-----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-domain-controller-18.1-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-domain-controller-18.1-bookworm-amd64.iso
      34cdf0f87e0e376dbf1164bf178fefda3b27158bce34bc9168cce1d3d3222cc6  turnkey-domain-controller-18.1-bookworm-amd64.iso

    $ sha512sum turnkey-domain-controller-18.1-bookworm-amd64.iso
      5cfbbe137e061d60b87c1387d949cfc369afbb2233a2c1b534759af8daf5c0010a98d18dc4d549ee3d0eba7e38cc2acdc5aa47aa4e6dab0410c75a17a93ba686  turnkey-domain-controller-18.1-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-domain-controller-18.1-bookworm-amd64.iso.hash
      turnkey-domain-controller-18.1-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-domain-controller-18.1-bookworm-amd64.iso.hash
      turnkey-domain-controller-18.1-bookworm-amd64.iso: OK

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

-----BEGIN PGP SIGNATURE-----
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=4039
-----END PGP SIGNATURE-----