[dm-crypt] About using luks under Windows (FreeOTFE) ?

Mickael mki2268 at yahoo.com
Sun Jun 29 23:55:39 CEST 2014

I'm trying to build an encrypted DVD (Backup Datas) readable under Linux and Windows.
I've build an ISO9660 DVD crypted with luks like this:
dd if=/dev/zero of=/tmp/DVD.iso bs=1M count=4470
sudo losetup /dev/loop1 /tmp/DVD.iso
sudo cryptsetup luksFormat /dev/loop1
sudo cryptsetup luksOpen /dev/loop1 cryptDVD
sudo genisoimage -r -J -joliet-long -graft-points -V BackUp_01 -o /dev/mapper/cryptDVD /mnt/save/BackUp/
sudo cryptsetup luksClose /dev/mapper/cryptDVD
sudo losetup -d /dev/loop1

Under Linux, after burning the iso and reloading the DVD, the luks partition is detected; a dialogbox ask for the passphrase and the DVD is automatically mounted and decrypted.

Under Window 7 (32bits), I've installed the program FreeOTFE to read the luks partition
Unfortunately, the crypted DVD can't be mounted...
When I select 'mount partition' and 'Show CD/DVD drives', there is an access to the DVD (spinning), but the drive isn't displayed (only Hard drive partitions are displayed). FreeOTFE seems to have issues with optical drives !? (The DVD is seen by windows as an empty drive because of the encryption)
Even by mounting the file DVD.iso as a volume, FreeOTFE don't recognise it ??? Why, ISO9660 should be supported by Windows !?

As the project is old and not maintained anymore, I'm wondering if it's a good idea to use this program ?
Do someone know a better solution ?

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