-----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-rails-14.2-jessie-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-rails-14.2-jessie-amd64.iso 711904c0e99edb19b8a5600a04725c8f2cf82ec8702e3af3db9ae567aeb7beb4 turnkey-rails-14.2-jessie-amd64.iso $ sha512sum turnkey-rails-14.2-jessie-amd64.iso 8b3576f431dede22e426b6edbca3621d968a9b8fd2118726e25d6eac57ead9b7abb6e8f0658919d477656fe1cc7af282e687253b44ad32f3e3d17972b7db8e6f turnkey-rails-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-rails-14.2-jessie-amd64.iso.hash turnkey-rails-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-rails-14.2-jessie-amd64.iso.hash turnkey-rails-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZVQkpAAoJEIXCXpWhbrlN7iMIAOM3bBgsQpDig723C75Rre9r 79bOIEMTGeUvfqYPE1mBGuhYxrNovjy9Cf1Og99IzfZ2kYX/NvJNQsHuzTcJNS0M RADK16p+3hcTMYdlEBjhExKi57eZvdL4/hUw+KE20mosEHI3sCuYxVNiShXO8wX4 LZtktM4X+7DhsTtBNE1Oj8yMhYiR3rPPXke/SrUkAALIbEVdB035JDReEsicg93l efWfb1A2tJPLfA4E2KrBSwkFdnwM7M9Wa5HLyabTEre1qxqrNS2BfTmXv4UbT+rC yg+55SZRGpptrIBj/FmO8ocGsorV20v2dd/8a03edXM+12oRQuhYXxCR4VWcGf8= =wkKc -----END PGP SIGNATURE-----