-----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-drupal8-15.5-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-drupal8-15.5-stretch-amd64.iso a020906aeef1f70d58e98c966706aba14cdca2048ddeed44ba0f8dda245fa6a2 turnkey-drupal8-15.5-stretch-amd64.iso $ sha512sum turnkey-drupal8-15.5-stretch-amd64.iso a73cfc1be4f0dc9e306a5bb76eff6137efda50cb8533b68411c9e2a4ee4cb8f5574d04ef3e33f9db3b64e6ddcad2aaacddd6663a90e62ef466ee6deb259af407 turnkey-drupal8-15.5-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal8-15.5-stretch-amd64.iso.hash turnkey-drupal8-15.5-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal8-15.5-stretch-amd64.iso.hash turnkey-drupal8-15.5-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlyZ3PkACgkQhcJelaFu uU1u0gf/SXrntFTp96Bd/5rFkr1iJcs1zQtUjCwD7NZd7mmX32Pzt/GL049t3HS3 2DeKM7ZHPOZiPhsaSrOtEPn6Eo5AwEoIhSDt4e9qAHQVwwqMyilqg6uzDepnTwBC sbBM7lWucIoVInikQuh4DmWHvHZ31E3QbB+j0Xvc63rwZmxOOTQq1D+g89s4+oRo hkNo5YQ0jhKISJlFKhYI5cZpjfH4ZcqzZ3KWznnZrzG3coZ53QBAAMTACXBXlYsH DWfOUTLKouEzj6NKJ8GS5EPtDpcQ4/GNgakClkD9j3MmQ689QHHO0uUpUFUE45Ag gZRXgUr8CVdLlqIDaaxbGpWb1nw2JA== =2lcP -----END PGP SIGNATURE-----