-----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-roundup-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-roundup-18.0-bookworm-amd64.iso
      a0cc312589aef508ed47ce84877b8e838cfa8a863be9c291188f691b9856686d  turnkey-roundup-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-roundup-18.0-bookworm-amd64.iso
      d6a9eae6359accb72e8f60028f58f6001a58b007569ad9f778603ba2d90e9a35db2aeee5d8e30962b6c2e14caa5579c4c7f9943e5ee2c01fd8a678ed74e26613  turnkey-roundup-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

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

    $ sha512sum -c turnkey-roundup-18.0-bookworm-amd64.iso.hash
      turnkey-roundup-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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YJY1+6llxWANp7XFIGy0oqB6xaHUG+b9yu2ue0k6HkftYUU8GK2Us96PYvKfFn1Z
ukFXcIU8IQ/vJPpXMOz2vY8xX6jaGLqBb1X0dJ0Yz9/Fy5jtFEmwog8Nu46oqh2t
ipsKbMnPNNwSKgnoW+Nz6j/gYkO2w63kH9GiwNdOuPoK/aOZ7SoITG04Ve/tx6id
qs2xGO+dwaHx2Vlr/uPcaNhjWmhRjeik6O5wcvk3WY1rMs7lKg7dJ0v2wOUAFwqI
pwUc2FL9POXX4Xtsu5bmT8JtMJs5ouAGdhOTNDbDp08sZEQ+lSq6mrfiBfl4Nspb
ldPiWz7eeOMij0sax0tHuNL2d2zFdpyoeKORr9QzqxGhfTWDtSo=
=wYpn
-----END PGP SIGNATURE-----