-----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-simplemachines-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-simplemachines-18.0-bookworm-amd64.iso
      4c46de1765153b42110dccd6b779de618fec528677b9c04932c46e7b6e3b4a0a  turnkey-simplemachines-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-simplemachines-18.0-bookworm-amd64.iso
      889afdca4819d33d1ddfb75b4b40e93fe9d4cbed49d5b91a2047f9c6f99f3a43b3a245222347f25ee9801eb7700648469a5e26ef0b51abf39e517f1e68d09e83  turnkey-simplemachines-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-simplemachines-18.0-bookworm-amd64.iso.hash
      turnkey-simplemachines-18.0-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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=ZPwf
-----END PGP SIGNATURE-----