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feat: allow backups to be encrypted with age (#432)

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GPG is known to have usability issues and is generally cumbersome to
use. age [0] is a modern alternative to GPG that is designed by a
cryptographer that has worked and continues to work on Golang's crypto
packages for years.

Allowing age to be used to encrypt backups dramatically simplifies the
backup process.

[0]: https://age-encryption.org/
This commit is contained in:
nick comer
2024-08-19 16:49:49 -04:00
committed by GitHub
parent 74e065cbb9
commit 44ad3bbda2
12 changed files with 317 additions and 75 deletions
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11
docs/how-tos/encrypt-backups-using-gpg.md
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@@ -5,13 +5,4 @@ parent: How Tos
nav_order: 7
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# Encrypt backups using GPG
The image supports encrypting backups using GPG out of the box.
In case a `GPG_PASSPHRASE` or `GPG_PUBLIC_KEY_RING` environment variable is set, the backup archive will be encrypted using the given key and saved as a `.gpg` file instead.
Assuming you have `gpg` installed, you can decrypt such a backup using (your OS will prompt for the passphrase before decryption can happen):
```console
gpg -o backup.tar.gz -d backup.tar.gz.gpg
```
See: [Encrypt Backups](encrypt-backups)