-----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 turnkey-canvas-15.3-stretch-amd64.iso.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 turnkey-canvas-15.3-stretch-amd64.iso a66e14b91e8db9c67c821c2ebd42c5d88f5513ad2cb8ea6b443208acc432090d turnkey-canvas-15.3-stretch-amd64.iso $ sha512sum turnkey-canvas-15.3-stretch-amd64.iso 5ca004046b39897803844bbdf5836b3c608f0ec89788c6ca5ff556a330a4a2b7391f3fb59c7c107320e87daedd33ca4a52dfa8c2e53e647f64bb6a6d6bdefcfa turnkey-canvas-15.3-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-canvas-15.3-stretch-amd64.iso.hash turnkey-canvas-15.3-stretch-amd64.iso: OK $ sha512sum -c turnkey-canvas-15.3-stretch-amd64.iso.hash turnkey-canvas-15.3-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAl0TG/0ACgkQhcJelaFu uU1UFAf/erMw1v6FGVPkmSAKXHstdILd+n7J49nUrQ5CPLJI0spesYlh2/ZQzUi5 IByaUhMr/IJdk0Uw8n71956sQ471XKqefNZy+9M6c6gYJ/xiF8vSCGELvXxk7w3f zwOtSLw4TACgMRzrMA7cyQ+kXt4OzsOeKupK9VSN1QdS5TzvS9cZ3YNnaOxYeFo+ c7w0Es731bJTqCqLUNB2oMGj1hrrjAP5F3oBxdPnf1dJRl3NSzMObudUEDE6qvLQ SuB5w+snUqNuyxLdD0uO+nGxocsJSj52cUXHA6BVcyxSUWor9X5esFJqz/qT7wXZ 4iPYGlCbhb+R0Uy2eFIwzp8yP/MStA== =2HxE -----END PGP SIGNATURE-----