-----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-8-turnkey-mattermost_14.2-1_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-8-turnkey-mattermost_14.2-1_amd64.tar.gz f9213a6d4f962a388e53566e4cee5948f44e4c356dc0f3292fb3469e2ad94219 debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz $ sha512sum debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz a98df0432edac790f9c08704e347fd83ae662b785e3d04a21e9ccfb297df99d130e75178ca1484c3ae93bb2377d0874a88830a54a60676101532e8557495301d debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz.hash debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz: OK $ sha512sum -c debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz.hash debian-8-turnkey-mattermost_14.2-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZBxkuAAoJEIXCXpWhbrlNsRoH/0I3bRCdFy5q0hUnSmEf5ybL 5lN8Fx3TyOb0GnvQUYOcbBYI2QRN0kIx5NruT+zuLT2eWqDsShvQ4j80Sr07w5sx QKefccc1E2UDzhyHFqBwOtXnAx+rU6PUFTi4druasx33KW3pza15rtazFAovV6cQ 6JWOsJ6lDAPZU4becSnXQa6sh2/z5GLNghKmNZ5SKSIhDpusTTykKBV91N4oktkd 5tftjN/GQ6ytIdL1B+VzMYGwgzfI7LkIY0RoEST1ctnfRRJOebMfK2d6Gg5r8BAS m02xApKvAIgBf/9y3/GCwI9alUnk8kIvK7vRYZgW3MaByki3YBQZbEv/pZZ87cQ= =IUox -----END PGP SIGNATURE-----