-----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-drupal7-15.0-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-drupal7-15.0-stretch-amd64.iso 8cc32ef28509fc7eb1070ed90c0d63ce934937b1859f4ed2982522d928fac387 turnkey-drupal7-15.0-stretch-amd64.iso $ sha512sum turnkey-drupal7-15.0-stretch-amd64.iso 95ebfecdb20a258e311eb5b3689382af7eb012c6de9349f1ff9381409b4a5a37b0090f6dbc130661ae9e6591b814cead5a5595bd0e2d0c8bb75701b3422a86c5 turnkey-drupal7-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal7-15.0-stretch-amd64.iso.hash turnkey-drupal7-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal7-15.0-stretch-amd64.iso.hash turnkey-drupal7-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTkACgkQhcJelaFu uU1yswgAxuClsYJgyzRKX5Ga6x3IDUR3yqIb4ux3UueRTuG1xIICAWqvbXCKM0c/ oJ+jy7+SlS5QYSiWEH6+1yzkoWBUwZP45wTL/aR1SPJejihL5sErDwPSs6wp+HEB owjytSzn7WZzfnt1qlKsovyW5b8qQgRopTAZyLrihYBmQiLdRjx56/raLbUplXlN pOypbHzv5fQL9l+1h0sckfTpaDmpzyO7H6v91LMdMAmyq79SPI75SNVE3GWIxT8H udPJNNfxMICWgHHIx5VJp1LFR/kOtDpYhLaMGG6Jxg8LzgOcDkfPsCVnkWpXPyHF I9S5wtSjWQrnnPEdhKIbX+MA2lHqKg== =R9UK -----END PGP SIGNATURE-----