-----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-roundup-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-roundup-15.0-stretch-amd64.iso c49710771eec01f85f6b0b8fb874f9e5e8b78cec96202d83a403a70f5fb78b38 turnkey-roundup-15.0-stretch-amd64.iso $ sha512sum turnkey-roundup-15.0-stretch-amd64.iso 56c9d9030c21ad890b236a681ed0d74eab5a60463b1734d7833c4974df846833bf260fd486e675657137c28d32c076f0b388e7d0b21f7278fd2e07b56ef3f740 turnkey-roundup-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-roundup-15.0-stretch-amd64.iso.hash turnkey-roundup-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-roundup-15.0-stretch-amd64.iso.hash turnkey-roundup-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlT0ACgkQhcJelaFu uU1K/wgAmhnPLUANPBi1kDewVGqbFO9Frtnlt2nInZ9lFnMCuFkX6gN80FoeiWoP 6nVZA0sM799jCXeX6027TPLA0kV/onpOJSJKjizaWMt4CEnrPLdSGK4MvdV1nW9X PftJ2bZl3scd5cu626QtcFeu/TbLL6VXCGWmjRJwcCcUX9gd8RBY5XxdUiwnmJye CoVSeljvDR0zbRrHvG4HVSZ+h9z9LL7NgpLqlCD/DAWbHrBXFVmC9TgJyIM3qeEo 6VHjBUFtQpcqrmR/FpjzIFH7fdLNgD6o9deyyZqNfWxDMCLPY6zEcmb94EhcB+3/ C5rXg7uaMkXfOo12tVWdUNtzAkgTiQ== =BUgW -----END PGP SIGNATURE-----