-----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 debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz.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 debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz c9b596719e12450f3fd9bd17acd1c25cde70ebe5b1f1e1a9a8fe045e3abc53e3 debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz $ sha512sum debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz 50516e48123ab8d6850e7e0700c183de8096c205b1c3968101624e72da968bfa073497ca99de6444b8dde8aefa68809e88d863dfce0ce3f6e8d08e7191a7fe22 debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz.hash debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz.hash debian-9-turnkey-fileserver_15.0-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITOkACgkQhcJelaFu uU2p3Af/aE7NfdlNNwoiXqrocX99EqsrX49sXdbBpeXXIHulS0w5b9slBSEmvCQn Lwjjr2N5fmOMfDS/7TD63MLjw8nlf87DKuWtJSuRplMROXpk0jSZoQ4fo0PgJJZi G9sx5cquTBWzao5+nL0Nsyh0MShJPECqGpMrzQOYHr1sO5GCANBj6O3hK5IivAaP A5x58azew2iKNi8boL6M6chGLJjqimij88kXm2su5MpHjvWJ7xmb95PJKsP5E6Pj 0slLCsZd0/i3JUktgam942WkXIHHJAdXmHQ/5TLG4UHmg7P/nYFbFNvdTt5Uqwg5 Fa5ZUnsUKsBPKVr9aoqHeTu35y32oQ== =h0jP -----END PGP SIGNATURE-----