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Storing encryption keys for backup drives (lemmy.world)

submitted 8 months ago* (last edited 8 months ago) by janne_fran_innsbruck@lemmy.world to c/selfhosted@lemmy.world

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I'm planning to setup backup on my nas with the 3-2-1 backup rule.

For the backup disks I want full disk encryption, but I also want to be really sure that I don't lose the encryption keys if I lose my phone and computer where I have my password manager.

What is a good practice to store the encryption key(s)?

One thought I had was to have an unencrypted partition on the backup disks that stores an encrypted keepass database with the key.

Any tips or experiences are welcome.

PS. I want to avoid cloud-based options.

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[–] ki9@lemmy.gf4.pw 3 points 8 months ago (1 children)

You can dettach your headers with --header.

I've started putting the header and key on my boot partition on a USB key. Without the usb, the hard drives appear to be filled only with random data (plausible deniability). After booting, the USB can be removed to prepare for a panic shutdown.

[–] irmadlad@lemmy.world 1 points 8 months ago

You can dettach your headers with --header.

I did not know this. That would seem, abiding by your system, to be more secure. I will have to investigate.

Thanks for sharing.