-----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-mattermost-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-mattermost-16.0-buster-amd64.iso 2b059b3f02b650c60739f30742f4fd66841f8b4e73d4638b6057daf33296f252 turnkey-mattermost-16.0-buster-amd64.iso $ sha512sum turnkey-mattermost-16.0-buster-amd64.iso 82feb81f78fc2e945be89d56a513e662cf93e624789e3799a1230361c5206d34c2382520629448e286772d83fe32bf57ea1cf48393b422e61f84d96f3ba7d4a3 turnkey-mattermost-16.0-buster-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mattermost-16.0-buster-amd64.iso.hash turnkey-mattermost-16.0-buster-amd64.iso: OK $ sha512sum -c turnkey-mattermost-16.0-buster-amd64.iso.hash turnkey-mattermost-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----- iQIzBAEBCgAdFiEE8ZCki1TcVrLH8k3LrF6wBJPlvBwFAl7KTbYACgkQrF6wBJPl vBzYGg/8C48gXLfGZqY/LzJx0yR9oGSichH706MOpbBSKP0HcM0oDsC3sU8JMZKB viqEij6qHr7I6AFbv/hNVjJexZPauV+ih8dxKnDsB065r/q7MbVHU1TN1O5qFaAz f1aU5+zc76be+7biGH3mmd3yztYurYhx5Rkh29BMT5ZunUPp14zEpKhYjXKoZamP vXiG8R86qQPu3FXDPdFoneo7mmQZCSg/Y+I6bbOj0PTN4AZZNhNgmjMidTXEw5Mk TnsXQ06t2LZ/RSIV/quIHfw4fDsIdpwwpmhl/LBg3vkZ2cqHadi3X/gqzqla6WNa Z1fiu2AS1PgVVJUkt1yDYl5xddLi/v82OWhNGzVxuaUm5ODMrggfsKqEqK7rolj5 phDNw/TZpvSm7+euDl4z5rBGe9JyAM0k7nGVYi5LK4+QvsDpuZ0VXNecFyibI+AH 79BhKXUIgK931RFtFOpbq0n1I7w05tJ9wHO5vdTAVTs22vZBM2UdMullIH/SksNO wRzLWwpgNDTTMk+QBkTKkfriu1TMhFomV4h8JnrdgCOvnXNYyK2FdJQgvmZg+Ri0 vWdc1G+qKy515GrN3GZKNwU6gWoeh2dGBeHxOXHResXQbP9kbRGTybQ74uceQ4A+ xaJ1lAhVxniY9WjxXLKVbZ0Q/qkTm0ZunspMlXOQfoJqdPe08Hs= =94EC -----END PGP SIGNATURE-----