Successful test of encrypted usb drive

mike mike.cloaked at gmail.com
Thu Apr 3 21:19:07 UTC 2008


Bruno Wolff III <bruno <at> wolff.to> writes:

> dd if=/dev/urandom of=/dev/sdc1

> cryptsetup luksFormat /dev/sdc1
> cryptsetup luksOpen /dev/sdc1 luks-usb

> mkfs -t ext3 /dev/mapper/luks-usb

> cryptsetup luksClose /dev/mapper/luks-usb

I tried this tonight and creating the encrypted file system on the
stick worked fine... but after unplugging and plugging back in it did
not automount or request the luks passphrase 
- so I had to do the following:

(there was a pre-existing /mnt/usb mount point)

So
cryptsetup luksOpen /dev/sdc1 luks-usb
Enter the luks passphrase when prompted and then
mount -t ext3 /dev/mapper/luks-usb /mnt/usb

Now files can be copied into /mnt/usb/ just fine.

To close I had to do:
umount /mnt/usb
cryptsetup luksClose /dev/mapper/luks-usb

All of this was in rawhide but presumably the stick will also mount the same
way in F8.




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