-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 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://keybase.io/turnkeylinux/pgp_keys.asc | gpg --import $ gpg --list-keys --with-fingerprint release@turnkeylinux.com pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] Key fingerprint = 694C FF26 795A 29BA E07B 4EB5 85C2 5E95 A16E B94D uid Turnkey Linux Release Key $ gpg --verify turnkey-drupal8-15.4-stretch-amd64.iso.hash gpg: Signature made using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key " For extra credit you can validate the key's authenticity at: https://keybase.io/turnkeylinux 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-drupal8-15.4-stretch-amd64.iso 1d925286e6d2a98c5c9c1e6a10e040e51c70be9e3e18eb062b298d6e9d23bf03 turnkey-drupal8-15.4-stretch-amd64.iso $ sha512sum turnkey-drupal8-15.4-stretch-amd64.iso 9040b521fd85f0188629f27ac046fdbbb4f4677129a124beab83d8c590738a0fab156386504508fcc1486cbc337ff1cdd8fa378db5297f1e5efb8fb5f5c2f6f0 turnkey-drupal8-15.4-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal8-15.4-stretch-amd64.iso.hash turnkey-drupal8-15.4-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal8-15.4-stretch-amd64.iso.hash turnkey-drupal8-15.4-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlxhNvwACgkQhcJelaFu uU15hggAxjSub41Rpg92nQK5+xvahhwCKYo7Uc7C3bxQIvbi1x33GzWkIHMrXauH p+me+WLu9BL+gm0gnMLHTiR3/2JzJoH9xCzArLQgQFY+S8gbAsXFrDZ1ba15vYWB zuPXC3W48GkEHUAy8KJQ/eSV+P9IEvaJ7RBgQqO2jTFB/4HK94LzkzxhzmsbYDNk WOfRQE5MVKE9y11jOfBVrcHt0JyeFW2Thg+3aPmQzsxet6DkqXoCoFl+JUox/GXa FyPCbHeJsB9ITM9oYlRFtDo98p92/yNHsZ9xqBeJzJd+KdylwMh+8Cm097H1ui/H NbeSJxMxk3Bh4jRYezSU5Ho8ts1rVA== =M9sr -----END PGP SIGNATURE-----