-----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-tkldev-15.0-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-tkldev-15.0-stretch-amd64.iso 73dbe9bd15d82264679b3e4b3173c0c0121752bf7e44bbe35dacf4cdcca88791 turnkey-tkldev-15.0-stretch-amd64.iso $ sha512sum turnkey-tkldev-15.0-stretch-amd64.iso b7d1f5b6bfe5d8bf6c2e1780d965b3078e3d7cb069fbe795ce33e217e3f251c06e0ce4e3d167dddbb232dcc8db95d195500dd547320d30ac0dbac1c8d0817443 turnkey-tkldev-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-tkldev-15.0-stretch-amd64.iso.hash turnkey-tkldev-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-tkldev-15.0-stretch-amd64.iso.hash turnkey-tkldev-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAls01EIACgkQhcJelaFu uU018wgAjMnBmGOGi381aSPqg4syWXrEaUarlERf4K49D5qDdAFa5/Sly62ifvqF 6dJFRlMmyu47hgbTRalR72iG/fXIX7fWltGahYto7EmsF+kVEQVAjg1ItuQI18tr e3rFOERE3cui3pe5xlVjkZMFQ4wIDCa6WWZ3d6+YLLCws8Tq81xNzT2eSliaQUwb 06DdLjlcEpjSdFklG0BEU7r1+EXkOciLEvKoUnQhaJNxmrC43XDFHJ5FBMi/8Of0 eJqSge7Gzco07I6o/JxZDzDTO2oRhwF49BGPiwBkn7IZzE12x6QtgJ38IBvzJCgv zaE9ITUyiIYSagQ1XtN1TXNeg6oWig== =61IV -----END PGP SIGNATURE-----