-----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-drupal8-15.1-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-drupal8-15.1-stretch-amd64.iso 41816b3f0eaea27424f80d95a60b324d89ab21983f51089b07aa839eb4b882f8 turnkey-drupal8-15.1-stretch-amd64.iso $ sha512sum turnkey-drupal8-15.1-stretch-amd64.iso dace1b7c83c82ca658fb77600f0ee625cd8daeb5662ad29d4644d73100fd8e827bcbf4a8ada63298d2b5f0418e1d8d6a8447a339e950add45ec098a8dda06051 turnkey-drupal8-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal8-15.1-stretch-amd64.iso.hash turnkey-drupal8-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal8-15.1-stretch-amd64.iso.hash turnkey-drupal8-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TkACgkQhcJelaFu uU0TLAf/XFXaIQDuDfwDVrBZ7Wf0nmpK3qIHH7f1uGisC7XCZt4PVPQoykRMeg+Y ijBeyH7YlZr7R+VP9BU/d78ZyzUvbHVxv4IfFSuYqD2ft9CggdUE3js8bR8w8ZkJ xOPZhNRc2+MnJJz+YDspRBd/S8+Yx2z5ioa6HsQeA44ghlgm5Hgrd/vA7bu16HSJ sdj3K2cAHSVM9knFjf9TAOTEkvknJb2uPorbz8CRW9tvyMhIBBf6S7xm0AV4NHkL NA5z8jQgfXDmWs7lTKYZHa6mIkBUHEGpa3+YvmmTsazwBQ3UFQjVRvhumj+UdFj4 5OUTFOydTRwLc/jFQH0QPArA3UU6yQ== =Xo6x -----END PGP SIGNATURE-----