[Mageia-dev] unable to mount encrypted partitions created with drakdisk

Wed Mar 21 02:36:33 CET 2012

On Tue, 20 Mar 2012 20:57:47 -0400, simple w8 <simplew8 at gmail.com> wrote:
+
+> Hi,
+>
+> I use sometimes to boo Windows, and if i need some file i use to mount
+> my /home encrypted partition using FreeOTFE (or TrueCrypt) to access
+> the files i need, but i saw today that the /home partition that was
+> created in mageia is not possible to mount with FreeOTFE or TrueCrypt.
+>
+> But the /home partition created with mandriva drakdisk can be mounted
+> with those 2 applications, so seams that Mageia drakdisk isnt doing
+> something right.
+
+That's likely a result of
+https://bugs.mageia.org/show_bug.cgi?id=3092
+
+With the default settings, cryptsetup uses cbc mode encryption,
+which makes it much more likely that it can be cracked.
+
+See http://clemens.endorphin.org/nmihde/nmihde-A4-os.pdf
+for an explanation of how this is done.
+
+In Mageia's diskdrake, the setting is overridden to use xts mode,
+instead of cbc mode.
+
+If you prefer to use the less secure method, in order
+to keep it compatible with the windows applications, you'll
+have to re-encrypt it manually with
+cryptsetup luksFormat /dev/sd??.
+
+Don't forget to backup the data first, as this will erase that
+device.
+
+Regards, Dave Hodgins
+