Re: GBDE - Destroy command not working
From: Dany Nativel (dany_list_at_natzo.com)
Date: 02/20/04
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Date: Thu, 19 Feb 2004 22:00:39 -0500 To: freebsd-questions@freebsd.org
It didn't work but after several other attempts. I've been able to run
it using a specific combination.
So to summarize, in my case, I can only run "destroy" :
- using external lock files (-l parameter mandatory)
- with the current key only (no -n -1 parameter to say destroy them all)
- using /dev/xxx (xxx only doesn't work)
First, what's not working :
--> Without detached lockfile
# kldload geom_bde
# gbde init /dev/da0 -i
# gbde attach da0
# gbde detach da0
# gbde destroy da0
Enter passphrase:
gbde: read: Inappropriate ioctl for device
and also
# gbde destroy /dev/da0
Enter passphrase:
gbde: No -L option and no space in sector 0 for lockfile
--> With detached lockfile
# gbde destroy da0 -l /etc/mykey
Enter passphrase:
gbde: Error 22 decrypting lock
and then
# gbde destroy /dev/da0 -l /etc/mykey
Enter passphrase:
Wrote key 0 at 5371894
And it worked for the current key.
I also tried to use the -n x, --n x parameter (with x= -1, 1) but it
never worked!
At one point I even received a
Fatal trap 12: page fault while in kernel mode (many of them in fact)
Dany Nativel wrote:
> I've been playing around with GBDE under 5.2RC2-1. It's a fantastic
> encrypted FS.
> Following the man page, I've tried to use the destroy command but
> without success.
>
> Here is what I did to create the encrypted FS (for this test I didn't
> use the /dev/random to fill-up the disc).
>
> # kldload geom_bde
> # gbde init /dev/da0 -i
> # gbde setkey /dev/da0 -n 2
> # gbde attach /dev/da0 # newfs /dev/da0.bde
> # mount /dev/da0.bde /mnt/usbkey
> --> use the FS, works fine
> # umount /mnt/usbkey
> # gbde detach da0
>
> Then according to the man page I should use :
> #gbde destroy da0 -n -1 to purge all keys but I get :
> gbde: illegal option -- n
>
> so I changed to :
> #gbde destroy da0 --n -1 and got :
> gbde: read: Innapropriate ioctl for device
>
> so I changed to :
> #gbde destroy /dev/da0 --n -1 and this time I get the password prompt
> but it fails to destroy anything :
> Enter passphrase:
> Opened with key 0
> gbde: No -L option and no space in sector 0 for lockfile
>
> Maybe I didn't understand the purpose of the this command. I thought
> it was going to replace each lock key with some random data.
> Can somebody explain me how to use the "destroy" command ?
>
> Thanks
> Dany
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- Previous message: John: "Re: problem starting X with normal user"
- In reply to: Dany Nativel: "GBDE - Destroy command not working"
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