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Encrypted backups to the cloud (feddit.org)

submitted 3 days ago by [email protected] to c/[email protected]

29 comments fedilink hide all child comments

How would or do you backup your home server? I don't have enough physical storage (for now) at home to store some backups, so I want to upload it to the cloud. Of course I want the backup to be encrypted, but I don't want to enter the password every time by server does a backup. I am currently using borg on my PC and do it manually. How do I create a encrypted backup without entering the key manually? Do I hardcode it somewhere? Don't really like that. I am also fine with trying other backup software.

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[–] [email protected] 8 points 3 days ago (1 children)

You have basically two options.

Symmetric Encryption. That means you use the same password/key for writing the Backup and for reading the backup. Here you have to write the password somewhere, depending on the OS there are options like keychains or similar that can hold the password so that the password is only available once you are loged in or have unlocked the keychain.
Asymmetric Encryption. That means you have different passwords/keys to read and write the backup. PGP is an example here. Here you can just simply use one key to write the backup, this key can become public and you do not have to worry about your backup since it will only be readable with the 2. key.

I personally use Restic with a password that is only readable by the system root user stored on the filesystem. Since I use Full Disk Encryption i do not have to worry too much about when the secret is available in clear text at runtime.

[–] [email protected] 4 points 3 days ago

+1 for restic. I have additionally started using autorestic with it and have been happy how it operates.