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docker-volume-backup/docs/how-tos/encrypt-backups-using-gpg.md
Lennart 8a64da4b0b
Feature: PGP Asymmetric Encryption (#456) 
* feat: asym encryption

* tests

* docs

* refactor

* logs & errs

* comment

* Update docs/reference/index.md

use correct env var in example

Co-authored-by: Frederik Ring <frederik.ring@gmail.com>

* Update cmd/backup/encrypt_archive.go

use errwarp for initial error msg

Co-authored-by: Frederik Ring <frederik.ring@gmail.com>

* rm orphaned code in encryption functions

* inline readArmoredKeys

* naming -GPG_PUBLIC_KEYS- to GPG_PUBLIC_KEY_RING

* add eror handling for closing func

* use dynamically generated keys for testing

* rm explicit gpg-agent start

* rm unnecessary private_key export

* pass PASSPHRASE correctly to the decryption command

* capture defer errors

* log & err msg

---------

Co-authored-by: Frederik Ring <frederik.ring@gmail.com>
2024-08-11 10:11:23 +02:00

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Encrypt backups using GPG default How Tos 7

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):

gpg -o backup.tar.gz -d backup.tar.gz.gpg