-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

To ensure the image has not been corrupted in transmit or tampered with,
perform the following two steps to cryptographically verify image integrity:

1. Verify the authenticity of this file by checking that it is signed with our
   GPG release key:

    $ curl https://raw.githubusercontent.com/turnkeylinux/common/18.x/keys/tkl-bookworm-images.asc | gpg --import
    $ gpg --list-keys --with-fingerprint release-bookworm-images@turnkeylinux.org
      pub   rsa4096 2023-05-22 [SC] [expires: 2043-05-17]
            2614 7592 087C 0EDE 4214  3B63 7761 DEBA BBCF BA7C
      uid           [ unknown] TurnKey GNU/Linux Bookworm Images (GPG signing key for TurnKey Linux Bookworm Images) <release-bookworm-images@turnkeylinux.org>
      sub   rsa4096 2023-05-22 [S] [expires: 2043-05-17]
      
    $ gpg --verify turnkey-xoops-18.0-bookworm-amd64.iso.hash
      gpg: Signature made using RSA key ID 26147592087C0EDE42143B637761DEBABBCFBA7C
      gpg: Good signature from "0"

2. Recalculate the image hash and make sure it matches your choice of hash below.

    $ sha256sum turnkey-xoops-18.0-bookworm-amd64.iso
      ec22bc7cac702eff1fa77568c24bb797342316433af341870d66b428128749e2  turnkey-xoops-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-xoops-18.0-bookworm-amd64.iso
      9154e73e1e931bfe08c1a8492891db11eeaab2041470d1e31aa615b1524517e6174ba32fb0be0666885d420b14f39cb7efe0c34df2db9134d6593bd7ee6ae7ec  turnkey-xoops-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-xoops-18.0-bookworm-amd64.iso.hash
      turnkey-xoops-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-xoops-18.0-bookworm-amd64.iso.hash
      turnkey-xoops-18.0-bookworm-amd64.iso: OK

    Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted.

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2QJrXN9zwgedX3hDoUqeiKnPcnmGjWnRhXvEzGUMd9d3In52al4gAqGrlohkf+UM
5DmXTxv2Pqf6YngQLFOiR+ryIRnmnEj4CEhGT0AhKKr4Sn6TrxZip4Xtcjlgjmaj
TQztHCYvA4x7A9iZ+BL3qXT89so7pfvemnVbTUHFuOWBV3JmdNUM94MMgqL1eIgO
eB0ojoMI3y1OGrsDgDald5zKiby4oygho6jzNb63rkgQve3Uxa0iQ9u+QIFp2L2i
GUv9n6mdCOa7I7eHksLrU3K4bOmZJPByxhEXdI8JiAEt1jU9PmQqDFaHEGsSxqbW
5EHOKw3hh0iAaEl0jJxLXoLVXXAcv2YRt4nH016Peku2K8PBID6WzynepVBug7T6
pqH7qSFZrXRnvdcnIN0OCSHUvzz7N7IljWO+dZiPpa/XfbQcVqg=
=cTgo
-----END PGP SIGNATURE-----