-----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-typo3-18.0-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-typo3-18.0-bookworm-amd64.iso
      b0cd93d5881b4ff15634a07e01909791e276fd40ae663243065cb56aedced5c6  turnkey-typo3-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-typo3-18.0-bookworm-amd64.iso
      4a66a47c8beb6c7bc7386b53fb2b1d6ef913d42e5f66d83c3081e543bd2a241d2e15e13cf63706f801002d2f44c20fa132149e8f45b86709c6f9176700a8f11f  turnkey-typo3-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-typo3-18.0-bookworm-amd64.iso.hash
      turnkey-typo3-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-typo3-18.0-bookworm-amd64.iso.hash
      turnkey-typo3-18.0-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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3jfF0A/+P2yOv1i4euMP6a5w+oQPOHKSRGy2RF3pFTXx5zzO/I87y7LV9egX6mAL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=pAmr
-----END PGP SIGNATURE-----