-----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-fileserver-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-fileserver-18.0-bookworm-amd64.iso
      e5d8e5e0650faab1dd1fe1d6be9eefbaf8cc8f016dbab9a194b9ae82277a5a34  turnkey-fileserver-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-fileserver-18.0-bookworm-amd64.iso
      e3f69593ff03035b4aaa1874313cb73622f53f2e642d0a2966edbb87783f54d6037d46caa067a2cc0580808539a9b7ab5a7c6c2c3ec60cf7b6d94beafd787cc8  turnkey-fileserver-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-fileserver-18.0-bookworm-amd64.iso.hash
      turnkey-fileserver-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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qCX35js/y9b7CkQdjnRuSknJmQBrHVHUevwBKqOhdADPq+bZpCqmx9/ln4O705Yh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=Hd6C
-----END PGP SIGNATURE-----