F  8850 2AB7 6A82 B96C F8D2

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ