-----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-jenkins_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-jenkins_15.1-1_amd64.tar.gz 93f6d468e3c8955adba2e5ad3ac35f34d467d2d84af7a4cefa53354481f737c4 debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz 7fe582b93e84a07ec69efb9105639308fb1536301685a15119f7196fa35b3a635f12711a8ca61acc6566cb62fd870da415def29f26a130d06202fb72f5497ec4 debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz.hash debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz.hash debian-9-turnkey-jenkins_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITOoACgkQhcJelaFu uU326wgAsISpOxLHo02/UGYcotmGKIb9B7g6MkpOKoudBFvVjijfLolcnHjt9zlX uApFonTEPgvQI8jq9HRJkjPqikVCqIpFxtgNePUAucBAdf/UnMIosicuHkCHPhQm j/N8M1Pqaxl6xme4lsXgVdImRJ2CNqEoGqAoCg1qt94PG+ujXyZXZwqlVIjg212Q npxsBjRYrCpDnZgFBiZI2ZPh54XYmzbyCNxr+b/EVXykPy5Ecymo4o6DQv3+qjXM zJNbOV3eSmKd6h/awuOLyDqddardIda1Lq7Rjflt7TkSgL7NW75mGE6WPFnzoABg 3x40XGA1kn7+P2YT0TXR7FbH/9YQcA== =Be1s -----END PGP SIGNATURE-----