-----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-drupal7-15.2-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-drupal7-15.2-stretch-amd64.iso 2a79e7fa838c9348165cf3c3218b5d1f1d59af5503bab7d081e7882c4dbfe573 turnkey-drupal7-15.2-stretch-amd64.iso $ sha512sum turnkey-drupal7-15.2-stretch-amd64.iso e5a632feb00b4c8079d9604dd7551bb6229d8e1df848ca17eba506d53aadc37a55b948f5a4f0391302458dc3f18f4be0040679c92726ddeaa63660379bebc0da turnkey-drupal7-15.2-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal7-15.2-stretch-amd64.iso.hash turnkey-drupal7-15.2-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal7-15.2-stretch-amd64.iso.hash turnkey-drupal7-15.2-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phsACgkQhcJelaFu uU1itgf/Yy6sEkLRkFMLnMElLDasSHCNXKdpYGvFpY46ERbQa0SPR8qBlHXR6Rk2 ysWcBa9zk1yBYZSZPc+gRfsAjfHV8VI75B/mMjYV9UXv1DHk/jvSUGMakrh3jeex 9G7+EJfl8IuEkg3VIoKrg7DOgRhNhJQS54fexXBTDIgx/nv29myj5kvLNfeWaiuv /c2Th6eDKYCdFVDh/KLk95SAdtcYuxNso0MGLp0iGWhgPDdMzVwMXWWwDl3Diii7 LxiWzbj2kyZqIrOx0/BNp3wQgoyCsAsgPLGWDBezJxcIPY3FPLa1FHoDfC8TKgQB woyUJvYZPk+QuLC/4uhKRdE5EIaktw== =FJjQ -----END PGP SIGNATURE-----