Hi to All,
finally I've found the right (and tested) procedure in this simple
script, made by sowbug:
https://gist.github.com/sowbug/c7f83140581fbe3e6a9b3ddf24891e77#gistcomment-3531970
# All the code from
http://billauer.co.il/blog/2010/10/encrypted-iso-dvd-luks-dm-crypt-fedora-linux/
MB_COUNT=100
VOL_NAME=MyVolName
DIR_TO_COPY=/tmp/mydir
# Make a 100MB disk image
dd if=/dev/zero of=disk.img bs=1M count=$MB_COUNT
# become root
sudo su
# write to the image
# ****** NOTE that you'll be prompted three times for a passphrase
losetup /dev/loop1 disk.img && \
cryptsetup luksFormat /dev/loop1 && \
cryptsetup luksOpen /dev/loop1 mybackupdisk && \
genisoimage -R -J -joliet-long -graft-points -V $VOL_NAME -o
/dev/mapper/mybackupdisk $DIR_TO_COPY
# close the device
cryptsetup luksClose /dev/mapper/mybackupdisk && \
losetup -d /dev/loop1
# Now you have disk.img that can be burned to a CD/DVD, or just mount it
in Linux.
# You'll be prompted for the passphrase each time you mount it.
Thanks
Davide
Italy
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