-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 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://raw.githubusercontent.com/turnkeylinux/common/master/keys/tkl-buster-images.asc | gpg --import $ gpg --list-keys --with-fingerprint release-buster-images@turnkeylinux.org pub rsa4096 2020-02-05 [SC] [expires: 2040-01-31] A8B2 EF42 8781 9B03 D351 6CCA 7623 1C20 425E 9772 uid [ unknown] TurnKey GNU/Linux Buster Images (GPG signing key for TurnKey Linux Buster Images) sub rsa4096 2020-02-05 [S] [expires: 2040-01-31] $ gpg --verify turnkey-fileserver-16.0-buster-amd64.iso.hash gpg: Signature made using RSA key ID A8B2EF4287819B03D3516CCA76231C20425E9772 gpg: Good signature from "0" 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-fileserver-16.0-buster-amd64.iso 421e49e94ee8fd45487b9e8123b71db6e2fcaea810e6e30716f9208bcc4c7749 turnkey-fileserver-16.0-buster-amd64.iso $ sha512sum turnkey-fileserver-16.0-buster-amd64.iso 21911a697f0885579d6de9d4eaf8be6999ef94bc35bd5b883c61589b4855bd6f8a36a0de5c3a1b1615f84c3ee97cf90a7782f84c69b50966e6b11c620f22b8a8 turnkey-fileserver-16.0-buster-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-fileserver-16.0-buster-amd64.iso.hash turnkey-fileserver-16.0-buster-amd64.iso: OK $ sha512sum -c turnkey-fileserver-16.0-buster-amd64.iso.hash turnkey-fileserver-16.0-buster-amd64.iso: OK Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE8ZCki1TcVrLH8k3LrF6wBJPlvBwFAl8UCgEACgkQrF6wBJPl vByerhAAnl8OpNc2mnvkukGR8BBg4mE4wqHg6P6JCfDv7kcEpReDcBZO/DoYfHoV /vQc3wvYSbDKVMwRLsqPj1ARJWfFvTq/00NSx/vNgJ/28pVrI1IZ9BNoP5YOdXfO cTCIzNNjymKMcFyLmt3yMTRkari0gXVXVgjnErWSFdt6pacBmkEOQvgfQW1VovMK bMeIBqZ+P4G70jJGmeREA+PCvQX0iqChdr87G3+yx7CuiO8NUso4IxaJdw6tR5af lHbyXQGixiFpg4S2ZVuud3wASj5oqp0+I1X0KAfU0Rhpeu4845YTWOidF80IBYBM OGzEPqvwYdJ4wWu2PlpPjf6Is0wQfMR218QfdkzhJAX5b5yB/jO4kglma5SDpcMQ gOUJRqcnsnFNr4hQFoeeDp1JDAOb0RCjYZY7fBdle872kRHuRmAuL7clYzTFOtYJ +PEyzFS+vJiCpU6f8b38YsT6WDK2Jjsfe/6kjB/MmMXx0CNPnKtQ2d6CQdfmQzUa 0rpHzxKK3LKBRClzXUZYlt2OYUdXv89lgr+UtSY5TtaX9Cb7MgTrtaySAUmvzo3E RU2VuE3yHgr4Wxaq71X/CS18fc3e9tbv/eI/U7HfybkpIxIbdqULYFYEG0ZHnJye +aSD8uew0vHzXKOg4Dt4xdiihXa6LDedZsmxvay3XlbyzC8PVGA= =nQON -----END PGP SIGNATURE-----