Date: Tue, 17 Aug 2004 22:27:32 +0100 From: "R. W." <list-freebsd-2004@morbius.sent.com> To: freebsd-geom@freebsd.org Subject: Re: Encrypted CD/DVDs via gbde or otherwise Message-ID: <200408172227.33570.list-freebsd-2004@morbius.sent.com> In-Reply-To: <xzpzn4tsy88.fsf@dwp.des.no> References: <200408162112.47356.list-freebsd-2004@morbius.sent.com> <xzpzn4tsy88.fsf@dwp.des.no>
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On Tuesday 17 August 2004 14:14, Dag-Erling Sm=F8rgrav wrote: > "R. W." <list-freebsd-2004@morbius.sent.com> writes: > > I have some data in an encrypted gbde partition. I'd like to be > > able to move some of it out to CD-R or DVD in an encrypted, > > mountable form (as opposed to simply encrypting a tar file and > > burning that). > > > > Most other encryption schemes support this through container files. > > You create a 650MB container, mount/attach it, copy the data, > > unmount/detach the container, and burn it to CD as a single file on > > a data disk. > > > > AFAIK gbde doesn't support container files. Is it on the roadmap? > > Or is there any alternative. > > (untested) > > # dd if=3D/dev/zero of=3Dcontainer bs=3D1048576 count=3D650 > # mdconfig -a -t vnode -f container > # gbde init /dev/md0 > # gbde attach /dev/md0 > # newfs /dev/md0.bde > # mount /dev/md0.bde /mnt > # <copy files to /mnt> > # umount /mnt > # gbde detach /dev/md0 > # mdconfig -d -u 0 > # burncd data container fixate > > you should then be able to 'gbde attach /dev/acd0' and mount > /dev/acd0.bde wherever you like. Nice Idea, but it didn't quite work, there was no /dev/acd0.bde after=20 attaching /dev/acd0. However, what did work was converting the container to an iso image=20 before burning, then using=20 # mount /cdrom # mdconfig -a -t vnode -f /cdrom/containe # gbde init /dev/md0 # gbde attach /dev/md0=20 # mount /dev/md0.bde /mnt=20 to access the encrypted data. Thanks for your help.
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