-----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-ghost_15.3-1_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-ghost_15.3-1_amd64.tar.gz 93806107c01507d9dfa0de1596af949f4843c2ad45dcdf53e7d54ece9f1a9e21 debian-9-turnkey-ghost_15.3-1_amd64.tar.gz $ sha512sum debian-9-turnkey-ghost_15.3-1_amd64.tar.gz 22d6fc67d381de8005d37951329b8bf81d8ff085790492cca10cff277cfef286e7d16483e47f1cf97bf326bc6d3dc503d7af20d094c1270416186b32de33c7a3 debian-9-turnkey-ghost_15.3-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-ghost_15.3-1_amd64.tar.gz.hash debian-9-turnkey-ghost_15.3-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-ghost_15.3-1_amd64.tar.gz.hash debian-9-turnkey-ghost_15.3-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAl0TG/sACgkQhcJelaFu uU0UnAgA2c8VwF2RF7v0cXTWdnr7icU6CgquaKhwosGwhSFwJqM2krpPKfCVjs1x 0ef5suqo0phZWC9x+GyOmYQklNOwZb6VlzDIwZRLzuAgS56g4KDw3UVsEXTKvM8g vtj18gxynikpcu2g5Lq0TlhqW5Ep/ukUQFo28V7wLccgiSKvZOdSurSyxWjpUaLH wE1tRBHrdw6kZUXxTCUE+tgpeMSHwMcjDtHd49icv3nkJZosQNr8sGwIO6TuMoZn tH4LNzEMzAkuYIJ9IwX+6hQvD8IxsyxLxQN7gOrtrYunNUSYjxrwm/4pc1PyQrZI mXTiNmHllpgIgeNcfPDSdrn4N8QMgQ== =sz3J -----END PGP SIGNATURE-----