-----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-drupal7-15.1-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-drupal7-15.1-stretch-amd64.iso 7b523a7e502027efc85215a8b0c014b4e549b35520c34de462819059016a64b5 turnkey-drupal7-15.1-stretch-amd64.iso $ sha512sum turnkey-drupal7-15.1-stretch-amd64.iso 51b9b9012d3ecf444cdb1b1cbacc2a809c994a485530ee97a38f9c7b206a0f61451fe670bac5061ab49dc79ca57e693b4799541adc592c2e03699f50a9e44240 turnkey-drupal7-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-drupal7-15.1-stretch-amd64.iso.hash turnkey-drupal7-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-drupal7-15.1-stretch-amd64.iso.hash turnkey-drupal7-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITO8ACgkQhcJelaFu uU0dSQgAhnthDULFqbPH2HHpzj4N6C4FxzsqS1cXXfMA+b03uyWXVryWNdeul3TY m8cb1S++PHrKzHn1GimN8VA5i7RkN7GuNYXYniiLj3sqqyjpgfS9ln1IfnGs29cu n5lTz0DhqfWDF/tB14zHvK8sOBnj+U5aNO87l3Nf9FPRvC7E0qbwQKVUbxvQPPcF tLC4pL3cVfZLU0xibSy4ud4uwUL2n/YvaDwIDH5W1ArMinr2ywDGoI4Ojp5ITk7p 7/BG084cyE0W5eL81ehrjqtZLa20OihoyzR0w8uKPWupEABys/ImydWoFmsFi0UX rql0qNBtBz3KAQNcfpZh4gpYWgkltw== =lfgq -----END PGP SIGNATURE-----