-----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-limesurvey-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-limesurvey-18.0-bookworm-amd64.iso
      03ea10dc490e77764a017058a89f73cb6f5e31ff41202dbbd866c3b3643927ab  turnkey-limesurvey-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-limesurvey-18.0-bookworm-amd64.iso
      be5a6395ed1baf296058527814e025593aac6e91be505334666f5b73594a4c367808fd3b72a6e95b033b4b4db52445b8138e9219666e7f25679a8dc92bb23b42  turnkey-limesurvey-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-limesurvey-18.0-bookworm-amd64.iso.hash
      turnkey-limesurvey-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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NtUesmPmmN98nnD4d0Zscqs0g/yFWOvC0R192LooGcQftEzohng6RlDG8mh2zb19
GwAWSQN1OnSGTF2cJrb83OO9AcA8TDZBvPyHzw0DONKgltp8RgeDoWglHU4LvANz
Z4UeC+CjONdUlbXZSvTNXOX1daVxR+PyAXg8zcg1CrCim/5om7aEuBJkiC9LDmRU
Zk6ABpQF4lmJz66BQdylgg65FkRWPRTcgrx9eqgmaG0y3gaeEZwpHe/pbgr4I9fB
M1aG4Kg+ScKUuu2x4uWo/BTGorEZcj16FmOJLb4rh9lfSp1QQB+CCa/v7w69X4iD
pF9EU7S0huEDV0h8/AWiGi/EbgAiezADOnTNnA8ky1RNVSR51DckoVcC5+7VXoci
EorzsH1KUiesepc64sDiTFJHGckafTD2ddW+8V4gE2AcafXGEWw=
=O/jR
-----END PGP SIGNATURE-----