-----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  | 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-drupal7-18.0-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-drupal7-18.0-bookworm-amd64.iso
      76aa1d45aa417ec1c9e11e5b10859d3c8d7e297804d30e811e44ed43f935d085  turnkey-drupal7-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-drupal7-18.0-bookworm-amd64.iso
      d39ad6e9b5fda9808ac045802ed974e40ded87dfb85824abb7cf9b858706dc24aea9f750aa71e3e93c197d5e036164373cddb7d45a807ac931f849c9c3658b17  turnkey-drupal7-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-drupal7-18.0-bookworm-amd64.iso.hash
      turnkey-drupal7-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-drupal7-18.0-bookworm-amd64.iso.hash
      turnkey-drupal7-18.0-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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sjGTTkG20TS/CCz6+bM/rbiRojZu/JpmD2ec/q07Uz1gegnM2Y8avnFGvecPovtm
NRa3FJuBp63Wa/ox+S47mmDkdYbbTmVCXrnUVZpaeT6DVUwxHPGp+H9cE6Nk0XGv
g6gdtSg3qUVWftOcae/V1V2zNaNWQEc/uBjBrSyKRnwCKlysiZZZT7MM05ZWzt1c
mND6WHahyiRMXg74vv7B4NSKAzGq+ncFBFNh333enS0/iaw/OnonH0xDcNJNDdwD
TzdNACHelgA1ziNJzo1V+XBPAFXxmRHDiRkXoLiHklpaQsKk29EDgnWBwtN1zBGt
mgEWDBDjMkTn8Rfr2zeDNBZzIsNk5ulSe9Kq8hEyZtlSTEbkemHvDGl00e0aZl8N
HIkKebHbT5r6nytBWVUq+bFyMw8L8+h87oSgs3RHxuku787YPwg=
=crpE
-----END PGP SIGNATURE-----