-----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-drupal8-15.3-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-drupal8-15.3-stretch-amd64.iso efe1cb9dca9d72a4cb2fe08e1d9d851e84773314379cf9489c8a55afc486532d turnkey-drupal8-15.3-stretch-amd64.iso $ sha512sum turnkey-drupal8-15.3-stretch-amd64.iso 82592ed1ea5048474bfdeedf1d66040e005b2c4de7c5bd3972a7e2e06814c42b573c2eab3da8ef71ef7bd52a24bdf2da2443af5604a333e62fc3f1dc40f6d5e6 turnkey-drupal8-15.3-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal8-15.3-stretch-amd64.iso.hash turnkey-drupal8-15.3-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal8-15.3-stretch-amd64.iso.hash turnkey-drupal8-15.3-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phsACgkQhcJelaFu uU1p+Qf9Fn+6JcADEnSoUGWrpxuVU2Ep4DIrqrC+IkbYsnYQ58pHB3CZHJdZTZU1 uGmBXNDIxN9IOMxF2s9g6Q+6C3Qc9wmOlDv/ukKLN0B6rDZJ0K1cmhHJrRvh+4qd hDoh+9kAbf0NL1T9IfN2VEuSD8NJp7eMqGR03H5B33K6FAEXEfjQ9e06uZrikjSB vUp3+/LeY4oym9mVXPYbWw49T3i6GaUDiU+mg4rMrHer0F3MfNSoBSN9Fac0HZJa aQhFd1JS4Eyz2Nl3/Ct5obIkv+JRGWPHPZd3YYb/ggq+Ugbfok6G6jyV1sbV0af2 Ay5OCDtlb82oGWwKcPNiUS+VnuNcuQ== =Idlb -----END PGP SIGNATURE-----