-----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-joomla3-15.0-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-joomla3-15.0-stretch-amd64.iso 6884314b9eca638e626002a51bd84ae64d5a8bef6af6c69318fd02c58539b871 turnkey-joomla3-15.0-stretch-amd64.iso $ sha512sum turnkey-joomla3-15.0-stretch-amd64.iso ecddae32932f4691f7f43b259c619dd6340591d0c99eed8b532a5509f6b0355e25965c1d82a0681c87541b4686c493a81668e267d8713d4d6c2133c4590741d2 turnkey-joomla3-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-joomla3-15.0-stretch-amd64.iso.hash turnkey-joomla3-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-joomla3-15.0-stretch-amd64.iso.hash turnkey-joomla3-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlToACgkQhcJelaFu uU2VgQgAwljzsBFYjg+JaiWFpk7a0679fM9WQDCnC1Ow8FonuJ+Q8nOpmDQeLLGD s1oZA0uo5rJhizVN8aoLaib1yw5SEdsQyQeL2B9rkh2WGenEYepE4CXVGsiaRuhX A9X2NLlUUy5hmoHvWtpQrXJP7nZXyET9XjjWt89tXb/r+MFtBhF8XK44Zc/xRaLG PfemokHo41ag9esLggUqzpxtWhByiTA0YipsYECJRqYB9O0HFgD3oOf4XQAtSsif AhuC0fNamSpj8QJ1xzgiT9ADYf9PZrVGWU283AWH+7mLp0xn/RazxIue2B+kUyx1 SlfL9vOD56gIjUftKmgViOffjsjDog== =KE63 -----END PGP SIGNATURE-----