-----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-web2py-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-web2py-18.0-bookworm-amd64.iso
      c5312b44972a9d83b65a54bf0960e93a670de569860ce4a427eb616afdd5c760  turnkey-web2py-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-web2py-18.0-bookworm-amd64.iso
      64bbe1bc09d2cf0552766fe84bc37351c0a236174ad3d3062bc9633024bf2a4437661c44a3955bffd3aec869a94861622a62b861761639a4a1e1ba9475e3154c  turnkey-web2py-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-web2py-18.0-bookworm-amd64.iso.hash
      turnkey-web2py-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-web2py-18.0-bookworm-amd64.iso.hash
      turnkey-web2py-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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ltMpucDEKJB2Yu6NVedVeVw5QrGUllfw/c48pLDSOcvWtOyBRSh/mxtJhWgOXqmm
3cdpUv8+Q4sdFI0WkI3EiUvmV7jQUtKq1zBFCnDZOlqMBt5okIht8h3THYAfZ4l1
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-----END PGP SIGNATURE-----