-----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 debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz.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 debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz
      52ffcd9a80cdb6f20f8b586ea3bd713036ab2fcb079a842f39b0c05438d48b6e  debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz

    $ sha512sum debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz
      e8e32b3337c666817769ebd5aef294231b656c8a1278dabc205d7b5e5584ae71c85a4eb05b1d642b1325b8f60a9f9b7a50d2d02d14984821ade1f852d7d1eb96  debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz

   Note, you can compare hashes automatically::

    $ sha256sum -c debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz.hash
      debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz: OK

    $ sha512sum -c debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz.hash
      debian-12-turnkey-concrete-cms_18.0-1_amd64.tar.gz: OK

    Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted.

-----BEGIN PGP SIGNATURE-----
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=A6Nk
-----END PGP SIGNATURE-----