-----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-rails_15.1-1_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-rails_15.1-1_amd64.tar.gz e8bc90090154d5167715ac0fd5c728824bfc1d9a92d3432ca74597dbb5b9b96c debian-9-turnkey-rails_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-rails_15.1-1_amd64.tar.gz 685d31659f8216d98ef8d6d6c3a31d028952b201407f6db8a1b5c1f6800f55e2dbf82f564cd537a16e64f1b4fedc513579d56813d18f11a103985beb7aa894af debian-9-turnkey-rails_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-rails_15.1-1_amd64.tar.gz.hash debian-9-turnkey-rails_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-rails_15.1-1_amd64.tar.gz.hash debian-9-turnkey-rails_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phIACgkQhcJelaFu uU2GrAf9EspdaSrayDyxANXKhM0yoryYbfOeFU0R3YjWm4x0oVmGpehGiNpOCAlZ 2lqOnq0DTabWJu/EsTdI0HhPM9Sneno4y4s6V2fnQLgel4D2QublzKXq8mISkNVn MYbBVFdKll/J+F4RUpBbKssTSOCP7WPPc257HROXxTK17Xup7L8TOUh2GtcJ/fzz NTqknOb0NguZkzve6eK8rDkV6hLD92Ve3clfnJHCw43Kdvmsuk6biqNPtQfKYcEK qWgNXE+TRtE5KKs91XU7g9RiYQl6H5VU+1H+lXXNkD3PLSmzkKsdS1le1EQftxq3 NHICkxNh/uyPxJG1cc1cMAtKZBb8ng== =50bD -----END PGP SIGNATURE-----