-----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-redmine-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-redmine-18.0-bookworm-amd64.iso
      d6415ee60ac303018842910add66a3414d5bf8c10677d4cd6ce99d45bcb98422  turnkey-redmine-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-redmine-18.0-bookworm-amd64.iso
      04e62e0ac5364f85ba17e84a88175352f54a911cc8eeb2bc973d940a437351bdaf0db14840956f6231ed3c260131d095dc29c409e00cc5b243fcc1da7ab759fb  turnkey-redmine-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-redmine-18.0-bookworm-amd64.iso.hash
      turnkey-redmine-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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PqN6iDQz7k/p/zxDxyIRIiXdicldoDUaU3NiGJpXPuL2S5w62f5G1y4r7J/8jG0z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=V4BH
-----END PGP SIGNATURE-----