I've noted in the past that since the rysnc algorithm doesn't need to actually be able to compute the signatures at the remote end - it just needs to know them.
So if the signatures are sent with an encrypted block, you could easily do encrypted backups, with the all the advantages of rsync.
And if you included a hash strong enough in your signature you could share blocks too, giving you the space advantage of backuppc.
The only downside is the block boundaries are fixed on the first backup which make intelligent choice of blocksize critical.
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timeasmymeasure
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Date: 2008-08-07 08:57 am (UTC)So if the signatures are sent with an encrypted block, you could easily do encrypted backups, with the all the advantages of rsync.
And if you included a hash strong enough in your signature you could share blocks too, giving you the space advantage of backuppc.
The only downside is the block boundaries are fixed on the first backup which make intelligent choice of blocksize critical.