Backup encryption key

[Yuval Hager]

On Thursday 23 April 2009, Dotan Cohen wrote:
> > How do you use the password in an automated backup then?
>
> Actually, I do not automate it. This is the command that I use to make
> the tarball:
> $ tar -zcvf - /home/user/ | openssl des3 -salt -k PASSWORD | dd
> of=DATE.tbz
>
> And this one to decrypt it:
> $ dd if=DATE.tbz | openssl des3 -d -k PASSWORD | tar zvxf -

Well, I was looking for a more streamlined solution. Something that is:
1) automatic
2) offsite (e.g. online)
3) bandwidth and space efficient (due to (2) above)
4) (opt.) encrypted
5) incremental

I currently use rdiff-backup, but it does not abide to (3) above. I started 
looking into duplicity (from the same author), and then thought about 
description, hence the original post.

-- 
yuval
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