-----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-mumble-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-mumble-18.0-bookworm-amd64.iso
      1ff817efe894e472fc0c80aa74ea258ef3c472b1be1caa49dd3cb72572071fc3  turnkey-mumble-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-mumble-18.0-bookworm-amd64.iso
      73d6e45d1df9e2bff8e14c52346f50581513f700b3ca7da9241d31ea7c95c409804c6c86ec366031b67f999a7c10376f35d4ffed1481c3a17c07587f6f414726  turnkey-mumble-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-mumble-18.0-bookworm-amd64.iso.hash
      turnkey-mumble-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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fNw+HMz2yoeYfGOJhP5ORhEPPbo3jvfXr3BTegD+VPO0fVPajgxZItiTfVdUHODA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=YzxS
-----END PGP SIGNATURE-----