-----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-joomla3-15.5-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-joomla3-15.5-stretch-amd64.iso 1112e6fe03c1ba818f901447d8c079f63acc17ccc6b42a8ac6b53844912584ec turnkey-joomla3-15.5-stretch-amd64.iso $ sha512sum turnkey-joomla3-15.5-stretch-amd64.iso 036252f51cd5086d887c95a8aad11ad7b1eb660be5b40fa51b5c95157023298a132cc9dabb9ed04d257666ba4dc04f5dbef45f6a0764189f4e16138d9458bfab turnkey-joomla3-15.5-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-joomla3-15.5-stretch-amd64.iso.hash turnkey-joomla3-15.5-stretch-amd64.iso: OK $ sha512sum -c turnkey-joomla3-15.5-stretch-amd64.iso.hash turnkey-joomla3-15.5-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAl0TG/8ACgkQhcJelaFu uU11+AgAyn+J+DUj7uJiuf4twjfkIR/8IYxuftN4XnWpz5fyb8fB3lfdCv5Ke/5v L6IyPmUBZRmO8oehsDPd+emV/F0MFAJdq7boodCENgLkQr27O6uO9eJSPl6jz+3j 3rXn4HaS+/WDOhMSaqEhthtlUmMnGd57r0U1xg3GS1dWUD0r8bE7YYz/vhFClkCH wa7TGnF9ELlHka1DF0omH/YM15RSktSzXMPdBwAwn0jbgG4l5N7TCmuqpRLfIqeF vQRHmeHYIE2/SqFO0waqMBzVeUkTn11eFdH9XfWRUdC5BsdT6WXOPtC9reudbfVN cESUkUYWiAYMdG7UZac7LFDIjBbfQQ== =JJy5 -----END PGP SIGNATURE-----