[Borgbackup] borg cache / security aspects
Felix Schwarz
felix.schwarz at oss.schwarz.eu
Sun Feb 17 17:15:44 EST 2019
Hi,
I'd like to know more about security aspects of borg's cache when using
encrypted repos.
If I use an encrypted borg repo and store borg's cache right next to the
actual repo (by setting "BORG_CACHE_DIR") are there any security considerations?
So if I assume an attacker gets access to the (encrypted) borg repo and the
cache files (but not the repo key) can he deduce anything from the cache?
Background:
- I'd like to back up a somewhat bigger dataset (~2 TB) from a remote server
with limited connectivity (100 Mbit).
- The borg repo should be on external hard drives.
- I would like to store the borg cache on the same drive so I can run the
backup from multiple work stations. Rebuilding the cache on a new machine
takes quite a while to rebuild (just 100 Mbit).
- I don't want to worry if someone steals the hard drive.
Thank you very much,
Felix
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