-----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-web2py-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-web2py-15.0-stretch-amd64.iso 8e26738347810a7d3e1da16632947bd726d7d3f33efe4d66ebee70e812f74c62 turnkey-web2py-15.0-stretch-amd64.iso $ sha512sum turnkey-web2py-15.0-stretch-amd64.iso 5789beb16b38168c74f0f401ab0fc4409bee1ee3a9dedf9e8bea645f621acc916e30e3e03d8ada5fb5d9379ce0a77770fbe030c599f2430398788ad6d0608a48 turnkey-web2py-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-web2py-15.0-stretch-amd64.iso.hash turnkey-web2py-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-web2py-15.0-stretch-amd64.iso.hash turnkey-web2py-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9T0ACgkQhcJelaFu uU3iggf/fHNVJE9aYc3+A0AutbzUIz5ou5KwDGVz596dFxw9SmItF1Tu4cCu4+jt /PRENg3IimMFtEWPvb3OQww5d0Q3cT5vzwz+dIiPbbbA1pk0+quTihCytclt4fVr hnzKvjYlTin4attkcc9HWlLnVUP/QwOvfYJHSpEnkCztG2jgljASbXGG2RL1SZNK YsgViJIoPr0tz0xoo3d41iaJGe/AP87OJg0mCV/zt1CjErzhlOalQg1bvtF5ibuv tyjLOK1y38HqOJXj6buEh5MkMyuWsVeZFTD2MNNW3AVxXjTtJtHUbqDdYP5eemeW FixwExKDU5g1C5IkpnW3MFU8dkDLuQ== =MOK5 -----END PGP SIGNATURE-----