crypting remote data

[gARetH baBB]

On Tue, 4 Mar 2008, david reinares wrote:

> It would be greatful to have crypting funcionality added to rsync, appart
> from using ssh to crypt transmissions.
> 
> I know this is not the original purpose for rsync, but anyway it's a fact
> that many people need (at least i need, I hope I'm not alone)
> additional security features for offsite backups, like having the data
> crypted at remote, but not at source, so the problem is crypting the data
> and then syncronizing it.

There are a couple of things which try to do this, eg. duplicity, but none 
which fully hit the nail on the head. The killing factor for duplicity is 
that to expire increments you need to do a new full backup.

rsyncrypto is probably what comes closest to the goal, it would be ideal 
though if rdiff-backup was to be combined with rsyncrypto to do it all in 
one - I personally use a three stage process using tar, rsyncrypto and 
then rdiff-backup (and then rsync).

When rsyncrypto gets working stdin/stdout support then the tar/rsyncrypto 
stage could be combined into one.

None of this is directly related to rsync itself though.