-----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-observium-15.0-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-observium-15.0-stretch-amd64.iso 035bbd3bf284041920a6db3a994229dfd2c665dab6514a37ef4c50d9624131a1 turnkey-observium-15.0-stretch-amd64.iso $ sha512sum turnkey-observium-15.0-stretch-amd64.iso f0c9ef492bc70fcfc916f42ab0720a75d1de0386eaec0bd15dd2baa987ccaa5005e7b659ae736ad2d49cba0c4c4900a45759c20c2984e9201f087752a4b76599 turnkey-observium-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-observium-15.0-stretch-amd64.iso.hash turnkey-observium-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-observium-15.0-stretch-amd64.iso.hash turnkey-observium-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTwACgkQhcJelaFu uU1OkwgA31dl5Q9b5c0vnEYR3qqAV04hXUWqF93xfi0f5Jj9E4J2bge/ghcQAHX4 b9GLb+puebPBcP9UwHV5fs5iMf4R4LzqTHqBzxfOiLfI2B7GucXBkTmhfa/vNTfj FoKvJKCPI+oXfRNyd1/V3KzdOTW9ervKP+a5nt97d/NK20LwZS5VqOhPjWqO2VXE yd29yYncxXBRotl5k3j8VDPZhjft/PB7kuzl/hjcpTZZV4GtKxP7GLTBW+L7EbTN x5qo/9yTGUgZj9YiSNi8l/1xm/XY8zVJNGxFgFIKnu+VowBKkp8rSHKR0c1BQy1P Y4sWeqjTPXkOe6KKRtcGpvZ3V7COOQ== =URTx -----END PGP SIGNATURE-----