-----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-observium_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-observium_15.1-1_amd64.tar.gz 93ecb856e7bb0d23abf340e9c7ebd094179939ceee8638ebf6dc46326c54b671 debian-9-turnkey-observium_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-observium_15.1-1_amd64.tar.gz f35e5c24c8ee48bd09cad84f81bd97b14138723847c64cc1729d379864e3ea7b5015e571aab20163b6998cf6410ce2390b526ccf9e6d61002a29d9e63d5ca74e debian-9-turnkey-observium_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-observium_15.1-1_amd64.tar.gz.hash debian-9-turnkey-observium_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-observium_15.1-1_amd64.tar.gz.hash debian-9-turnkey-observium_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phEACgkQhcJelaFu uU2xagf+JLt7DNkDGFlBL43IVjyDs3lXVuyhczYBwIPJbXKa0t2h6NJRTHBMttaR xBPr5huGam1nJtgkIDDIeL0MKM/RTYGMfE4IHYpp2PjD7ZrlByQqvEKnVLj43nzf SY3cGlpoy/ipfNWjo9R2RJdOMuk1oLB/XjyYTnk1DGx9xokhuEguJvuf1E5p7gZQ 6Uk8zVlRv3q5ukJ9z7GL6URwTQnpuOMq+SaAQcpZlthtWq9zR46YlQd5slq7tZv3 +6DVXWDJRqoAl3G11TT7Mg4V5BpENMn+GG2EtrDmmoJZE1j3Yp6Cgoq1R09LuimQ dVY18z7f3oBTIVcKoyuW38zF5M8oxg== =JYva -----END PGP SIGNATURE-----