Re: cryptoloop as user?
Is there away to set a directory to be crypted? Rather than creating a
file to hold a filesystem and then crypting that? That way, any access
of the directory would render unusefull information (or just deny
access), until it was mounted (or unlocked in some fashion) by the
password.
Cheers
Geoff
On Thu, Dec 12, 2002 at 09:01:34PM +0100, ernst wrote:
>
> Nop, can't do.
>
> I have an crypted fil created with 'dd' and ciper blowfish. this file is
> mounted at loop0.
>
> when I mount with the 'mount' command, debian understand that this is my
> /folder/cryptfile.
>
> when I try to do this in fstab, it doesn't understand that loop0 is
> cryptfile or vice versa, so it need to know about them bouth. and that's
> where my problem is, how to put 'cryptfile' 'loop0' and mountpoint in
> fstab so that debian understands it, and with the right permission.
>
> so what I did was that I just created a couple of scripts, one that mounts
> and set the right permission, and one that umount and detach the loop
> device, this is working fine.
>
> the odd thing was when I tryed your solution, it didn't even give me an
> error:)
>
> thanks anyway
>
> /ernst
>
>
>
> On 11 Dec 2002, Matthias Hentges wrote:
>
> > Am Die, 2002-12-10 um 16.20 schrieb Rob Weir:
> > > On Mon, Dec 09, 2002 at 07:15:08PM +0100, ernst wrote:
> > > > Hi
> > > >
> > > > I'm useing cryptoloop to protect my data on a ibmx20 laptop. Im running
> > > > 2.4.19 kernel with the cryptoloop and cryptoapi modules innstalled.
> > > >
> > > > As root, I have created a file with dd, used blowfish as cipher and
> > > > mounted it trough loop0, so far so good.
> > > >
> > > > But I am wondering if there is an easyer way to du this, I would like to
> > > > do this in bootup, as user.
> > > >
> > > > The way I'm doint it now is (as root):
> > > > losetup -e blowfish -k 128 /dev/loop0 /usr/tmp/my_crypt_file
> > > > mount /dev/loop0 /home/ernst/mnt/my_crypt_file
> > > > chown -R ernst:users /home/ernst/mnt/crypt
> > > >
> > > > Then I'm there, I can work on my docs as a user, but I'm wondering if
> > > > there is an easyer way of soing it?
> > > >
> > > > To release this again I'm doing :
> > > > umount /dev/loop0
> > > > losetup -d /dev/loop0
> > >
> > > There isn't really any way to delegate this sort of authority under
> > > Linux at the moment,
> >
> > Yes there is. Edit your fstab and you are done.
> >
> > /home/$USER/crypto0 /some/dir reiserfs \
> > defaults,noauto,loop,encryption=twofish,user 0 0
> >
> > [...]
> >
> > --
> >
> > Matthias Hentges
> > [www.hentges.net] -> PGP + HTML are welcome
> > ICQ: 97 26 97 4 -> No files, no URLs
> >
> > My OS: Debian Woody: Geek by Nature, Linux by Choice
> >
> >
> >
> > --
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> >
> >
>
>
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